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Monthly Summaries of Soil Temperature and Soil Moisture in China

Summary

This data set contains soil temperature and soil moisture data from nine sites in China. Temporal coverage varies by station; the earliest record is from June 1998, and the latest is from May 2002. Data from individual stations are available in tab-delimited ASCII text files. An Excel spreadsheet contains the same data compiled together in a single file. NSIDC currently provides these summary data via FTP; the full soil temperature and moisture data set is available from Ron Paetzold, USDA.

Citing These Data:

Paetzold, R., ed. 2003. Monthly Summaries of Soil Temperature and Soil Moisture at Sites in China. Boulder, CO: National Snow and Ice Data Center. Digital Media.

Overview Table

Category Description
Data format

Data from individual stations are available in tab-delimited ASCII text files. An Excel spreadsheet contains the same data compiled together in a single file.

Spatial coverage

Data were collected from nine sites in China. No data are available from a tenth site (China 6) provided with this data set.

Temporal coverage

Temporal coverage varies by station; the earliest record is from June 1998, and the latest is from May 2002.

File naming convention

ggd625_*.txt: Data from individual stations
ggd625_china_soiltemp.xls: Excel spreadsheet with data from all stations

File size

File sizes range from 9 KB to 628 KB.

Parameter(s)

Each site provides soil temperature (°C) and soil moisture (volumetric) data. Sites may also contain some of the following variables:

  • Soil temperature (°C)
  • Soil moisture (volumetric)
  • Air temperature (°C)
  • Wind speed (m/s)
  • Wind direction (° true North)
  • Relative humidity (%)
  • Total rainfall accumulation (mm)
  • Soil heat flux (W/m2)
Procedures for obtaining data

NSIDC currently provides these summary data via FTP. The full soil temperature and moisture data set is available from Ron Paetzold, USDA.

Table of Contents

1. Contacts and Acknowledgments
2. Detailed Data Description
3. Document Information

1. Contacts and Acknowledgments:

Investigator(s) Name and Title:

Ron F. Paetzold
U.S. Department of Agriculture
Natural Resources Conservation Service
Lincoln, NE  68505

Chien-Lu Ping
University of Alaska at Fairbanks
Palmer Research Center
Palmer, AK  99645

Zhao Lin
Cold and Arid Regions Environmental and Engineering Research Institute
Chinese Academy of Sciences
260 Donggang West Road
Lanzhou, Gansu 730000
People's Republic of China

Technical Contact:

NSIDC User Services
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449  USA
phone: +1 303.492.6199
fax: +1 303.492.2468
form: Contact NSIDC User Services
e-mail: nsidc@nsidc.org

2. Detailed Data Description:

A Campbell Scientific CR10X-2M datalogger records day, time, battery (voltage), and internal temperature. A combination of the following below-ground sensors are attached to the datalogger: Vitel Hydra dielectric constant soil moisture and temperature sensors, Campbell 107 soil temperature sensors, MRC soil temperature probes, and International Thermal Instrument heat flux sensors.

Some sites have above-ground sensors at various heights, including Vaisala HMP45C air temperature and relative humidity sensors, TE525 rain gauges, EKO MR21 albedo sensors, and Epply PIR infrared sensors.

See Active-Layer Depths for a table of active-layer depths and graphs of soil temperature profiles from all nine stations.

See Soil Characteristics for a summary of soils throughout the study area.

Format:

Each of the nine station files reporting data contains average, median, standard deviation, maximum, and minimum values for the variables listed in the following documents:

China 1 (Fenghuoshan station)
China 2 (Ecology station)
China 3 (Wuli site)
China 4 (Two rivers, lower)
China 5 (Two rivers, upper)
China 6 (Kunlun basin): No data available
China 7 (Glacier station)
China 8 (Da Xi Gou, Glacier station)
China 9 (Deep borehole site)
China 10 (Shallow borehole site)

Sample Data Record:

Following is the first record from "ggd625_tworivers_lower.txt":

Two Rivers (lower)																																										
"Qinghai, China"																																										
China 4		BATT	INT	AIR	Max	Min	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	SOIL T	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel	Vitel
		VOLT	TEMP	TEMP	Air T	Air T	1 cm	15 cm	28 cm	36 cm	50 cm	60 cm	70 cm	80 cm	90 cm	95 cm	105 cm	120 cm	3 cm	3 cm	15 cm	15 cm	28 cm	28 cm	36 cm	36 cm	50 cm	50 cm	60 cm	60 cm	70 cm	70 cm	80 cm	80 cm	90 cm	90 cm	95 cm	95 cm	105 cm	105 cm	120 cm	120 cm
			deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v	deg C	H2O v/v
"October, 1999"																																										
Average		13.46	1.62	-1.67	-0.80	-2.58	2.00	1.72	1.46	1.24	0.79	0.52	0.15	0.00	-0.09	7.66	-0.07	-0.25	1.92	0.39	1.50	0.48	1.53	0.46	1.33	0.48	1.05	0.43	0.79	0.43	0.53	0.41	0.26	0.41	0.18	0.39	0.17	0.30	0.11	0.16	0.05	0.17
Median		13.20	0.65	-1.65	-0.82	-2.44	0.35	1.30	1.13	1.00	0.61	0.40	0.10	-0.03	-0.09	8.17	-0.07	-0.25	0.96	0.41	0.97	0.47	1.12	0.44	1.04	0.48	0.82	0.43	0.66	0.43	0.46	0.41	0.23	0.41	0.16	0.39	0.16	0.32	0.11	0.16	0.05	0.17
Std Dev		0.40	5.40	4.29	4.49	4.17	3.51	1.52	1.21	0.96	0.66	0.43	0.25	0.08	0.02	8.96	0.01	0.01	2.12	0.05	1.46	0.04	1.19	0.03	0.98	0.01	0.73	0.00	0.46	0.00	0.29	0.00	0.14	0.00	0.07	0.01	0.03	0.04	0.02	0.01	0.01	0.00
Max		14.23	13.68	8.61	10.44	7.84	14.50	5.37	3.73	2.97	1.87	1.21	0.56	0.13	-0.05	26.24	-0.04	-0.23	9.30	0.41	5.24	0.54	4.08	0.50	3.36	0.49	2.45	0.43	1.61	0.43	1.02	0.41	0.49	0.41	0.29	0.39	0.21	0.35	0.13	0.17	0.06	0.18
Min		12.96	-12.20	-15.77	-15.30	-16.37	-3.33	-0.01	0.01	0.05	-0.04	-0.03	-0.19	-0.09	-0.12	-0.23	-0.10	-0.27	-1.14	0.11	-0.04	0.43	0.19	0.42	0.18	0.47	0.16	0.43	0.23	0.43	0.16	0.41	0.08	0.41	0.09	0.36	0.13	0.22	0.08	0.14	0.03	0.16

File Naming Convention:

The following files are ASCII text versions of data from individual stations:

ggd625_da_xi_gou.txt
ggd625_deep_borehole.txt
ggd625_ecology_station.txt
ggd625_fenghuoshan.txt
ggd625_glacier_station.txt
ggd625_shallow_borehole.txt
ggd625_tworivers_lower.txt
ggd625_tworivers_upper.txt
ggd625_wuli.txt

The file "ggd625_china_soiltemp.xls" is an Excel spreadsheet of data from all stations. The file "ggd625_china_aldepth.txt" is an ASCII text file of yearly depth from all stations.

File Size:

ggd625_china_aldepth.txt: 0.87 KB
ggd625_china_soiltemp.xls: 628 KB
ggd625_da_xi_gou.txt: 9 KB
ggd625_deep_borehole.txt: 12 KB
ggd625_ecology_station.txt: 38 KB
ggd625_fenghuoshan.txt: 48 KB
ggd625_glacier_station.txt: 31 KB
ggd625_shallow_borehole.txt: 10 KB
ggd625_tworivers_lower.txt: 24 KB
ggd625_tworivers_upper.txt: 23 KB
ggd625_wuli.txt: 35 KB

Spatial Coverage:

Data were collected from nine sites in China. No data are available from a tenth site (China 6) provided with this data set. The following coordinates are averages from two or more GPS measurements:

Station Latitude Longitude Description
China 1 34° 43' 46.2" N 92° 53' 30.25" E On the Qinghai-Xizang (Tibet) Plateau in Qinghai Province south of Wudaoliang, near km marker 3068 on the road between Golmud and Lhasa. Fenghuoshan research station.
China 2 35° 25' 58.9" N 93° 35' 54.65" E On the Qinghai-Xizang (Tibet) Plateau in Qinghai Province, near km marker 2952 on the road between Golmud and Lhasa. Ecology research station.
China 3 34° 28' 14.1" N 92° 43' 37.35" E On the Qinghai-Xizang (Tibet) Plateau in Qinghai Province, next to the highway maintenance station on the road between Golmud and Lhasa. Wuli site.
China 4 31° 49' 6.85" N 91° 44' 12.85" E On the Qinghai-Xizang (Tibet) Plateau in Qinghai Province on the road between Golmud and Lhasa. Two rivers lower site, Liangdaohe A.
China 5 31° 49' 15.65" N 91° 44' 28.5" E On the Qinghai-Xizang (Tibet) Plateau in Qinghai Province on the road between Golmud and Lhasa. Two rivers upper site, Liangdaohe B.
China 6 35° 37' 16.7" N 94° 03' 44.8" E Kunlun basin on the Qinghai-Xizang (Tibet) Plateau in Qinghai Province.
China 7 43° 12' 42.6" N 87° 07' 04.1" E South of Urumqi, China on the Glacier Research Station
China 8 43° 06' 46.4" N 86° 50' 35.9" E Da Xi Gou, China on the Glacier Research Substation
China 9 43° 07' 09.2" N 86° 51' 09.45" E Deep borehole site, Da Xi Gau
China 10 43° 06' 23.1" N 86° 48' 30.7" E Shallow borehole site

Temporal Coverage:

The following date ranges have incomplete coverage; some stations have large gaps of data.

China 1 (Fenghuoshan station): June 1998 through November 2001
China 2 (Ecology station): August 1999 through December 2001
China 3 (Wuli site): September 1999 through December 2001
China 4 (Two rivers, lower): October 1999 through December 2001
China 5 (Two rivers, upper): October 1999 through December 2001
China 6 (Kunlun basin): No data available
China 7 (Glacier station): September 2000 through April 2002
China 8 (Da Xi Gou, Glacier station): June through September 2001
China 9 (Deep borehole site): June 2001 through May 2002
China 10 (Shallow borehole site): June 2001 through May 2002

3. Document Information:

Document Creation Date:

May 2003

Document Revision Date:

May 2003

Document URL:

http://nsidc.org/data/docs/fgdc/ggd625_soiltemp_china/index.html