Lake Tahoe
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Measurements

Measurements are made from 4 permanently moored buoys referred to as TB1, TB2, TB3 and TB4 and also the US Coast Guard Station on the north west shore. Figure 1 shows the current location of the measurement sites on a map. The table below shows the measurements made at each of the buoys and at the US Coast Guard Stations.

Map Key Latitude (N) Longitude (W) Measurement
US Coast Guard 39 10.838 120 07.157 v,  WD, Ps, SRu, SRd, AOD, ToV, TSI
TB1 39 09.180 120 00.020 Tr, Ts, Ts, Ts, Ts, v,  WD, Ps, AT, RH, NR
TB2 39 09.290 120 00.020 Tr, Ts, Ts, Ts, Ts, v,  WD, Ps, AT, RH, NR
TB3 39 08.300 120 04.920 Tr, Ts, Ts, Ts, Ts, v,  WD, Ps, AT, RH, NR
TB4 39 09.300 120 04.330 Tr, Ts, Ts, Ts, Ts, v,  WD, Ps, AT, RH, NR

 

LR – Longwave Radiation (u-upward looking, d-downward looking), SR – Shortwave Radiation (u-upward looking, d-downward looking), v – Wind Speed, WD – Wind Direction, Ps – Pressure, AT - Air Temperature, RH - Relative Humidity, NR - Net Radiation, AOD - Aerosol Optical Depth, ToV -  Total Column Water Vapor, TSI - Total Sky Imager, Tr - Temperature from radiometer, Ts - Skin temperature measured 1cm below skin by thermistor.

The two southern buoys were moved slightly further south in 2002. The table below gives the position of the buoys since installation at Lake Tahoe.

 

Buoy 05-07-1999 to 10-23-2014 05-07-1999 to 07-27-2015 05-07-1999 to 11-02-2002 11-02-2002 to present 06-16-1999 to 10-31-2002 10-31-2002 to present 07-27-2015 to 06-28-2019 06-29-2019 to 10-14-2019 07-27-2015 to present 10-14-2019 to present
TB1   39.153000, -120.000333             39.155111, -120.004128  
TB2     39.138200, -120.000300 39.108767, -120.006167            
TB3         39.138333, -120.082000 39.111983, -120.070617        
TB4 39.155417, -120.070750       39.155928, -120.070240 39.178687, -120.103653   39.155481, -120.070740