TWP/C1 - Generator Problem

On November 18 the generator was turned off due to a fault in the oil
pressure sensor. It had been having trouble for at least a day prior
to the manual shut-down. ADaM, the MPL, and the WSI were also shut
down to prevent an unscheduled power cycle. As a result, there is a block 
of missing data from November 20-27 for all of the instruments except 
those connected to the Zeno loggers (SKYRAD, GNDRAD, SMET).

• Dry-Bulb Temperature(tdry)
• Time offset from base_time(base_time)
• north latitude for all the input platforms.(lat)
• east longitude for all the input platforms.(lon)
• pressure at constant pressure surface(pres)
• Ascent Rate(asc)
• Wind Status(wstat)
• Time offset of tweaks from base_time(time_offset)
• surface wind speed(wspd)
• Surface dew point temperature(dp)
• Wind Direction(deg)
• altitude above sea levelaltunits(alt)
• Relative humidity scaled, by total column amount from MWR(rh)

• Background signal(background_signal)
• GPS raw data filename(filename)
• east longitude for all the input platforms.(lon)
• north latitude for all the input platforms.(lat)
• Filter temperature(filter_temp)
• Number of laser pulses summed during measurement interval(shots_summed)
• Instrument temperature(instrument_temp)
• Time offset from base_time(base_time)
• Detector temperature(detector_temp)
• altitude above sea levelaltunits(alt)
• Voltage level which operates the thermistor(voltage_10)
• Average cloud base height used in the retrieval(cbh)
• Repetition rate, or Trigger Frequency of the laser(pulse_rep)
• Voltage level which operates the energy monitor(voltage_15)
• Laser temperature(laser_temp)
• Aerosol volume backscattering coefficient at 355 nm(backscatter)
• Time offset of tweaks from base_time(time_offset)
• Voltage level which operates the A_D card and the detector(voltage_5)
• Energy output per pulse of transmitted laser beam at 523 nm (Doubled Nd-YLF)(energy_monitor)

• east longitude for all the input platforms.(lon)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Hemispheric Broadband Irradiance, offset and cosine corrected, broadband scale
  factor applied(hemisp_broadband)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Time offset of tweaks from base_time(time_offset)
• Time offset from base_time(base_time)
• Data Logger Supply Voltage(logger_volt)
• north latitude for all the input platforms.(lat)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• altitude above sea levelaltunits(alt)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• MFRSR Detector Temperature(mfrsr_temp)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

• Actual Azimuth(actaz)
• north latitude for all the input platforms.(lat)
• Actual elevation angle(actel)
• Mean total liquid water amount along LOS path(liq)
• east longitude for all the input platforms.(lon)
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• altitude above sea levelaltunits(alt)
• Mean total water vapor amount along LOS path(vap)
• Mean IR brightness temperature(ir_temp)
• Mean 23.8 GHz sky brightness temperature(tbsky23)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Time offset from base_time(base_time)
• Time offset of tweaks from base_time(time_offset)

• Mixer kinetic (physical) temperature(tkxc)
• 23.8 GHz Blackbody signal(bb23)
• Blackbody kinetic temperature(tkbb)
• east longitude for all the input platforms.(lon)
• 31.4 GHz noise injection brightness temperature(unoise31)
• north latitude for all the input platforms.(lat)
• Actual elevation angle(actel)
• Mean total liquid water amount along LOS path(liq)
• Time offset from base_time(base_time)
• Which LOS configuration(losn)
• 31.4 GHz Blackbody signal(bb31)
• 31.4 GHz blackbody+noise injection signal(bbn31)
• Actual Azimuth(actaz)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• 31.4 GHz sky signal(sky31)
• 23.8 GHz sky plus noise injection signal(skyn23)
• Mean 31.4 GHz sky brightness temperature(tbsky31)
• Mean 23.8 GHz sky brightness temperature(tbsky23)
• Time offset of tweaks from base_time(time_offset)
• 23.8 GHz sky signal(sky23)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Mean IR brightness temperature(ir_temp)
• 23.8 GHz noise injection brightness temperature(unoise23)
• Mean total water vapor amount along LOS path(vap)
• altitude above sea levelaltunits(alt)
• 31.4 GHz sky+noise injection signal(skyn31)

• distance to center of range bin after correcting for offset in sync(range)
• Degrees from vertical (-15 to +90)(tilt_angle)
• Time offset of tweaks from base_time(time_offset)
• Aerosol volume backscattering coefficient at 355 nm(backscatter)
• Time offset from base_time(base_time)
• Flag indicating aeri retrieval status(status_flag)
• Lowest cloud base height detected.(first_cbh)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Millivolts at internal ADC input(window_contamination)
• Vertical visibility(vertical_visibility)
• GPS raw data filename(filename)
• Detection status. See details(detection_status)
• Altitude of highest signal(alt_highest_signal)
• Millivolts at internal ADC input (0 to 2500)(background_light)
• Second lowest cloud base height(second_cbh)
• east longitude for all the input platforms.(lon)
• Third cloud base height(third_cbh)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• Warning and alarm status bits(status_string)
• north latitude for all the input platforms.(lat)
• altitude above sea levelaltunits(alt)
• Laser temperature(laser_temperature)
• SUM of detected and normalized backscatter(sum_backscatter)
• 6 character string describing instrument measurement parameters(measurement_parameters)

• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• north latitude for all the input platforms.(lat)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Time offset from base_time(base_time)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• east longitude for all the input platforms.(lon)
• Hemispheric Broadband Irradiance (Approximate), MFRSR(total_hemisp_broadband)
• MFRSR Detector Temperature(mfrsr_temp)
• Data Logger Supply Voltage(logger_volt)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• altitude above sea levelaltunits(alt)
• Time offset of tweaks from base_time(time_offset)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)

• north latitude for all the input platforms.(lat)
• Direct-normal Irradiance, 665 nm(dirn5)
• Direct-normal Irradiance, 610 nm(dirn4)
• Direct-normal Irradiance, Broadband Solar(dirn1)
• Time offset of tweaks from base_time(time_offset)
• Direct-normal Irradiance, 415 nm(dirn2)
• Direct-normal Irradiance, 500 nm(dirn3)
• Datalogger supply voltage(supply_voltage)
• Diffuse Horizontal Irradiance, 940 nm(dif7)
• Diffuse Horizontal Irradiance, 862 nm(dif6)
• Time offset from base_time(base_time)
• Total Horizontal Irradiance, 415 nm(tot2)
• Total Horizontal Irradiance, Broadband Solar(tot1)
• Diffuse Horizontal Irradiance, 610 nm(dif4)
• Total Horizontal Irradiance, 500 nm(tot3)
• Diffuse Horizontal Irradiance, 665 nm(dif5)
• Total Horizontal Irradiance, 610 nm(tot4)
• Diffuse Horizontal Irradiance, 500 nm(dif3)
• Total Horizontal Irradiance, 940 nm(tot7)
• Diffuse Horizontal Irradiance, 415 nm(dif2)
• altitude above sea levelaltunits(alt)
• Total Horizontal Irradiance, 862 nm(tot6)
• Total Horizontal Irradiance, 665 nm(tot5)
• Detector temperature(detector_temp)
• east longitude for all the input platforms.(lon)
• Diffuse Horizontal Irradiance, Broadband Solar(dif1)
• Direct-normal Irradiance, 862 nm(dirn6)
• Direct-normal Irradiance, 940 nm(dirn7)

• Tip configuration number(tipn)
• 23.8 GHz Blackbody signal(23bb)
• 31.4 GHz blackbody signal(31tipbb)
• Time offset from base_time(base_time)
• 31.4 GHz noise diode calib adjusted to tknd_nom and low_pass filltered(31expave)
• 23.8 GHz blackbody+noise injection signal(23bbn)
• 31.4 GHz sky signal+noise injection signal(31tipskynd)
• Noise injection temp at 23.8 GHz adjusted to tkbb(tnd23)
• Temperature correction coefficient at 31.4 GHz(tc31)
• Noise injection temp at 31.4 GHz adjusted to tkbb(tnd31)
• 31.4 GHz goodness-of-fit coefficient(31r)
• 31.4 GHz Blackbody signal(31bb)
• north latitude for all the input platforms.(lat)
• Noise injection temp at 31.4 GHz derived from this tip(tnd31I)
• Airmass value(airm)
• 31.4 GHz sky signal(tipsky31)
• Ambient temperature(tkair)
• Noise diode mount temperature(tknd)
• 31.4 GHz goodness-of-fit coefficient(r31)
• 23.8 GHz calibration curve offset(23tbzenith)
• altitude above sea levelaltunits(alt)
• Noise injection temp at nominal temperature at 31.4 GHz(tnd_nom31)
• 31.4 GHz Blackbody signal(bb31)
• Noise injection temp at 23.8 GHz derived from this tip(tnd23I)
• 23.8 GHz noise diode calib adjusted to tknd_nom and low_pass filltered(23expave)
• 23.8 GHz sky signal+noise injection signal(23tipskynd)
• Actual Azimuth(actaz)
• 23.8 GHz goodness-of-fit coefficient(r23)
• 23.8 GHz noise diode calib (injection temp) at Tkxc(23ndiode)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Mean IR brightness temperature(ir_temp)
• 23.8 GHz calibration curve slope(23gain)
• east longitude for all the input platforms.(lon)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• 23.8 GHz sky signal(23tipsky)
• Temperature correction coefficient at 23.8 GHz(tc23)
• 23.8 GHz goodness-of-fit coefficient(23r)
• 31.4 GHz blackbody+noise injection signal(31bbn)
• Noise injection temp at nominal temperature at 23.8 GHz(tnd_nom23)
• Actual elevation angle(actel)
• Mixer kinetic (physical) temperature(tkxc)
• 31.4 GHz blackbody+noise injection signal(bbn31)
• 23.8 GHz Blackbody signal(bb23)
• 23.8 GHz blackbody signal(23tipbb)
• Time offset of tweaks from base_time(time_offset)
• Blackbody kinetic temperature(tkbb)
• 31.4 GHz calibration curve offset(31tbzenith)
• 31.4 GHz sky signal(31tipsky)
• 23.8 GHz sky signal(tipsky23)
• 31.4 GHz noise diode calib (injection temp) at Tkxc(31ndiode)
• 31.4 GHz calibration curve slope(31gain)
• Blackbody temperature 1(tkbb1)
• Blackbody temperature 2(tkbb2)

• 23.8 GHz sky signal+noise injection signal(tipskynd23)
• 31.4 GHz calibration curve slope(gain31)
• 31.4 GHz sky signal(tipsky31)
• 23.8 GHz zenith brightness temperature(tbzenith23)
• 31.4 GHz blackbody+noise injection signal(bbn31)
• 23.8 GHz noise diode calib adjusted to tknd_nom and low_pass filtered(expave23)
• 23.8 GHz noise diode calib (injection temp) at Tkxc(ndiode23)
• Mixer kinetic (physical) temperature(tkxc)
• Water on Teflon window (1=WET, 0=DRY)(wet_window)
• Airmass value(airm)
• 31.4 GHz noise diode calib adjusted to tknd_nom and low_pass filtered(expave31)
• 23.8 GHz blackbody signal(tipbb23)
• 23.8 GHz calibration curve slope(gain23)
• 31.4 GHz Blackbody signal(bb31)
• Time offset of tweaks from base_time(time_offset)
• Tip configuration number(tipn)
• Actual Azimuth(actaz)
• north latitude for all the input platforms.(lat)
• 31.4 GHz zenith brightness temperature(tbzenith31)
• 31.4 GHz noise diode calib (injection temp) at Tkxc(ndiode31)
• 23.8 GHz sky signal(tipsky23)
• 23.8 GHz blackbody+noise injection signal(bbn23)
• 31.4 GHz sky signal+noise injection signal(tipskynd31)
• altitude above sea levelaltunits(alt)
• east longitude for all the input platforms.(lon)
• Time offset from base_time(base_time)
• 23.8 GHz Blackbody signal(bb23)
• Blackbody temperature 2(tkbb2)
• Actual elevation angle(actel)
• Blackbody temperature 1(tkbb1)
• Mean IR brightness temperature(ir_temp)
• 23.8 GHz goodness-of-fit coefficient(r23)
• 31.4 GHz blackbody signal(tipbb31)
• 31.4 GHz goodness-of-fit coefficient(r31)

• Aerosol volume backscattering coefficient at 355 nm(backscatter)
• Lowest cloud base height detected.(first_cbh)
• GPS raw data filename(filename)
• 6 character string describing instrument measurement parameters(measurement_parameters)
• Altitude of highest signal(alt_highest_signal)
• Warning and alarm status bits(status_string)
• Laser temperature(laser_temperature)
• distance to center of range bin after correcting for offset in sync(range)
• Time offset of tweaks from base_time(time_offset)
• Detection status. See details(detection_status)
• Percentage of nominal factory setting (0 to 999%)(laser_pulse_energy)
• Vertical visibility(vertical_visibility)
• Degrees from vertical (-15 to +90)(tilt_angle)
• Millivolts at internal ADC input (0 to 2500)(background_light)
• Flag indicating aeri retrieval status(status_flag)
• Third cloud base height(third_cbh)
• Millivolts at internal ADC input(window_contamination)
• SUM of detected and normalized backscatter(sum_backscatter)
• altitude above sea levelaltunits(alt)
• north latitude for all the input platforms.(lat)
• Second lowest cloud base height(second_cbh)
• Percentage of nominal factory setting (0 to 999%)(receiver_sensitivity)
• Time offset from base_time(base_time)
• east longitude for all the input platforms.(lon)

• Time offset from base_time(base_time)
• Time offset of tweaks from base_time(time_offset)
• Ascent Rate(asc)
• model meridional wind velocity(v_wind)
• Relative humidity scaled, by total column amount from MWR(rh)
• Wind Status(wstat)
• surface wind speed(wspd)
• Dry-Bulb Temperature(tdry)
• north latitude for all the input platforms.(lat)
• Wind Direction(deg)
• east longitude for all the input platforms.(lon)
• Surface dew point temperature(dp)
• model zonal wind velocity(u_wind)
• pressure at constant pressure surface(pres)
• altitude above sea levelaltunits(alt)

TWP/MFRSR/C1 - Reprocess: Corrupt Data

An examination of the raw data indicated that the raw data was apparently good, so the 
data corruption entered the data stream during the calibration of the raw files.  It was 
found that the dark-count offset in the calibration files was far, far too large.  This 
offset was set to zero (the usual procedure except in special cases) and the data now look 
very good.  ASCII files were sent to Andy Vogelmann along with supplementary data (ios, 
etc.) and I mentioned that these data had only been inspected visually and therefore could 
still be erroneous -- althought I don't think Andy will discover any errors because from a 
visual standpoint these data look fine.  It took several days to identify the proble and 
reprocess these data but at least Andy has good data now (or so we hope).  -Jim Barnard

• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Hemispheric Broadband Irradiance, offset and cosine corrected, broadband scale
  factor applied(hemisp_broadband)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• Hemispheric Broadband Irradiance (Approximate), MFRSR(total_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)

• Diffuse Horizontal Irradiance, 500 nm(dif3)
• Total Horizontal Irradiance, 940 nm(tot7)
• Diffuse Horizontal Irradiance, 415 nm(dif2)
• Direct-normal Irradiance, Broadband Solar(dirn1)
• Direct-normal Irradiance, 415 nm(dirn2)
• Total Horizontal Irradiance, 862 nm(tot6)
• Total Horizontal Irradiance, 665 nm(tot5)
• Direct-normal Irradiance, 500 nm(dirn3)
• Diffuse Horizontal Irradiance, Broadband Solar(dif1)
• Diffuse Horizontal Irradiance, 610 nm(dif4)
• Total Horizontal Irradiance, 500 nm(tot3)
• Direct-normal Irradiance, 665 nm(dirn5)
• Total Horizontal Irradiance, 415 nm(tot2)
• Diffuse Horizontal Irradiance, 940 nm(dif7)
• Direct-normal Irradiance, 862 nm(dirn6)
• Diffuse Horizontal Irradiance, 862 nm(dif6)
• Total Horizontal Irradiance, Broadband Solar(tot1)
• Diffuse Horizontal Irradiance, 665 nm(dif5)
• Direct-normal Irradiance, 940 nm(dirn7)
• Total Horizontal Irradiance, 610 nm(tot4)
• Direct-normal Irradiance, 610 nm(dirn4)

TWP/C1 - Incorrect elevation reported in Manus Data

(From Bill Clements) We have been using 6m MSL as the station
elevation of Momote (Manus).  This was based on information
posted near the station barometer in the Momote Weather Service
Office.  It turns out that the official WMO station elevation
for Momote is 4m MSL and the upper air elevation is 5m MSL.

All Manus instruments except the sonde station are at 4m MSL.
The sonde launching station is at 5m MSL.

• altitude above sea levelaltunits(alt)

• altitude above sea levelaltunits(alt)

• altitude above sea levelaltunits(alt)

TWP/MFRSR/C1 - AM Shading Problem

More TWP data has arrived from Manus Island for the time period 1999/07/05
to 1999/07/19.  These data reveal an AM shading problem (the subject of a
PIF). The head temperature is in range. A qualitative, visual examination of these data
 indicates that the instrument is in a state of good calibration.  An effort
was made to be more quantitative by performing a Langley analysis. If one
trusts the Langley regressions for this site, calibration errors can be
estimated as:

wavelength    estimated error (negative mean MFRSR is too low)
415               0.9%
500               1.1%
615               0.2%
673              -1.2%
870               0.3%

The issue here is whether the Langley regressions can be trusted.  Some of
the Langley events give total optical depths less than the Rayleigh limit
and so we don't know if the head is out of level, or whether the variation
of aerosol with time throws the Langley regression off (because a central
assumption for the Langley regression to be valid is that the optical
depth is constant with time) , or ??  My guess is that -- aside from the AM
shading problem -- the instrument is OK, but I would not want to assert this
under oath.

• Time offset of tweaks from base_time(time_offset)
• north latitude for all the input platforms.(lat)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• altitude above sea levelaltunits(alt)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• east longitude for all the input platforms.(lon)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Time offset from base_time(base_time)
• Hemispheric Broadband Irradiance, offset and cosine corrected, broadband scale
  factor applied(hemisp_broadband)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• MFRSR Detector Temperature(mfrsr_temp)
• Data Logger Supply Voltage(logger_volt)

• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• altitude above sea levelaltunits(alt)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Time offset from base_time(base_time)
• Hemispheric Broadband Irradiance (Approximate), MFRSR(total_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• MFRSR Detector Temperature(mfrsr_temp)
• Data Logger Supply Voltage(logger_volt)
• Time offset of tweaks from base_time(time_offset)
• east longitude for all the input platforms.(lon)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• north latitude for all the input platforms.(lat)

• north latitude for all the input platforms.(lat)
• Diffuse Horizontal Irradiance, 610 nm(dif4)
• Total Horizontal Irradiance, 500 nm(tot3)
• Direct-normal Irradiance, 665 nm(dirn5)
• Diffuse Horizontal Irradiance, 665 nm(dif5)
• Total Horizontal Irradiance, 610 nm(tot4)
• Direct-normal Irradiance, 610 nm(dirn4)
• Diffuse Horizontal Irradiance, 500 nm(dif3)
• Time offset from base_time(base_time)
• Total Horizontal Irradiance, 940 nm(tot7)
• Diffuse Horizontal Irradiance, 415 nm(dif2)
• altitude above sea levelaltunits(alt)
• Direct-normal Irradiance, Broadband Solar(dirn1)
• Direct-normal Irradiance, 415 nm(dirn2)
• Time offset of tweaks from base_time(time_offset)
• Total Horizontal Irradiance, 862 nm(tot6)
• Total Horizontal Irradiance, 665 nm(tot5)
• Direct-normal Irradiance, 500 nm(dirn3)
• Diffuse Horizontal Irradiance, Broadband Solar(dif1)
• Datalogger supply voltage(supply_voltage)
• Detector temperature(detector_temp)
• Total Horizontal Irradiance, 415 nm(tot2)
• Diffuse Horizontal Irradiance, 940 nm(dif7)
• Direct-normal Irradiance, 862 nm(dirn6)
• Diffuse Horizontal Irradiance, 862 nm(dif6)
• Total Horizontal Irradiance, Broadband Solar(tot1)
• east longitude for all the input platforms.(lon)
• Direct-normal Irradiance, 940 nm(dirn7)

TWP/MFRSR/C1 - Reprocess: Metadata error

The mfrsr C1 head was swapped out on 99.09.02.  The old head ID ($0248) remained in the 
data stream until 99.09.04, at which time the correct value, $0922 was loaded.

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

TWP/MFRSR/C1 - Reprocess: Metadata error

On 1999/02/27 head 225 was replaced by head 227 but the head ID was not updated in the 
documentation until 1999/08/12.  The head ID was incorrectly reported in the data for this 
period.

• Time offset from base_time(base_time)

• Time offset from base_time(base_time)

TWP/MFRSR - Manus Island - shading problems

From about 1999/06/15 (or much earlier - i can't tell for sure), the Manus Island
MFRSR had shading problem in the morning hours.  These shading problems
can be identified by the fuzziness in the direct normal irradiance.  The
problems were apparently corrected on 1999/08/17.  Time will tell if the
shading problem has been solved.  Only the direct normal irradiance and the
diffuse irradiance are affected.  The total irradiance is OK.

• Time offset of tweaks from base_time(time_offset)
• north latitude for all the input platforms.(lat)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• altitude above sea levelaltunits(alt)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• east longitude for all the input platforms.(lon)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Time offset from base_time(base_time)
• Hemispheric Broadband Irradiance, offset and cosine corrected, broadband scale
  factor applied(hemisp_broadband)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• MFRSR Detector Temperature(mfrsr_temp)
• Data Logger Supply Voltage(logger_volt)

• Raw data stream - documentation not supported(Raw data stream - documentation not supported)

• Hemispheric Irradiance, MFRSR(hemisp_narrowband)
• Diffuse Hemispheric Irradiance, MFRSR(diffuse_hemisp_narrowband)
• altitude above sea levelaltunits(alt)
• Diffuse Hemispheric Broadband Irradiance, offset subtracted, cosine corrected,
  broadband scale applied(diffuse_hemisp_broadband)
• Cosine of Apparent Solar Zenith Angle(cosine_solar_zenith_angle)
• Time offset from base_time(base_time)
• Hemispheric Broadband Irradiance (Approximate), MFRSR(total_hemisp_broadband)
• Direct Normal Irradiance, NIMFR(direct_norm_narrowband)
• MFRSR Detector Temperature(mfrsr_temp)
• Data Logger Supply Voltage(logger_volt)
• Time offset of tweaks from base_time(time_offset)
• east longitude for all the input platforms.(lon)
• Fields flagged by callang: 0 = no flag\n,(callang_flags)
• Direct Normal Irradiance, Uncalibrated Silicon Detector, NIMFR(direct_norm_broadband)
• north latitude for all the input platforms.(lat)

• north latitude for all the input platforms.(lat)
• Diffuse Horizontal Irradiance, 610 nm(dif4)
• Total Horizontal Irradiance, 500 nm(tot3)
• Direct-normal Irradiance, 665 nm(dirn5)
• Diffuse Horizontal Irradiance, 665 nm(dif5)
• Total Horizontal Irradiance, 610 nm(tot4)
• Direct-normal Irradiance, 610 nm(dirn4)
• Diffuse Horizontal Irradiance, 500 nm(dif3)
• Time offset from base_time(base_time)
• Total Horizontal Irradiance, 940 nm(tot7)
• Diffuse Horizontal Irradiance, 415 nm(dif2)
• altitude above sea levelaltunits(alt)
• Direct-normal Irradiance, Broadband Solar(dirn1)
• Direct-normal Irradiance, 415 nm(dirn2)
• Time offset of tweaks from base_time(time_offset)
• Total Horizontal Irradiance, 862 nm(tot6)
• Total Horizontal Irradiance, 665 nm(tot5)
• Direct-normal Irradiance, 500 nm(dirn3)
• Diffuse Horizontal Irradiance, Broadband Solar(dif1)
• Datalogger supply voltage(supply_voltage)
• Detector temperature(detector_temp)
• Total Horizontal Irradiance, 415 nm(tot2)
• Diffuse Horizontal Irradiance, 940 nm(dif7)
• Direct-normal Irradiance, 862 nm(dirn6)
• Diffuse Horizontal Irradiance, 862 nm(dif6)
• Total Horizontal Irradiance, Broadband Solar(tot1)
• east longitude for all the input platforms.(lon)
• Direct-normal Irradiance, 940 nm(dirn7)