SGP/EBBR - EBBR E18 Right Humidity Incorrect

After the 3 December 99 lightning strike, the humidity portion of the 
right T/RH probe drifted downwards at times, causing vapor pressure 
gradients to be incorrectly measured.  Therefore, sensible and latent
heat fluxes were also incorrect.  Since much of the data from the period
is missing (because of latent effects of the lightning strike), little
data is actually affected. 

The affected data values were:

5 minute:  hum_top, hum_bot, vp_top, vp_bot
15 minute: mv_hum_r
30 minute: hum_top, hum_bot, vp_top, vp_bot, bowen, h, e

• Right relative humidity(mv_hum_r)

• Bottom humidity(hum_bot)
• bottom vapor pressure(vp_bot)
• Top humidity(hum_top)
• top vapor pressure(vp_top)

• h(h)
• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• Bottom humidity(hum_bot)
• latent heat flux(e)
• Top humidity(hum_top)
• bottom vapor pressure(vp_bot)

SGP/EBBR - EBBR E18 Data Incorrect After Lightning Strike

Immediately after the 3 December 99 lightning strike, all data from this 
EBBR system was incorrect.  The system crashed at the end of this period.

• Top humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• scalar wind speed(wind_s)
• lon(lon)
• Bottom humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• lat(lat)
• top air temperature(tair_top)
• Temperature of the top humidity chamber(thum_top)
• Temperature of bottom humidity sensor chamber(thum_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• vector wind speed(res_ws)
• Dummy altitude for Zeb(alt)
• wind direction (relative to true north)(wind_d)
• Retrieved pressure profile(pres)
• Time offset of tweaks from base_time(time_offset)
• net radiation(q)
• Home signal(home)
• base time(base_time)
• bottom air temperature(tair_bot)

• lat(lat)
• Wind direction (relative to true north)(mv_wind_d)
• Home signal(mv_home)
• Dummy altitude for Zeb(alt)
• Reference temperature(rr_tref)
• Soil temperature 4(rr_ts4)
• Soil temperature 3(rr_ts3)
• base time(base_time)
• Soil temperature 1(rr_ts1)
• Right relative humidity(mv_hum_r)
• Left relative humidity(mv_hum_l)
• lon(lon)
• Left air temperature(tair_l)
• Soil moisture 1(r_sm1)
• Soil moisture 2(r_sm2)
• Soil moisture 3(r_sm3)
• Battery(bat)
• Time offset of tweaks from base_time(time_offset)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil moisture 4(r_sm4)
• Soil heat flow 1(mv_hft1)
• scalar wind speed(wind_s)
• Soil temperature 2(rr_ts2)
• Soil temperature 5(rr_ts5)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Net radiation(mv_q)
• Soil moisture 5(r_sm5)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 3(mv_hft3)
• Soil heat flow 2(mv_hft2)
• Signature(signature)
• Soil heat flow 5(mv_hft5)
• Right air temperature(tair_r)
• Atmospheric pressure(mv_pres)

• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Soil heat capacity 3(cs3)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• soil heat flow, site 2(g2)
• soil heat flow, site 4(g4)
• volumetric soil moisture, site 4(sm4)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 0-5 cm integrated soil temperature, site 2(ts1)
• Time offset of tweaks from base_time(time_offset)
• Temperature of the top humidity chamber(thum_top)
• h(h)
• Soil heat capacity 4(cs4)
• 5 cm soil heat flow, site 1(shf1)
• wind direction (relative to true north)(wind_d)
• 5 cm soil heat flow, site 2(shf2)
• 0-5 cm integrated soil temperature, site 2(ts2)
• volumetric soil moisture, site 1(sm1)
• soil heat flow, site 3(g3)
• 5 cm soil heat flow, site 5(shf5)
• vector wind speed(res_ws)
• average surface soil heat flow(ave_shf)
• net radiation(q)
• Soil heat capacity 1(cs1)
• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• 0-5 cm integrated soil temperature, site 4(ts4)
• lat(lat)
• lon(lon)
• Bottom humidity(hum_bot)
• 5 cm soil heat flow, site 4(shf4)
• Reference Thermistor Temperature(tref)
• Temperature of bottom humidity sensor chamber(thum_bot)
• volumetric soil moisture, site 2(sm2)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• latent heat flux(e)
• Soil heat capacity 5(cs5)
• scalar wind speed(wind_s)
• Dummy altitude for Zeb(alt)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 2(cs2)
• 5 cm soil heat flow, site 3(shf3)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Top humidity(hum_top)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• volumetric soil moisture, site 5(sm5)
• Retrieved pressure profile(pres)
• soil heat flow, site 5(g5)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• base time(base_time)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• bottom air temperature(tair_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• soil heat flow, site 1(g1)
• volumetric soil moisture, site 3(sm3)

SGP/EBBR - EBBR E18 Much Data Missing After Lightning Strike

On 3 December 99 this EBBR system was struck by lightning.  Much of the 
data from this EBBR system for the stated period is missing.

• Top humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• scalar wind speed(wind_s)
• lon(lon)
• Bottom humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• lat(lat)
• top air temperature(tair_top)
• Temperature of the top humidity chamber(thum_top)
• Temperature of bottom humidity sensor chamber(thum_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• vector wind speed(res_ws)
• Dummy altitude for Zeb(alt)
• wind direction (relative to true north)(wind_d)
• Retrieved pressure profile(pres)
• Time offset of tweaks from base_time(time_offset)
• net radiation(q)
• Home signal(home)
• base time(base_time)
• bottom air temperature(tair_bot)

• lat(lat)
• Wind direction (relative to true north)(mv_wind_d)
• Home signal(mv_home)
• Dummy altitude for Zeb(alt)
• Reference temperature(rr_tref)
• Soil temperature 4(rr_ts4)
• Soil temperature 3(rr_ts3)
• base time(base_time)
• Soil temperature 1(rr_ts1)
• Right relative humidity(mv_hum_r)
• Left relative humidity(mv_hum_l)
• lon(lon)
• Left air temperature(tair_l)
• Soil moisture 1(r_sm1)
• Soil moisture 2(r_sm2)
• Soil moisture 3(r_sm3)
• Battery(bat)
• Time offset of tweaks from base_time(time_offset)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil moisture 4(r_sm4)
• Soil heat flow 1(mv_hft1)
• scalar wind speed(wind_s)
• Soil temperature 2(rr_ts2)
• Soil temperature 5(rr_ts5)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Net radiation(mv_q)
• Soil moisture 5(r_sm5)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 3(mv_hft3)
• Soil heat flow 2(mv_hft2)
• Signature(signature)
• Soil heat flow 5(mv_hft5)
• Right air temperature(tair_r)
• Atmospheric pressure(mv_pres)

• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Soil heat capacity 3(cs3)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• soil heat flow, site 2(g2)
• soil heat flow, site 4(g4)
• volumetric soil moisture, site 4(sm4)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 0-5 cm integrated soil temperature, site 2(ts1)
• Time offset of tweaks from base_time(time_offset)
• Temperature of the top humidity chamber(thum_top)
• h(h)
• Soil heat capacity 4(cs4)
• 5 cm soil heat flow, site 1(shf1)
• wind direction (relative to true north)(wind_d)
• 5 cm soil heat flow, site 2(shf2)
• 0-5 cm integrated soil temperature, site 2(ts2)
• volumetric soil moisture, site 1(sm1)
• soil heat flow, site 3(g3)
• 5 cm soil heat flow, site 5(shf5)
• vector wind speed(res_ws)
• average surface soil heat flow(ave_shf)
• net radiation(q)
• Soil heat capacity 1(cs1)
• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• 0-5 cm integrated soil temperature, site 4(ts4)
• lat(lat)
• lon(lon)
• Bottom humidity(hum_bot)
• 5 cm soil heat flow, site 4(shf4)
• Reference Thermistor Temperature(tref)
• Temperature of bottom humidity sensor chamber(thum_bot)
• volumetric soil moisture, site 2(sm2)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• latent heat flux(e)
• Soil heat capacity 5(cs5)
• scalar wind speed(wind_s)
• Dummy altitude for Zeb(alt)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 2(cs2)
• 5 cm soil heat flow, site 3(shf3)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Top humidity(hum_top)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• volumetric soil moisture, site 5(sm5)
• Retrieved pressure profile(pres)
• soil heat flow, site 5(g5)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• base time(base_time)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• bottom air temperature(tair_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• soil heat flow, site 1(g1)
• volumetric soil moisture, site 3(sm3)

SGP/EBBR - EBBR E18 Net Radiation Incorrect

The net radiometer top dome was broken and water had entered.  Net 
radiation values are therefore incorrect during the period.

The affected data are:

5 minute:  q
15 minute: mv_q
30 minute: q, h, e

• net radiation(q)

• Net radiation(mv_q)

• h(h)
• net radiation(q)
• latent heat flux(e)

SGP/EBBR/E18 - Left RH Probe Temperature Incorrect

The left humidity probe temperature produced incorrect values from the time
of installation of the E18 EBBR until 23 October at 1700 GMT because of a
poor connection.

• Temperature of left humidity sensor chamber(rr_thum_l)
• Temperature of right humidity sensor chamber(rr_thum_r)

• Temperature of bottom humidity sensor chamber(thum_bot)
• Temperature of the top humidity chamber(thum_top)

SGP/EBBR/E18 - 3 Month Check

During EBBR 3 month checks the Automatic Exchange Mechanism is disabled
(reflected by home signals near zero) so that the two aspirator units can be
placed at the same height.  The measurements during these periods 
do not produce correct outputs of bowen ratio (bowen), sensible heat flux
(h), or latent heat flux (e), nor do the air temperature and relative 
humidity measurements indicate correct gradients.  Checks performed before 
or after the AEM is disabled also lead to some incorrect data.  Incorrect 5,
15 minute and half hour data occurs for the period above.

• Bottom humidity(hum_bot)
• Top humidity(hum_top)
• top vapor pressure(vp_top)
• top air temperature(tair_top)
• Temperature of the top humidity chamber(thum_top)
• bottom vapor pressure(vp_bot)
• bottom air temperature(tair_bot)
• Temperature of bottom humidity sensor chamber(thum_bot)

• Temperature of left humidity sensor chamber(rr_thum_l)
• Right relative humidity(mv_hum_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left relative humidity(mv_hum_l)
• Right air temperature(tair_r)
• Left air temperature(tair_l)

• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom vapor pressure(vp_bot)
• top air temperature(tair_top)
• Bottom humidity(hum_bot)
• Temperature of bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• latent heat flux(e)
• Temperature of the top humidity chamber(thum_top)
• h(h)
• Top humidity(hum_top)

SGP/EBBR/E18 - Six Month Checks

During EBBR 6 month checks (formally called 3 month checks) the Automatic 
Exchange Mechanism is disabled (reflected by home signals near zero) so that
the two aspirator units can be placed at the same height.  The measurements
during these periods do not produce correct outputs of bowen ratio (bowen), 
sensible heat flux (h), or latent heat flux (e), nor do the air temperature
and relative humidity measurements indicate correct gradients.  Checks 
performed just before or after the AEM is disabled also lead to some 
incorrect data.  Incorrect 5, 15 minute and half hour data occurs for the 
period above.

• Bottom humidity(hum_bot)
• Top humidity(hum_top)
• top vapor pressure(vp_top)
• top air temperature(tair_top)
• Temperature of the top humidity chamber(thum_top)
• bottom vapor pressure(vp_bot)
• bottom air temperature(tair_bot)
• Temperature of bottom humidity sensor chamber(thum_bot)

• Temperature of left humidity sensor chamber(rr_thum_l)
• Right relative humidity(mv_hum_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Left relative humidity(mv_hum_l)
• Right air temperature(tair_r)
• Left air temperature(tair_l)

• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• bottom vapor pressure(vp_bot)
• top air temperature(tair_top)
• Bottom humidity(hum_bot)
• Temperature of bottom humidity sensor chamber(thum_bot)
• bottom air temperature(tair_bot)
• latent heat flux(e)
• Temperature of the top humidity chamber(thum_top)
• h(h)
• Top humidity(hum_top)

SGP/EBBR/E18 - Reprocess: E18 EBBR Net Radiometer Calibration

When the CR10 program was loaded in the storage module of the newly 
installed EBBR unit at E18 on 10 September 1997, an incorrect 
calibration for the net radiometer was present.  The incorrect calibration
had apparently been entered into the storage module by the vendor before
the unit was shipped.  The .DOC file showed the correct calibration; 
therefore, we did not suspect a problem until comparisons with 
radiometers at other sites nearby were performed.  The program with the 
correct calibration was entered on 18 June 1998.  The 15 minute mv_q 
values were not affected.  The 5 and 30 minute q values during the period
above need to be corrected; multiply positive q values by 0.684, multiply 
negative values by 0.811; Sensible (h) and Latent Heat (e) fluxes for the
period need to be recalculated with the equations below.

e = -(q + ave_shf)/(1 + bowen)

h = -(e + ave_shf + q)

• Top humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• wind direction (relative to true north)(wind_d)
• Retrieved pressure profile(pres)
• Time offset of tweaks from base_time(time_offset)
• scalar wind speed(wind_s)
• lon(lon)
• net radiation(q)
• Bottom humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• Home signal(home)
• lat(lat)
• top air temperature(tair_top)
• Temperature of the top humidity chamber(thum_top)
• base time(base_time)
• bottom air temperature(tair_bot)
• Temperature of bottom humidity sensor chamber(thum_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• vector wind speed(res_ws)
• Dummy altitude for Zeb(alt)

• Soil heat capacity 1(cs1)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• top vapor pressure(vp_top)
• Soil heat capacity 3(cs3)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• lon(lon)
• lat(lat)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Bottom humidity(hum_bot)
• soil heat flow, site 2(g2)
• soil heat flow, site 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• volumetric soil moisture, site 4(sm4)
• 5 cm soil heat flow, site 4(shf4)
• Reference Thermistor Temperature(tref)
• Temperature of bottom humidity sensor chamber(thum_bot)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• volumetric soil moisture, site 2(sm2)
• 0-5 cm integrated soil temperature, site 2(ts1)
• latent heat flux(e)
• Time offset of tweaks from base_time(time_offset)
• Temperature of the top humidity chamber(thum_top)
• Soil heat capacity 5(cs5)
• scalar wind speed(wind_s)
• h(h)
• Dummy altitude for Zeb(alt)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 2(cs2)
• 5 cm soil heat flow, site 3(shf3)
• Top humidity(hum_top)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Soil heat capacity 4(cs4)
• volumetric soil moisture, site 5(sm5)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• Retrieved pressure profile(pres)
• soil heat flow, site 5(g5)
• 5 cm soil heat flow, site 1(shf1)
• wind direction (relative to true north)(wind_d)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 5 cm soil heat flow, site 2(shf2)
• base time(base_time)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• volumetric soil moisture, site 1(sm1)
• soil heat flow, site 3(g3)
• bottom air temperature(tair_bot)
• 5 cm soil heat flow, site 5(shf5)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• vector wind speed(res_ws)
• soil heat flow, site 1(g1)
• average surface soil heat flow(ave_shf)
• volumetric soil moisture, site 3(sm3)
• net radiation(q)

SGP/EBBR/E18 - Water In Net Radiometer, Flux Data Incorrect

Incorrect Net Radiation values resulted from water in the bottom dome.
Thus incorrect sensible and latent heat fluxes resulted. Affected values
are:

5 minute:   q
15 minute:  mv_q
30 minute:  q, e, h

• net radiation(q)

• Net radiation(mv_q)

• h(h)
• net radiation(q)
• latent heat flux(e)

SGP/EBBR/E18 - Wind Direction Data Incorrect (revised)

The wind direction sensor was iced stopped by freezing rain, 
resulting in the following values being incorrect:

5 minute:  res_ws, wind_d, sigma_wd
15 minute: mv_wind_d
30 minute: res_ws, wind_d, sigma_wd

• Wind direction (relative to true north)(mv_wind_d)

• standard deviation of wind direction (sigma theta)(sigma_wd)
• wind direction (relative to true north)(wind_d)
• vector wind speed(res_ws)

• null(Raw data stream - documentation not supported)

• vector wind speed(res_ws)
• wind direction (relative to true north)(wind_d)
• standard deviation of wind direction (sigma theta)(sigma_wd)

SGP/EBBR - EBBR E18 Wind Speed Data Incorrect

The wind speed sensor was iced stopped by freezing rain, 
resulting in the following values being incorrect:

5 minute:  wind_s, res_ws
15 minute: wind_s
30 minute: wind_s, res_ws,

• Top humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• scalar wind speed(wind_s)
• lon(lon)
• Bottom humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• lat(lat)
• top air temperature(tair_top)
• Temperature of the top humidity chamber(thum_top)
• Temperature of bottom humidity sensor chamber(thum_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• vector wind speed(res_ws)
• Dummy altitude for Zeb(alt)
• wind direction (relative to true north)(wind_d)
• Retrieved pressure profile(pres)
• Time offset of tweaks from base_time(time_offset)
• net radiation(q)
• Home signal(home)
• base time(base_time)
• bottom air temperature(tair_bot)

• lat(lat)
• Wind direction (relative to true north)(mv_wind_d)
• Home signal(mv_home)
• Dummy altitude for Zeb(alt)
• Reference temperature(rr_tref)
• Soil temperature 4(rr_ts4)
• Soil temperature 3(rr_ts3)
• base time(base_time)
• Soil temperature 1(rr_ts1)
• Right relative humidity(mv_hum_r)
• Left relative humidity(mv_hum_l)
• lon(lon)
• Left air temperature(tair_l)
• Soil moisture 1(r_sm1)
• Soil moisture 2(r_sm2)
• Soil moisture 3(r_sm3)
• Battery(bat)
• Time offset of tweaks from base_time(time_offset)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Soil moisture 4(r_sm4)
• Soil heat flow 1(mv_hft1)
• scalar wind speed(wind_s)
• Soil temperature 2(rr_ts2)
• Soil temperature 5(rr_ts5)
• Temperature of left humidity sensor chamber(rr_thum_l)
• Net radiation(mv_q)
• Soil moisture 5(r_sm5)
• Soil heat flow 4(mv_hft4)
• Soil heat flow 3(mv_hft3)
• Soil heat flow 2(mv_hft2)
• Signature(signature)
• Soil heat flow 5(mv_hft5)
• Right air temperature(tair_r)
• Atmospheric pressure(mv_pres)

• null(Raw data stream - documentation not supported)

• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• Soil heat capacity 3(cs3)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• soil heat flow, site 2(g2)
• soil heat flow, site 4(g4)
• volumetric soil moisture, site 4(sm4)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• 0-5 cm integrated soil temperature, site 2(ts1)
• Time offset of tweaks from base_time(time_offset)
• Temperature of the top humidity chamber(thum_top)
• h(h)
• Soil heat capacity 4(cs4)
• 5 cm soil heat flow, site 1(shf1)
• wind direction (relative to true north)(wind_d)
• 5 cm soil heat flow, site 2(shf2)
• 0-5 cm integrated soil temperature, site 2(ts2)
• volumetric soil moisture, site 1(sm1)
• soil heat flow, site 3(g3)
• 5 cm soil heat flow, site 5(shf5)
• vector wind speed(res_ws)
• average surface soil heat flow(ave_shf)
• net radiation(q)
• Soil heat capacity 1(cs1)
• top vapor pressure(vp_top)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• 0-5 cm integrated soil temperature, site 4(ts4)
• lat(lat)
• lon(lon)
• Bottom humidity(hum_bot)
• 5 cm soil heat flow, site 4(shf4)
• Reference Thermistor Temperature(tref)
• Temperature of bottom humidity sensor chamber(thum_bot)
• volumetric soil moisture, site 2(sm2)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• latent heat flux(e)
• Soil heat capacity 5(cs5)
• scalar wind speed(wind_s)
• Dummy altitude for Zeb(alt)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 2(cs2)
• 5 cm soil heat flow, site 3(shf3)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Top humidity(hum_top)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• volumetric soil moisture, site 5(sm5)
• Retrieved pressure profile(pres)
• soil heat flow, site 5(g5)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• base time(base_time)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• bottom air temperature(tair_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• soil heat flow, site 1(g1)
• volumetric soil moisture, site 3(sm3)

SGP/EBBR/E18 - Wind Speed Data Incorrect

The wind speed sensor was iced stopped by freezing rain, 
resulting in the following values being incorrect:

5 minute:  wind_s, res_ws
15 minute: wind_s
30 minute: wind_s, res_ws,

• scalar wind speed(wind_s)
• vector wind speed(res_ws)

• scalar wind speed(wind_s)

• null(Raw data stream - documentation not supported)

• scalar wind speed(wind_s)
• vector wind speed(res_ws)

SGP/EBBR/E18 - Wind Speed Data Incorrect

The wind speed sensor was iced stopped by freezing rain, 
resulting in the following values being incorrect:

5 minute:  wind_s, res_ws
15 minute: wind_s
30 minute: wind_s, res_ws,

• scalar wind speed(wind_s)
• vector wind speed(res_ws)

• scalar wind speed(wind_s)

• null(Raw data stream - documentation not supported)

• scalar wind speed(wind_s)
• vector wind speed(res_ws)

SGP/EBBR/E18 - Pressure Incorrect

The pressure sensor was replaced at E18 EBBR without the replacement being
noted by Site Ops and therefore without an indication of serial number and
thus correct calibration. The serial number of the sensor was observed 
during a PM (after months of confusion concerning the thing) and a several
month search for the calibration sheet at ANL, the CF, and the manufacturer
ensued.  The sheet was finally found and I confirmed that an incorrect
offset was being used (the same as used for the previous sensor). This is
an easy error to make as there are two models of pressure sensors (with
different calibration ranges) being used in the EBBR systems.  On June
17, 1999 the correct offset was entered into the CR10 and storage module
programming.  The pressure for the period should be increased by 6.757 kPa.
The result of the error is that Bowen ratio was underestimated by 6.8% on
average, Latent Heat Flux was overestimated by 3.6% on average, and Sensible
Heat Flux was underestimated by 3.6% on average.  The errors in the fluxes 
are smaller than the estimated 10% error in the Bowen ratio flux 
measurement technique and therefore the data does not need to be reprocessed.
Anyone performing area averages of pressure or looking at the variation in 
pressure over the CART Site should adjust the E18 EBBR pressure values for this
period using the offset error indicated above.

• Top humidity(hum_top)
• top vapor pressure(vp_top)
• bottom vapor pressure(vp_bot)
• wind direction (relative to true north)(wind_d)
• Retrieved pressure profile(pres)
• Time offset of tweaks from base_time(time_offset)
• scalar wind speed(wind_s)
• lon(lon)
• net radiation(q)
• Bottom humidity(hum_bot)
• Reference Thermistor Temperature(tref)
• Home signal(home)
• lat(lat)
• top air temperature(tair_top)
• Temperature of the top humidity chamber(thum_top)
• base time(base_time)
• bottom air temperature(tair_bot)
• Temperature of bottom humidity sensor chamber(thum_bot)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• vector wind speed(res_ws)
• Dummy altitude for Zeb(alt)

• null(Raw data stream - documentation not supported)

• Soil heat capacity 1(cs1)
• 5 cm soil heat flow corrected for soil moisture content, site 5(c_shf5)
• top vapor pressure(vp_top)
• Soil heat capacity 3(cs3)
• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• 5 cm soil heat flow corrected for soil moisture content, site 3(c_shf3)
• 5 cm soil heat flow corrected for soil moisture content, site 1(c_shf1)
• top air temperature(tair_top)
• bottom vapor pressure(vp_bot)
• 5 cm soil heat flow corrected for soil moisture content, site 2(c_shf2)
• lon(lon)
• lat(lat)
• 0-5 cm integrated soil temperature, site 4(ts4)
• Bottom humidity(hum_bot)
• soil heat flow, site 2(g2)
• soil heat flow, site 4(g4)
• 5 cm soil heat flow corrected for soil moisture content, site 4(c_shf4)
• volumetric soil moisture, site 4(sm4)
• 5 cm soil heat flow, site 4(shf4)
• Reference Thermistor Temperature(tref)
• Temperature of bottom humidity sensor chamber(thum_bot)
• Exchange mechanism position indicator (15 to 30 min)(home_30)
• volumetric soil moisture, site 2(sm2)
• 0-5 cm integrated soil temperature, site 2(ts1)
• latent heat flux(e)
• Time offset of tweaks from base_time(time_offset)
• Temperature of the top humidity chamber(thum_top)
• Soil heat capacity 5(cs5)
• scalar wind speed(wind_s)
• h(h)
• Dummy altitude for Zeb(alt)
• 0-5 cm integrated soil temperature, site 5(ts5)
• 0-5 cm change in soil heat storage with time, site 5(ces5)
• Soil heat capacity 2(cs2)
• 5 cm soil heat flow, site 3(shf3)
• Top humidity(hum_top)
• 0-5 cm integrated soil temperature, site 3(ts3)
• Soil heat capacity 4(cs4)
• volumetric soil moisture, site 5(sm5)
• 0-5 cm change in soil heat storage with time, site 3(ces3)
• Retrieved pressure profile(pres)
• soil heat flow, site 5(g5)
• 5 cm soil heat flow, site 1(shf1)
• wind direction (relative to true north)(wind_d)
• 0-5 cm change in soil heat storage with time, site 2(ces2)
• 0-5 cm change in soil heat storage with time, site 2(ces1)
• 0-5 cm integrated soil temperature, site 2(ts2)
• 5 cm soil heat flow, site 2(shf2)
• base time(base_time)
• 0-5 cm change in soil heat storage with time, site 4(ces4)
• volumetric soil moisture, site 1(sm1)
• soil heat flow, site 3(g3)
• bottom air temperature(tair_bot)
• 5 cm soil heat flow, site 5(shf5)
• standard deviation of wind direction (sigma theta)(sigma_wd)
• Exchange mechanism position indicator (0 to 15 min)(home_15)
• vector wind speed(res_ws)
• soil heat flow, site 1(g1)
• average surface soil heat flow(ave_shf)
• volumetric soil moisture, site 3(sm3)
• net radiation(q)