SGP/EBBR/E7 - Pressure Too High

When data collection resumed after a missing period, the barometer pressure
had become very high, 102 kPa, which was not correct.  This condition resulted
from an incorrect calibration being used. Sensible heat flux was overestimated 
by about 4% and latent heat flux underestimated by about 4% because of the 
high pressure readings.

• Atmospheric pressure(mv_pres)

• ratio of sensible/latent heat fluxes (Bowen ratio)(bowen)
• Retrieved pressure profile(pres)
• h(h)
• latent heat flux(e)

• Retrieved pressure profile(pres)

SGP/EBBR/E7 - Data Missing

A power outage resulted in missing data for the indicated period.

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

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

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

SGP/EBBR/E7 - 6 Month Checks

Many measurements were incorrect while the AEM was positioned with both aspirators at the 
same height for comparison checks.

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

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

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

SGP/EBBR/E7  - Wind Speed Frozen Stopped By Ice Storm

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

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

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

• scalar wind speed(wind_s)

SGP/EBBR/E7  - Wind Speed Frozen Stopped By Ice

An ice storm froze the wind speed sensor to a stopped condition.

The wind speed and residual wind speed measurements are incorrect.

This sensor failure does not affect the sensible and latent heat fluxes.

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

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

• scalar wind speed(wind_s)

SGP/EBBR/E7 - Data Missing

Data was missing because of a communication problem.  However, previously
missing data from 10/07-18 was recovered from the EBRR storage module and ingested, 
thereby reducing the data lost period significantly.

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

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

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

SGP/EBBR/E7 - Net Radiation Incorrect; Sensible and Latent Heat Fluxes Incorrect

The top dome of the net radiometer was cracked; net radiation, and sensible and latent 
heat flux measurements were incorrect.

• Net radiation(mv_q)

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

• net radiation(q)

SGP/EBBR/E7 - metadata corrections

On 20050723, a series of metadata corrections and additions were completed.  These 
metadata changes apply to all EBBR.E7 data collected by ARM back to the installation of the 
instrument in May 1993. Please see the current metadata for correct information.  These 
changes do not affect data values or quality.	

The changes are summarized below:
1) Update of "sensor location" information
2) Addition of installation dates for the systems
3) Correction of soil moisture units (from "by volume" to "gravimetric")

• base time(base_time)

• base time(base_time)

• base time(base_time)

SGP/EBBR/E7 - Barometric Pressure Incorrect

The pressure measurement sometimes dropped to zero during daytime because of 
unstable battery voltage.

• Atmospheric pressure(mv_pres)

• Retrieved pressure profile(pres)

• Retrieved pressure profile(pres)

SGP/EBBR/E7 - Fluxes and Gradient Measurements Incorrect

The left AEM aspirator was not working during this period, resulting in incorrect gradient 
and flux measurements.

• Left relative humidity(mv_hum_l)
• Left air temperature(tair_l)
• Temperature of left humidity sensor chamber(rr_thum_l)

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

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

SGP/EBBR/E7 - Windspeed threshhold too high

The wind speed sensor developed worn bearings and therefore too high a starting 
threshhold.

The data user should compare the EBBR wind speed with the SMOS wind speed to detect 
periods when the EBBR wind speed threshhold caused poor data quality.

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

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

• scalar wind speed(wind_s)