NIM/ECOR/M1 - Missing data

Data are missing and unrecoverable.

• lon(lon)
• rotated covariance vt(cvar_rot_vt)
• 0=real or 1=dummy value of lv(real_lv)
• 0=real or 1=dummy value of rho(real_rho)
• variance of v(var_rot_v)
• h(h)
• momentum flux (dynamic)(k)
• rotated covariance vq(cvar_rot_vq)
• variance of w(var_rot_w)
• skewness of variable u(skew_u)
• number of q samples removed due to spikes(n_spk_q)
• variance of t(var_t)
• wT covariance(cvar_wt)
• covariance ut(cvar_ut)
• kurtosis of variable q(kurt_q)
• number of valid c samples(n_good_c)
• variance of variable w(var_w)
• skewness of variable t(skew_t)
• rotated covariance wq(cvar_rot_wq)
• kurtosis of variable v(kurt_v)
• number of w samples removed due to spikes(n_spk_w)
• latent heat of vaporization(lv)
• rotated covariance uq(cvar_rot_uq)
• kurtosis of variable u(kurt_u)
• kurtosis of variable t(kurt_t)
• skewness of variable v(skew_v)
• number of t samples removed due to spikes(n_spk_t)
• variance of variable u(var_u)
• rotated covariance uw(cvar_rot_uw)
• covariance of tq(cvar_tq)
• skewness of variable w(skew_w)
• Down-boom wind velocity (u)(mean_u)
• average atmospheric pressure (IGRA internal sensor)(atm_pres)
• number of bad or out of range c samples(n_bad_c)
• rotated covariance ut(cvar_rot_ut)
• kurtosis of variable w(kurt_w)
• number of v samples removed due to spikes(n_spk_v)
• rotated mean w(mean_rot_w)
• skewness of variable q(skew_q)
• Dummy altitude for Zeb(alt)
• rotated mean v(mean_rot_v)
• number of valid q samples(n_good_q)
• number of c samples removed due to spikes(n_spk_c)
• skewness of variable c(skew_c)
• number of u samples removed due to spikes(n_spk_u)
• 0=real or 1=dummy value of cp(real_cp)
• number of valid t samples(n_good_t)
• covariance vq(cvar_vq)
• CO2 flux(fc)
• number of samples with \IRGA hardware problem\ flag(n_bad_irga)
• latent heat flux(lv_e)
• condensation pressure(cp)
• rotated covariance vw(cvar_rot_vw)
• covariance wq(cvar_wq)
• uw covariance(cvar_uw)
• mean horizontal wind speed(mean_rot_u)
• Friction velocity(ustar)
• number of samples with IRGA optical path blocked flag(n_bad_irga_light)
• mean value of out of range values and spikes of c -9999 if no spikes(mean_spk_c)
• standard deviation of wind direction(std_wind_dir)
• variance of u(var_rot_u)
• vw covariance(cvar_vw)
• number of samples with bad sonic status flag(n_bad_son_ic)
• covariance of tc(cvar_tc)
• mean value of out of range values and spikes of t -9999 if no spikes(mean_spk_t)
• number of bad or out of range w samples(n_bad_w)
• rotated covariance wt(cvar_rot_wt)
• mean value of \spike\ u samples(mean_spk_u)
• mean value of \spike\ v samples(mean_spk_v)
• covariance uc(cvar_uc)
• vector averaged wind direction(wind_dir)
• variance of q(var_q)
• standard deviation of wind elevation angle(std_elev)
• mean value of \spike\ w samples(mean_spk_w)
• vertical (elevation) wind angle(elev)
• Time offset of tweaks from base_time(time_offset)
• number of bad or out of range v samples(n_bad_v)
• rotated covariance wc(cvar_rot_wc)
• Virtual temperature (T)(mean_t)
• number of valid v samples(n_good_v)
• mean value of out of range values and spikes of q -9999 if no spikes(mean_spk_q)
• Cross-boom wind velocity (v)(mean_v)
• number of valid u samples(n_good_u)
• Vertical angle of wind(phi)
• time(time)
• Vertical wind velocity (w)(mean_w)
• number of bad or out of range u samples(n_bad_u)
• covariance uq(cvar_uq)
• variance of c(var_c)
• covariance uv(cvar_uv)
• average voltage of IRGA cooler(mean_cooler)
• rotated covariance uv(cvar_rot_uv)
• Retrieved water vapor density profile(rho)
• covariance wc(cvar_wc)
• number of bad or out of range q samples(n_bad_q)
• vector averaged wind speed(wind_spd)
• lat(lat)
• covariance vt(cvar_vt)
• rotated covariance vc(cvar_rot_vc)
• 0=real or 1=dummy value of mr(real_mr)
• variance of variable v(var_v)
• covariance of qc(cvar_qc)
• kurtosis of variable c(kurt_c)
• number of bad or out of range t samples(n_bad_t)
• Water vapor density (q)(mean_q)
• covariance vc(cvar_vc)
• base time(base_time)
• mean co2 concentration (c)(mean_c)
• mixing ratio(mr)
• number of valid w samples(n_good_w)
• rotated covariance uc(cvar_rot_uc)
• average temperature (IGRA internal sensor)(temp_irga)

NIM/SKYRAD/M1 - IRTs do not agree with AERI

Since deployment at PYE, and then at NIM, the AMF SKYRAD IRT measured about 10K higher sky 
temperatures than the AERI and the MWRP IRT measureed about 20K higher than the AERI.  
Several actions were taken to diagnose the problem including confirming the correct 
configuration of the IRTs and data logger, cleaning the mirror and lens, and replacing the mirror.

After several days of rain beginning 6/2/2006, the three instruments came into agreement. 
It is unknown whether this was a problem with the AERI, MWRP-IRT or SKYRAD-IRT.

• Sky Infra-Red Temperature(sky_ir_temp)
• Sky Infra Red Temperature Minima(sky_ir_temp_min)
• Sky Infra Red Temperature Maxima(sky_ir_temp_max)

NIM/MWRP/M1 - Software problem

The MWRP computer failed and it was cloned with a new Gx620. Soon after, the MWRP program 
started to crash and was intermittent. Data were lost on March 3, 4, 5. 
On March 7 the program was forcefully ended and restarted. This appears to have cleared 
the problem. The instrument has been running since.

• Raw data stream - documentation not supported(raw)

• Level of free convection pressure(levelFreeConvectionPres)
• lon(lon)
• Time offset of tweaks from base_time(time_offset)
• time(time)
• Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
• azimuth(azimuth)
• Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
• Lifting condensation level pressure(liftingCondensationLevelPres)
• Retrieved cloud liquid water content(liquidWaterContent)
• Ambient surface relative humidity(surfaceRelativeHumidity)
• Dummy altitude for Zeb(alt)
• Lifting condensation level(liftingCondensationLevel)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• Derived virtual temperature(virtualTemperature)
• elevation(elevation)
• Convective Available Potential Energy(cape)
• air temperature (NGM250 predicted)(temperature)
• Internal blackbody reference temperature(blackbodyTemperature)
• Zenith-pointing infrared temperature at 10um(infraredTemperature)
• Level of free convection(levelFreeConvection)
• Flag indicating moisture sensor status(wetWindowFlag)
• Cloud base height(cloudBaseHeight)
• Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
• Microwave brightness temperature(brightnessTemperature)
• Equilibrium level(equilibriumLevel)
• base time(base_time)
• atmospheric pressure at mean sea level and at tropopause (NGM250 predicted)(pressure)
• Equilibrium level pressure(equilibriumLevelPres)
• Ambient surface absolute temperature(surfaceTemperature)
• Surface water vapor density at instrument(surfaceWaterVaporDensity)
• Expected root-mean-square error in liquid water path retrieval using only 23.835
  and 30.0 GHz(liquidWaterPath2RmsError)
• Ambient surface pressure(surfacePressure)
• Derived relative humidity(relativeHumidity)
• Array of heights for the range gates(height)
• Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
• Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
• lat(lat)
• Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
• Data quality flags(dataQualityFlags)
• Interpolated dewpoint temperature(dewpointTemperature)
• Frequency(frequency)
• Retrieved water vapor density(waterVaporDensity)
• Retrieved liquid water path(liquidWaterPath)
• Expected root-mean-square error in temperature retrieval(temperatureRmsError)
• Expected root-mean-square error in precipitable water retrieval using only
  23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
• Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)

• Raw data stream - documentation not supported(raw)

NIM/TSI/M1 - Reprocess: Data processing problem

Due to the high aerosol conditions at Niamey, the TSI appeared to be beyond the limits of 
processing the color JPEG image into cloud fraction values. Several attempts to adjust 
the sky filter values used to process the images did not yielded the desired results. The 
processed images indicate an opaque sky cover, even in the absence of clouds.

The problem was corrected by removing the neutral density filter from the lens and 
re-adjusting the sky filter values.

The data can be reprocessed.

• PNG data stream - documentation not supported(png)

• Pixel count: number total thin(count.thin)
• Pixel count: number thin in horizon area(region.horizon.count.thin)
• Pixel count: number total opaque(count.opaque)
• Pixel count: number opaque in horizon area(region.horizon.count.opaque)
• Pixel count: number opaque in zenith circle(region.zenith.count.opaque)
• Sunshine meter(sunny)
• Pixel count: number opaque in sun circle(region.sun.count.opaque)
• Pixel count: number thin in sun circle(region.sun.count.thin)
• Percent opaque cloud(percent.opaque)
• Percentage thin cloud(percent.thin)
• Pixel count: number thin in zenith circle(region.zenith.count.thin)

NIM/MWRP/M1 - Instrument noise problem

There are spikes and elevated noise in MWRP data. The origine of the spikes is RF 
interference from various sources.  All brightness temperatures are affected, but in particular 
the 5 K-band channels. LWP retrievals are noisy and affected by spikes as a result.

• Raw data stream - documentation not supported(raw)

• Retrieved cloud liquid water content(liquidWaterContent)
• Derived relative humidity(relativeHumidity)
• Derived virtual temperature(virtualTemperature)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
• air temperature (NGM250 predicted)(temperature)
• Retrieved water vapor density(waterVaporDensity)
• Interpolated dewpoint temperature(dewpointTemperature)
• Retrieved liquid water path(liquidWaterPath)
• Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
• Microwave brightness temperature(brightnessTemperature)
• Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)

• Raw data stream - documentation not supported(raw)

NIM/MWRP/M1 - IRT Sensor Calibration

Discrepancies between the MWRP and Skyrad IRT were observed in January. The MWRP IRT 
readings were constantly higher than those of the skyrad IRT. Some changes were introduced to 
the MWRP IRT to address the problem (see DQR D060602.2). On May 3, the IRT mirror was 
replaced. After the change in the mirror, the MWRP IRT readings became about 5-8 C lower. On 
June 3 the agreement between MWRP and Skyrad IRT became satisfactory (2-5 degree C 
difference).

It is hard to numerically quantify the difference in the IRT readings caused by the change 
in the mirror. We can only warn the user that between January 1 and June 3 the MWRP 
readings are 8 to 15 degree higher than the skyrad IRT.

• Raw data stream - documentation not supported(raw)

• Zenith-pointing infrared temperature at 10um(infraredTemperature)

• Raw data stream - documentation not supported(raw)

NIM/AOS/M1 - Mass flow controller failure

The mass flow controller stopped working. A replacement one was installed at the site.

• AOS CCN temperature of the optical particle counter(CCN_T_OPC)
• AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• AOS CCN temperature at top of column(CCN_T_TEC1)
• AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
• AOS CCN temperature of the nafion humidifier(CCN_T_nafion)
• AOS CCN volumetric flowrate of sample air(CCN_Q_sample)
• AOS CCN OPC laser current(CCN_laser_current)
• AOS CCN sample saturation setpoint value reported by instrument(CCN_ss_set)
• AOS CCN temperature of sample air entering the column(CCN_T_sample)
• AOS CCN number concentration by bin(N_CCN_dN)
• AOS CCN sample supersaturation calculated by model)(CCN_ss_calc)
• AOS CCN standard deviation of difference (CCN_T_TEC1 - CCN_T_TEC3)(CCN_dT_TEC3_TEC1_StdDev)
• Hexadecimal flag, non-zero value means instrument is not operating stably(CCN_temp_unstable_flag)
• AOS CCN temperature at middle of column(CCN_T_TEC2)
• Size of upper limit of each CCN bin(CCN_UpperSizeLimit)
• AOS CCN sample pressure(CCN_P_sample)
• AOS CCN temperature of sample air at entrance to instrument(CCN_T_inlet)
• AOS CCN temperature at bottom of column(CCN_T_TEC3)
• AOS number concentration of CCN(N_CCN)

• AOS CLAP or PSAP3W transmittance, green channel(TrG)
• AOS PSAP3W transmittance, red channel(TrR)
• AOS PSAP3W transmittance, blue channel(TrB)

• Temperature of humidograph preheater(T_preHG)
• Relative humidity at wet nephelometer inlet(RH_NephInlet_Wet)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_1um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_10um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_10um_Neph3W_1)
• Wind direction(WindDirection)
• Aerosol light absorption coefficient, green channel, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)
• Relative humidity inside reference nephelometer inlet(RH_NephVol_Dry)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_10um_Neph3W_2)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
• Relative humidity of humidograph preheater(RH_preHG)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
• Relative humidity inside wet nephelometer inlet(RH_NephVol_Wet)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_1um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_1um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_10um_Neph3W_2)
• Condensation Nuclei Concentration Number(N_CPC_1)
• Temperature at inlet(T_MainInlet)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
• Temperature at reference nephelometer inlet(T_NephInlet_Dry)
• Particle Concentration Number from summation of Optical Particle Counter size
  bins(N_OPC_1)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_10um_Neph3W_1)
• Relative humidity at inlet(RH_MainInlet)
• Relative humidity in ambient air(RH_Ambient)
• Aerosol total light scattering coefficient, green channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_1um_Neph3W_2)
• IAP system status(flags_NOAA)
• Aerosol total light scattering coefficient, red channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_1um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_1um_Neph3W_2)
• Temperature at wet nephelometer inlet(T_NephInlet_Wet)
• Aerosol total light scattering coefficient, red channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_10um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_10um_Neph3W_1)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_10um_Neph3W_2)
• Temperature of humidograph controller(T_postHG)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_1um_Neph3W_1)
• Pressure inside wet nephelometer(P_Neph_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_10um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_10um_Neph3W_2)
• Temperature inside wet nephelometer inlet(T_NephVol_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_1um_Neph3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_G_Dry_10um_PSAP3W_1)
• Temperature of ambient air(T_Ambient)
• Wind speed(WindSpeed)
• Aerosol total light scattering coefficient, red channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_1um_Neph3W_2)
• Pressure inside reference nephelometer(P_Neph_Dry)
• Relative humidity at reference nephelometer inlet(RH_NephInlet_Dry)
• Aerosol light absorption coefficient, green channel, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
• Aerosol total light scattering coefficient, red channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_10um_Neph3W_1)
• Relative humidity of humidograph controller(RH_postHG)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_1um_Neph3W_2)
• Temperature inside reference nephelometer inlet(T_NephVol_Dry)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_10um_Neph3W_1)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
• Aerosol total light scattering coefficient, green channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_1um_Neph3W_1)
• Pressure of ambient air(P_Ambient)

NIM/ECOR/M1 - Flux Data Suspect for Some Wind Directions

NIM: For some wind directions the horizontal fetch was not representative of the field in 
which the AMF was located.  Therefore, for the wind direction ranges 90-170 (buildings) 
and 220-280 (trees) degrees, the fluxes are affected by insufficient fetch and  surfaces, 
buildings, or vegetation that are not similar to the local field conditions.

• CO2 flux(fc)
• latent heat flux(lv_e)
• h(h)
• Friction velocity(ustar)

NIM/MWRP/M1 - Reprocessed: IRT configuration setting error

The infrared thermometer settings (IRT) were not configured as specified by the 
manufacturer. The analog output was set to a range of -60 to +50 C (0-10V) instead of -50 to +50 C 
(0-10V). The settings were changed on April 20. The IR temperatures should be slightly 
smaller than reported.

The data have been reprocessed to correct the IRT calibrations.  Reprocessed data were 
archived in August 2006.

• Zenith-pointing infrared temperature at 10um(infraredTemperature)

NIM/MWRP/M1 - Reprocessed - New retrieval coefficients

Occasionally, the retrieved relative humidity was exceeding 120%. Upon reviewing the data 
it was noticed that the high values were appearing in the highest layers (above 8 km) and 
especially during spring season. Since retrievals at the highest levels are mainly 
affected by the climatology used to constrain the retrievals, we reviewed the statistical 
coefficients that were used to retrieve temperature and humidity. It was discovered that, in 
the training dataset (radiosonde), there were a few outliers (invalid radiosonde 
soundings) that had escaped the screening process and were affecting the computations of the 
retrieval coefficients.

We recomputed the retrieval coefficients with the newly screened set of radiosonde data 
and reprocessed all the previous data at Niamey.  The reprocessed data were archived in 
August 2006.

The new coefficients improve temperature and humidity profiles in two ways. The relative 
humidity will not exceed 120% in the upper layers and the temperature profiles will be in 
better agreement with the sonde in the first 4 km.

• Expected root-mean-square error in liquid water path retrieval(liquidWaterPathRmsError)
• Expected root-mean-square error in liquid water content retrieval(liquidWaterContentRmsError)
• Expected root-mean-square error in liquid water path retrieval using only 23.835
  and 30.0 GHz(liquidWaterPath2RmsError)
• Retrieved cloud liquid water content(liquidWaterContent)
• Derived relative humidity(relativeHumidity)
• Derived virtual temperature(virtualTemperature)
• Interpolated water vapor mixing ratio(waterVaporMixingRatio)
• Expected root-mean-square error in precipitable water retrieval(totalPrecipitableWaterRmsError)
• Expected root-mean-square error in water vapor density retrieval(waterVaporDensityRmsError)
• Retrieved liquid water path using only 23.835 and 30.0 GHz(liquidWaterPath2)
• air temperature (NGM250 predicted)(temperature)
• Retrieved water vapor density(waterVaporDensity)
• Interpolated dewpoint temperature(dewpointTemperature)
• Retrieved liquid water path(liquidWaterPath)
• Cloud base height(cloudBaseHeight)
• Retrieved total precipitable water vapor using only 23.835 and 30.0 GHz(totalPrecipitableWater2)
• Expected root-mean-square error in temperature retrieval(temperatureRmsError)
• Expected root-mean-square error in precipitable water retrieval using only
  23.835 and 30.0 GHz(totalPrecipitableWater2RmsError)
• Total precipitable water vapor, from microwave radiometer(totalPrecipitableWater)

NIM/MWRP/M1 - 51.25 GHz channel calibration drifted

After a power outage on May 5 the 51.25 GHz had a slight change in the calibration. The 
resulting LWP computed by using all 6 channels increased of about 0.025 mm (25 g/m2).

• Microwave brightness temperature(brightnessTemperature)

NIM/MWRP/M1 - IRTs do not agree with AERI

Since deployment at PYE, and then at NIM, the AMF SKYRAD IRT measured about 10K higher sky 
temperatures than the AERI and the MWRP IRT measured about 20K higher than the AERI.  
Several actions were taken to diagnose the problem including confirming the correct 
configuration of the IRTs and data logger, cleaning the mirror and lens, and replacing the mirror.

After several days of rain beginning 6/2/2006, the three instruments came into agreement. 
The cause of the discrepancy was probably dust accumulation on the lens of the instrument

• Zenith-pointing infrared temperature at 10um(infraredTemperature)

NIM/AOS/M1 - Bypass valve failure

The flow bypass valve failed which routed flow through the bypass line rather than through 
the instruments. The bypass line was capped the next day. The valve was replaced on 
4/19. Data is considered unusable during the time between the valve failure on 3/22 and the 
capping of the flow line on 3/23.

• AOS CCN temperature of the optical particle counter(CCN_T_OPC)
• AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• AOS CCN temperature at top of column(CCN_T_TEC1)
• AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
• AOS CCN temperature of the nafion humidifier(CCN_T_nafion)
• AOS CCN volumetric flowrate of sample air(CCN_Q_sample)
• AOS CCN OPC laser current(CCN_laser_current)
• AOS CCN sample saturation setpoint value reported by instrument(CCN_ss_set)
• AOS CCN temperature of sample air entering the column(CCN_T_sample)
• AOS CCN number concentration by bin(N_CCN_dN)
• AOS CCN sample supersaturation calculated by model)(CCN_ss_calc)
• AOS CCN standard deviation of difference (CCN_T_TEC1 - CCN_T_TEC3)(CCN_dT_TEC3_TEC1_StdDev)
• Hexadecimal flag, non-zero value means instrument is not operating stably(CCN_temp_unstable_flag)
• AOS CCN temperature at middle of column(CCN_T_TEC2)
• Size of upper limit of each CCN bin(CCN_UpperSizeLimit)
• AOS CCN sample pressure(CCN_P_sample)
• AOS CCN temperature of sample air at entrance to instrument(CCN_T_inlet)
• AOS CCN temperature at bottom of column(CCN_T_TEC3)
• AOS number concentration of CCN(N_CCN)

• AOS CLAP or PSAP3W transmittance, green channel(TrG)
• AOS PSAP3W transmittance, red channel(TrR)
• AOS PSAP3W transmittance, blue channel(TrB)

• Temperature of humidograph preheater(T_preHG)
• Relative humidity at wet nephelometer inlet(RH_NephInlet_Wet)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_1um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_10um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_10um_Neph3W_1)
• Wind direction(WindDirection)
• Aerosol light absorption coefficient, green channel, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)
• Relative humidity inside reference nephelometer inlet(RH_NephVol_Dry)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_10um_Neph3W_2)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
• Relative humidity of humidograph preheater(RH_preHG)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
• Relative humidity inside wet nephelometer inlet(RH_NephVol_Wet)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_1um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_1um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_10um_Neph3W_2)
• Condensation Nuclei Concentration Number(N_CPC_1)
• Temperature at inlet(T_MainInlet)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
• Temperature at reference nephelometer inlet(T_NephInlet_Dry)
• Particle Concentration Number from summation of Optical Particle Counter size
  bins(N_OPC_1)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_10um_Neph3W_1)
• Relative humidity at inlet(RH_MainInlet)
• Relative humidity in ambient air(RH_Ambient)
• Aerosol total light scattering coefficient, green channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_1um_Neph3W_2)
• IAP system status(flags_NOAA)
• Aerosol total light scattering coefficient, red channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_1um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_1um_Neph3W_2)
• Temperature at wet nephelometer inlet(T_NephInlet_Wet)
• Aerosol total light scattering coefficient, red channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_10um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_10um_Neph3W_1)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_10um_Neph3W_2)
• Temperature of humidograph controller(T_postHG)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_1um_Neph3W_1)
• Pressure inside wet nephelometer(P_Neph_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_10um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_10um_Neph3W_2)
• Temperature inside wet nephelometer inlet(T_NephVol_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_1um_Neph3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_G_Dry_10um_PSAP3W_1)
• Temperature of ambient air(T_Ambient)
• Wind speed(WindSpeed)
• Aerosol total light scattering coefficient, red channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_1um_Neph3W_2)
• Pressure inside reference nephelometer(P_Neph_Dry)
• Relative humidity at reference nephelometer inlet(RH_NephInlet_Dry)
• Aerosol light absorption coefficient, green channel, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
• Aerosol total light scattering coefficient, red channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_10um_Neph3W_1)
• Relative humidity of humidograph controller(RH_postHG)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_1um_Neph3W_2)
• Temperature inside reference nephelometer inlet(T_NephVol_Dry)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_10um_Neph3W_1)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
• Aerosol total light scattering coefficient, green channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_1um_Neph3W_1)
• Pressure of ambient air(P_Ambient)

NIM/AOS/M1 - Flow controller failure

Following a power outage at the site both a PID controller for the main sample flow as 
well as a circuit board on the reference nephelometer were inoperable. The PID controller 
was replaced on 5/18 and the neph circuit board was replaced on 6/22. On a site visit in 
August the mentor found the PID had not been programmed correctly and was reading erroneous 
flows. The actual flow was at 50% of the recorded flow. Because the sample flow is 
diluted by 50% this makes most if not all of the sample flow from 5/18 to 8/11 from the diluter.

• AOS CCN temperature of the optical particle counter(CCN_T_OPC)
• AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• AOS CCN temperature at top of column(CCN_T_TEC1)
• AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
• AOS CCN temperature of the nafion humidifier(CCN_T_nafion)
• AOS CCN volumetric flowrate of sample air(CCN_Q_sample)
• AOS CCN OPC laser current(CCN_laser_current)
• First stage monitor voltage(CCN_FirstStageMonitorVoltage)
• AOS CCN sample saturation setpoint value reported by instrument(CCN_ss_set)
• AOS CCN temperature of sample air entering the column(CCN_T_sample)
• CCN Propotional valve voltage(CCN_ProportionalValveVoltage)
• AOS CCN sample supersaturation calculated by model)(CCN_ss_calc)
• AOS CCN number concentration by bin(N_CCN_dN)
• AOS CCN standard deviation of difference (CCN_T_TEC1 - CCN_T_TEC3)(CCN_dT_TEC3_TEC1_StdDev)
• Hexadecimal flag, non-zero value means instrument is not operating stably(CCN_temp_unstable_flag)
• AOS CCN temperature at middle of column(CCN_T_TEC2)
• Size of upper limit of each CCN bin(CCN_UpperSizeLimit)
• CCN temperature gradient(CCN_Temperature_Gradient)
• AOS CCN sample pressure(CCN_P_sample)
• AOS CCN temperature of sample air at entrance to instrument(CCN_T_inlet)
• AOS number concentration of CCN(N_CCN)
• AOS CCN temperature at bottom of column(CCN_T_TEC3)

• AOS CLAP or PSAP3W transmittance, green channel(TrG)
• AOS PSAP3W transmittance, red channel(TrR)
• AOS PSAP3W transmittance, blue channel(TrB)

• Relative humidity at wet nephelometer inlet(RH_NephInlet_Wet)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_1um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_10um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_10um_Neph3W_1)
• Aerosol light absorption coefficient, green channel, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)
• Relative humidity inside reference nephelometer inlet(RH_NephVol_Dry)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_10um_Neph3W_2)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
• Relative humidity inside wet nephelometer inlet(RH_NephVol_Wet)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_1um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_1um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_10um_Neph3W_2)
• Condensation Nuclei Concentration Number(N_CPC_1)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
• Temperature at reference nephelometer inlet(T_NephInlet_Dry)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_10um_Neph3W_1)
• Aerosol total light scattering coefficient, green channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_1um_Neph3W_2)
• Aerosol total light scattering coefficient, red channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_1um_Neph3W_1)
• Temperature at wet nephelometer inlet(T_NephInlet_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_1um_Neph3W_2)
• Aerosol total light scattering coefficient, red channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_10um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_10um_Neph3W_1)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_10um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_1um_Neph3W_1)
• Pressure inside wet nephelometer(P_Neph_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_10um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_10um_Neph3W_2)
• Temperature inside wet nephelometer inlet(T_NephVol_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_1um_Neph3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_G_Dry_10um_PSAP3W_1)
• Aerosol total light scattering coefficient, red channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_1um_Neph3W_2)
• Pressure inside reference nephelometer(P_Neph_Dry)
• Relative humidity at reference nephelometer inlet(RH_NephInlet_Dry)
• Aerosol light absorption coefficient, green channel, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
• Aerosol total light scattering coefficient, red channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_10um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_1um_Neph3W_2)
• Temperature inside reference nephelometer inlet(T_NephVol_Dry)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_10um_Neph3W_1)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
• Aerosol total light scattering coefficient, green channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_1um_Neph3W_1)

NIM/AOS/M1 - Missing data

Data are missing and unrecoverable.

• AOS CCN temperature of the optical particle counter(CCN_T_OPC)
• AOS bin number of lowest channel of OPC include in summation of N_CCN(N_CCN_bin_number)
• AOS CCN temperature at top of column(CCN_T_TEC1)
• AOS CCN volumetric flowrate of sheath air(CCN_Q_sheath)
• lat(lat)
• AOS CCN temperature of the nafion humidifier(CCN_T_nafion)
• base time(base_time)
• AOS CCN volumetric flowrate of sample air(CCN_Q_sample)
• Time offset of tweaks from base_time(time_offset)
• AOS CCN OPC laser current(CCN_laser_current)
• AOS CCN sample saturation setpoint value reported by instrument(CCN_ss_set)
• AOS CCN temperature of sample air entering the column(CCN_T_sample)
• time(time)
• AOS CCN number concentration by bin(N_CCN_dN)
• AOS CCN sample supersaturation calculated by model)(CCN_ss_calc)
• AOS CCN standard deviation of difference (CCN_T_TEC1 - CCN_T_TEC3)(CCN_dT_TEC3_TEC1_StdDev)
• Hexadecimal flag, non-zero value means instrument is not operating stably(CCN_temp_unstable_flag)
• AOS CCN temperature at middle of column(CCN_T_TEC2)
• Size of upper limit of each CCN bin(CCN_UpperSizeLimit)
• lon(lon)
• AOS CCN sample pressure(CCN_P_sample)
• AOS CCN temperature of sample air at entrance to instrument(CCN_T_inlet)
• AOS number concentration of CCN(N_CCN)
• AOS CCN temperature at bottom of column(CCN_T_TEC3)
• Dummy altitude for Zeb(alt)

• lon(lon)
• time(time)
• Time offset of tweaks from base_time(time_offset)
• lat(lat)
• Dummy altitude for Zeb(alt)
• AOS CLAP or PSAP3W transmittance, green channel(TrG)
• AOS PSAP3W transmittance, red channel(TrR)
• base time(base_time)
• AOS PSAP3W transmittance, blue channel(TrB)

• time(time)
• Temperature of humidograph preheater(T_preHG)
• Relative humidity at wet nephelometer inlet(RH_NephInlet_Wet)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_1um_Neph3W_1)
• Dummy altitude for Zeb(alt)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_10um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_10um_Neph3W_1)
• Wind direction(WindDirection)
• Time offset of tweaks from base_time(time_offset)
• Aerosol light absorption coefficient, green channel, 1 um size cut(Ba_G_Dry_1um_PSAP1W_1)
• lat(lat)
• Relative humidity inside reference nephelometer inlet(RH_NephVol_Dry)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_10um_Neph3W_2)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_B_Dry_1um_PSAP3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_G_Dry_1um_PSAP3W_1)
• base time(base_time)
• Relative humidity of humidograph preheater(RH_preHG)
• Absorption Coefficient Blue, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_B_Dry_10um_PSAP3W_1)
• Aerosol total light scattering coefficient, blue channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_1um_Neph3W_2)
• Relative humidity inside wet nephelometer inlet(RH_NephVol_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_B_Wet_1um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_10um_Neph3W_2)
• Condensation Nuclei Concentration Number(N_CPC_1)
• Temperature at inlet(T_MainInlet)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_1um_Neph3W_1)
• Temperature at reference nephelometer inlet(T_NephInlet_Dry)
• lon(lon)
• Particle Concentration Number from summation of Optical Particle Counter size
  bins(N_OPC_1)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_B_Dry_10um_Neph3W_1)
• Relative humidity in ambient air(RH_Ambient)
• Relative humidity at inlet(RH_MainInlet)
• Aerosol total light scattering coefficient, green channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_G_Wet_1um_Neph3W_2)
• IAP system status(flags_NOAA)
• Aerosol total light scattering coefficient, red channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_1um_Neph3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_1um_Neph3W_2)
• Temperature at wet nephelometer inlet(T_NephInlet_Wet)
• Aerosol total light scattering coefficient, red channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_10um_Neph3W_2)
• Aerosol total light scattering coefficient, green channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_10um_Neph3W_1)
• Aerosol total light scattering coefficient, blue channel, 10 um size cut, wet
  three wavelength nephelometer(Bs_B_Wet_10um_Neph3W_2)
• Temperature of humidograph controller(T_postHG)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_R_Dry_1um_Neph3W_1)
• Pressure inside wet nephelometer(P_Neph_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_10um_Neph3W_2)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 10 um
  size cut, wet three wavelength nephelometer(Bbs_G_Wet_10um_Neph3W_2)
• Temperature inside wet nephelometer inlet(T_NephVol_Wet)
• Aerosol backwards-hemispheric light scattering coefficient, green channel, 1 um
  size cut, reference three wavelength nephelometer(Bbs_G_Dry_1um_Neph3W_1)
• Absorption Coefficient Green, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_G_Dry_10um_PSAP3W_1)
• Temperature of ambient air(T_Ambient)
• Wind speed(WindSpeed)
• Aerosol total light scattering coefficient, red channel, 1 um size cut, wet
  three wavelength nephelometer(Bs_R_Wet_1um_Neph3W_2)
• Relative humidity at reference nephelometer inlet(RH_NephInlet_Dry)
• Pressure inside reference nephelometer(P_Neph_Dry)
• Aerosol light absorption coefficient, green channel, 10 um size cut(Ba_G_Dry_10um_PSAP1W_1)
• Aerosol total light scattering coefficient, red channel, 10 um size cut,
  reference three wavelength nephelometer(Bs_R_Dry_10um_Neph3W_1)
• Relative humidity of humidograph controller(RH_postHG)
• Aerosol backwards-hemispheric light scattering coefficient, red channel, 1 um
  size cut, wet three wavelength nephelometer(Bbs_R_Wet_1um_Neph3W_2)
• Temperature inside reference nephelometer inlet(T_NephVol_Dry)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 1 um size cut(Ba_R_Dry_1um_PSAP3W_1)
• Aerosol backwards-hemispheric light scattering coefficient, blue channel, 10 um
  size cut, reference three wavelength nephelometer(Bbs_B_Dry_10um_Neph3W_1)
• Absorption Coefficient Red, corrected for flow and sample area, 3 wavelength
  PSAP, 10 um size cut(Ba_R_Dry_10um_PSAP3W_1)
• Aerosol total light scattering coefficient, green channel, 1 um size cut,
  reference three wavelength nephelometer(Bs_G_Dry_1um_Neph3W_1)
• Pressure of ambient air(P_Ambient)

NIM/ECOR/M1 - Effects on ECOR CO2 Flux and Concentration By Aircraft

Aircraft landings, departures, and running aircraft on the airport pad
were found to produce large spikes in the half hourly CO2 flux and small spikes in CO2 
concentration on many days during the entire deployment of the AMF at NIM.  This influence 
was found on 40% of the days in March and April 2006 and sometimes for multiple periods in 
a day; this was typical of  the year of data.  The spikes range from only several 
micromoles s-1 m-2 to one hundred or more for flux (a typical spike was in the twenties) and 
near zero to 1.0 mmoles m-3 for CO2 concentration (typically around 0.15).

The aircraft influence was caused by persistent easterly winds; the airport
terminal pad and the nearest part of the runway were almost directly to the
east of the ECOR location.

Occasionally an influence on water vapor density was detected, but this was fairly rare 
and usually of very small magnitude.

• rotated covariance vc(cvar_rot_vc)
• covariance wc(cvar_wc)
• rotated covariance wc(cvar_rot_wc)
• covariance of tc(cvar_tc)
• CO2 flux(fc)
• rotated covariance uc(cvar_rot_uc)
• variance of c(var_c)
• covariance vc(cvar_vc)
• covariance uc(cvar_uc)
• mean co2 concentration (c)(mean_c)