SGP/EBBR/E2 - Wind Speed Sensor Frozen Stopped

Freezing rain froze the wind speed sensor to a stopped condition.

• scalar wind speed(wind_s)

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

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

SGP/EBBR/E2 - Missing data

Data are missing and unrecoverable

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

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

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

SGP/EBBR/E2 - Windspeed sensor failure

The windspeed sensor developed an abnormally high wind speed threshold due to worn 
bearings.

Wind speeds were often measured to be too low.  Inspect the data to identify suspect time 
periods.

• scalar wind speed(wind_s)

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

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

SGP/EBBR/E2 - Net Radiation and Fluxes Incorrect

The net radiometer was tipped 37 degrees eastward, resulting in apparent
solar noon being 2.5 hours early.  The net radiation error results in incorrect sensible 
and latent heat fluxes.

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

• Net radiation(mv_q)

• net radiation(q)

SGP/EBBR/E2 - AEM Ventilator Dangling - Sensible and Latent Heat Fluxes Incorrect

The right AEM ventilator unit with temperature and humidity sensors inside was dangling 
from the AEM.  Therefore, the gradients of temperature and relative humidity and thus 
sensible and latent heat flux are suspect for this period.  Often, the fluxes look reasonable.

• Right air temperature(tair_r)
• Temperature of right humidity sensor chamber(rr_thum_r)
• Right relative humidity(mv_hum_r)

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

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