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California Weather Data: Station Description

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Description of UNION_CITY.A (CIMIS #171, Union City)

| Data: Daily ~ Averages |

Network:

CIMIS — California Irrigation Management Information System

Observer

Alameda County Water Dist.

Location

Town Estates Park
County: Alameda Nearest City: Union City
Latitude: 37 deg 36 min N Longitude: 122 deg 03 min W Elevation: 16 ft

Station and site characteristics

Manufacturer/model: Campbell Scientific CR10 or CR10X
Ground cover: Irrigated Turf, Soil type: Clay

Available data

UC IPM database records begin/end: February 5, 2001 / on-going
Reporting interval: Daily
Stored variables:
Air Temperature, max/min: Daily max/min measured at 1.5 m (4.92 ft).
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, average: Daily average measured at 2 m (6.5 ft).
Variables with computed averages: precip, air temp, soil temp, solar

Comments

Replaces station 100 (FREMONT.A) and is an ETo recording station. Station is located in an area that is free of obstruction to the northwest (windward) with some small obstructions - a line of palm trees over 100 feet away - to the south and east.

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)
When Installed:	05 February 2001
Status:	Active
Backup Station #1 / #2	SANJOSE.A / OAKLAND_FOOTHILLS.A
Averages Station Backup:	NEWARK.C

97% of possible values are stored for the period 02/05/2001 to 05/17/2013.

Evapotranspiration

Variable or Sensor:

Calculated from CIMIS hourly values.

98% of possible values are stored for the period 02/05/2001 to 05/17/2013.

Precipitation

Variable or Sensor:	Daily total measured in a 20 cm (8 in) diameter gauge.
Height of Sensor:	1 m (39 in)
When Installed:	05 February 2001
Status:	Active
Backup Station #1 / #2	SANJOSE.A / OAKLAND_FOOTHILLS.A
Averages Station Backup:	NEWARK.C

97% of possible values are stored for the period 02/05/2001 to 05/17/2013.

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)
When Installed:	05 February 2001
Status:	Active

98% of possible values are stored for the period 02/05/2001 to 05/17/2013.

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
When Installed:	05 February 2001
Status:	Active
Backup Station #1	SANJOSE.A

99% of possible values are stored for the period 02/05/2001 to 05/17/2013.

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)
When Installed:	05 February 1200
Status:	Active
Backup Station #1 / #2	SANJOSE.A / OAKLAND_FOOTHILLS.A
Averages Station Backup:	SANJOSE.A

96% of possible values are stored for the period 02/05/2001 to 05/17/2013.

Wind Speed/Direction, average

Variable or Sensor:	Daily average measured at 2 m (6.5 ft).
Height of Sensor:	2 m (6.5 ft)
When Installed:	05 February 2001
Status:	Active

100% of possible values are stored for the period 02/05/2001 to 05/17/2013.

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