In the mouth of the Alexander Valley.
County: Sonoma Nearest City: Healdsburg
Latitude: 38 deg 40 min N Longitude: 122 deg 52 min W Elevation: 180 ft

Station and site characteristics

Manufacturer/model: Campbell Scientific Inc. CR-10 ( or CR-10X)
Ground cover: Irrigated grass

Available data

UC IPM database records begin/end: April 1, 1987 / March 28, 1994
Reporting interval: Daily
Stored variables:
Air Temperature, max/min: Daily max/min measured at 1.5 m (4.92 ft).
Reference Evapotranspiration: Calculated from CIMIS hourly values.
Precipitation: Daily total measured in a 20 cm (8 in) diameter gauge.
Relative Humidity, max/min: Daily max/min relative humidity measured at 1.5 m (4.92 ft).
Soil Temperature, max/min: Daily max/min measured at a 15 cm (6 in) depth.
Solar Radiation: Daily global radiation measured by Licor pyranometer at 2 m (6.5 ft).
Wind Speed/Direction: Daily average measured at 2 m (6.5 ft).
Variables with computed averages: none

Comments

Located in a large pasture with no significant constraints.

Details about reported variables

Air Temperature, max/min

Variable or Sensor:	Daily max/min measured at 1.5 m (4.92 ft).
Height of Sensor:	1.5 m (4.92 ft)
Backup Station #1 / #2	WINDSOR.A / SNTAROSA.A
Averages Station Backup:	HELDSBRG.C

96% of possible values are stored for the period 04/01/1987 to 03/27/1994.

Reference Evapotranspiration

Variable or Sensor:

Calculated from CIMIS hourly values.

98% of possible values are stored for the period 04/01/1987 to 03/27/1994.

Precipitation

Variable or Sensor:	Daily total measured in a 20 cm (8 in) diameter gauge.
Backup Station #1 / #2	WINDSOR.A / SNTAROSA.A
Averages Station Backup:	HELDSBRG.C

93% of possible values are stored for the period 04/01/1987 to 03/27/1994.

Relative Humidity, max/min

Variable or Sensor:	Daily max/min relative humidity measured at 1.5 m (4.92 ft).
Height of Sensor:	1.5 m (4.92 ft)

100% of possible values are stored for the period 04/01/1987 to 03/27/1994.

Soil Temperature, max/min

Variable or Sensor:	Daily max/min measured at a 15 cm (6 in) depth.
Height of Sensor:	15 cm (6 in) depth
Backup Station #1 / #2	WINDSOR.A / SNTAROSA.A
Averages Station Backup:	WINDSOR.A

41% of possible values are stored for the period 04/01/1987 to 03/27/1994.

Solar Radiation

Variable or Sensor:	Daily global radiation measured by Licor pyranometer at 2 m (6.5 ft).
Height of Sensor:	2 m (6.5 ft)
Backup Station #1 / #2	WINDSOR.A / SNTAROSA.A
Averages Station Backup:	WINDSOR.A

93% of possible values are stored for the period 04/01/1987 to 03/27/1994.

Wind Speed/Direction

Variable or Sensor:	Daily average measured at 2 m (6.5 ft).
Height of Sensor:	2 m (6.5 ft)

99% of possible values are stored for the period 04/01/1987 to 03/27/1994.

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