LTER Weather Station - Raw Hourly Weather — Research Context

Data in the KBS LTER core database may not be published without written permission of the lead investigator or project director Full terms of use

Raw hourly observations from the LTER weather station. These data are not checked.

This datatable is part of the LTER Meteorological Stations dataset.

Meteorological data have been collected on the LTER main site since 1988.

Originally, wind direction and speed, total solar radiation, net solar radiation, rainfall, air temperature, and relative humidity were recorded hourly in connection with measurements of evapotranspiration and deep percolation from a 6 m2 in-ground weighing lysimeter. The lysimeter and fetch area were planted to continuous alfalfa.

Although the lysimeter is no longer in operation, weather data collection continues. Precipitation was measured with a tipping bucket rain gauge until fall of 1997, when it was replaced with a weighing bucket rain gauge. In 2007 the belford rain gauge was replaced by a NOAH IV weighing bucket gage. All other sensors are electronic, connected to a data logger that is polled remotely. Instruments to measure wind speed and direction are mounted on a tower at 10 m. Light sensors (net solar radiation and photosynthetically active radiation) a thermometer, and an RH probe (with a built-in thermometer) are mounted at about 3 m. Soil moisture and temperature are monitored near the base of the tower.


Experiment: Research Context
Data available from: November 1992 to December 2021
Dataset: KBS002
Datatable ID: KBS002-007.121
Repository link:
Related Tables:
Last Updated 2023-12-08
Variate Description Units
datetime utc date and hour of the observation in UTC
PAR AVG photosynthetically active radiation
SolRad AVG solar radiation
WIND SPEED wind speed
WIND DIRECTION wind direction (0-360 degrees) weighted by wind speed
RH relative humidity (measured with an HMP45C) %
AH absolute humidity (measured with an HMP45C)
AirTmp 107 avg air temperature at 2 meters (measured with a Campbell 107 temperature probe)
Barometer AVG barometer
rain mm Precipitation as measured by the tipping bucket raingauge. This is not accurate when the temperature is below freezing.

Data Excerpt

datetime_utc par_avg solrad_avg wind_speed wind_direction rh ah airtmp_107_avg barometer_avg rain_mm
2023-12-08 12:00:00 +0000 7.43 0.0 3.4 178.77 77.5 0.7 4.9 974.0 0.0
2023-12-08 11:00:00 +0000 7.4 0.0 3.24 176.39 78.4 0.7 4.9 974.2 0.0
2023-12-08 10:00:00 +0000 7.4 0.0 3.28 176.13 80.5 0.7 5.0 975.0 0.0
2023-12-08 09:00:00 +0000 7.11 0.0 2.95 164.98 83.3 0.7 4.5 975.0 0.0
2023-12-08 08:00:00 +0000 7.18 0.0 2.66 168.9 83.1 0.7 4.5 975.0 0.0
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