Site description: On slope, near bottom Upper Lookout Cr; Habitat type Abam/Vaal/Coca
Map elevation: 1010 meters
(No GPS data for this point.)
Aspect: 282 degrees Slope: 11 degrees
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Measurement period:: 19710709 - Present
Comments:
Daily Variables:
09 Jul 1971 to 22 Dec 1972:
Mean, max, min sunrise to sunrise temperature
Mean daytime, mean nighttime temperature
22 Dec 1972 to 19 Jan 1981:
Mean sunrise to sunrise temperature
Mean, max daytime temperature
Mean, min nighttime temperature
19 Jan 1981 to 10 Feb 1987:
Mean, max, min sunrise to sunrise temperature
Mean daytime, mean nighttime temperature
10 Feb 1987 to 09 Apr 1998:
Mean, max, min daily (midnight to midnight) temperature
Mean, max, min daytime temperature
Mean, max, min nighttime temperature
Time of max, time of min for daily, daytime, nighttime
09 Apr 1998 to Present:
Mean, max, min daily (midnight to midnight) air temperature
Daily time of max, time of min
Fine Resolution Variables:
09 Apr 1998 to Present:
Mean hourly air temperature
Sensor height: 100 cm in summer, 300 cm in winter (approx. Oct-Apr)
200 cm (permanently located on 26 Jun 1987)
190 cm (repositioned 01 Oct 1991)
Notes: Before 22 Dec 1972, daytime length was determined for the 15th of the
month, and used for the entire month. After this time, an algorithm
was developed to determine daily day length. Changes in measured
temperature parameters were due to changes in the digitizing program
used to process chart data. All daily summaries are based on a
sunrise to sunrise day before 10 Feb 1987.
Beginning 10 Feb 1987, a true daily summary is available due to the use
of a revised digitizing program. The revised program produces output
similar to the CR10 dataloggers used for thermographs.
On 26 Jun 1987, a CR10 datalogger is installed. The Partlow chart
recorder was maintained until 04 Jun 1990 as a backup, and then removed.
Daytime/nighttime calculation discontinued on 9 April 1998.
PROBE 01:
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Measurement period:: 19710709 - Present
Comments:
Daily Variables:
09 Jul 1971 to 10 Feb 1987:
Mean sunrise to sunrise temperature only
10 Feb 1987 to 09 Apr 1998:
Mean, max, min daily (midnight to midnight) temperature
Mean, max, min daytime temperature
Mean, max, min nighttime temperature
Time of max, time of min for daily, daytime, nighttime
09 Apr 1998 to Present:
Mean, max, min daily (midnight to midnight) soil temperature
Daily time of max, time of min
Fine Resolution Variables:
09 Apr 1998 to Present:
Mean six-hourly soil temperature
Sensor depth: 20 cm
10, 20, 30 cm (after 26 Jun 1987)
Notes: Soil temperature was digitized on a sunrise to sunrise basis.
After 10 Feb 1987, a true daily summary is available due to the use
of a revised digitizing program. The revised program produces
output similar to the CR10 dataloggers used for thermographs.
On 26 Jun 1987, a CR10 datalogger is installed, and additional soil
depths at 10 and 30 cm are added. The Partlow chart recorder
was maintained until 04 Jun 1990 as a backup, and then removed.
PROBE 01: