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Xing, Tingting (2022): Methane fluxes in the foreland soil of Longxiazailongba Glacier on the Tibetan Plateau [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.943375

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Published: 2022-04-20 • DOI registered: 2022-10-07

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Abstract:
Glacier foreland soil was always considered as methane sink. However, there is still a lack of methane dynamics in the foreland soil of mountain glaciers , which are flooded by meltwater in the melting season. In present study, methane fluxes in foreland hollow and hummock soils were measured in June (pre-melting season) and August (melting season) 2020, using polyvinylchloride cylindrical (PVC) tubes . In the pre-melting season, the methane flux was -3.76 ± 9.84 μg·m-2·h-1, and significantly increased to 13.95 ± 12.44 μg·m-2·h-1 in the glacier melting season. Methane flux variations were also observed in the microtopography. Methane flux was -8.29 ± 9.44 μg·m-2·h-1 in hollow soils in the pre-melting season, which was significantly higher than that in hummock soils (0.78 ± 7.97 μg·m-2·h-1). Conversely, methane flux in melting season was 14.27 ± 12.15 μg·m-2·h-1 in hollow soils, which was no longer significantly different form that in hummock soils (13.64 ± 12.71 μg·m-2·h-1).
Keyword(s):
foreland soil; Methane flux; Tibetan Plateau
Funding:
Chinese Academy of Sciences (CAS), grant/award no. 2019QZKK0503: Second Tibetan Plateau Scientific Expedition and Research (STEP) program
Chinese Academy of Sciences (CAS), grant/award no. XDA20050101: Strategic Priority Research Program (A) of the Chinese Academy of Sciences
National Key Research and Development Program of China, grant/award no. 2019YFC1509103
National Natural Science Foundation of China (NSFC), grant/award no. 41971077
National Natural Science Foundation of China (NSFC), grant/award no. 91851207
Coverage:
Median Latitude: 33.100144 * Median Longitude: 92.010039 * South-bound Latitude: 33.100000 * West-bound Longitude: 92.010000 * North-bound Latitude: 33.102600 * East-bound Longitude: 92.010700
Date/Time Start: 2020-06-28T10:30:00 * Date/Time End: 2020-08-30T13:00:00
Minimum ELEVATION: 5188 m a.s.l. * Maximum ELEVATION: 5205 m a.s.l.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 DATE/TIMEDate/TimeXing, TingtingGeocode
2 LATITUDELatitudeXing, TingtingGeocode
3 LONGITUDELongitudeXing, TingtingGeocode
4 ELEVATIONElevationm a.s.l.Xing, TingtingGeocode – sampling height
5 Station labelStationXing, Tingting
6 Sample IDSample IDXing, Tingting
7 GearGearXing, Tingting
8 Time in minutesTime minminXing, Tingtingair sampling period
9 Temperature, airTTT°CXing, Tingtingin situ
10 Pressure, atmosphericPPPPhPaXing, Tingting
11 Methane, fluxCH4 fluxµg/m2/hXing, TingtingPVC tube (PVCT)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
252 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Date/Time		2 
Latitude		3 
Longitude		4 
Elevation [m a.s.l.]		5 
Station		6 
Sample ID		7 
Gear		8 
Time min [min]		9 
TTT [°C]		10 
PPPP [hPa]		11 
CH4 flux [µg/m2/h]
2020-06-28T10:30:0033.1092.015205Longxaizailongba Glacier forelandHo11Polyvinylchloride cylindrical03.8527.00-30.549
2020-06-28T10:30:0033.1092.015204Longxaizailongba Glacier forelandHo12Polyvinylchloride cylindrical03.4526.84-0.758
2020-06-28T10:30:0033.1092.015205Longxaizailongba Glacier forelandHo13Polyvinylchloride cylindrical03.1526.780.988
2020-06-28T11:50:0033.1092.015194Longxaizailongba Glacier forelandHo21Polyvinylchloride cylindrical013.4527.55-3.708
2020-06-28T11:50:0033.1092.015188Longxaizailongba Glacier forelandHo22Polyvinylchloride cylindrical013.3527.97-4.185
2020-06-28T11:50:0033.1092.015188Longxaizailongba Glacier forelandHo23Polyvinylchloride cylindrical014.2527.97-12.724
2020-06-28T13:00:0033.1092.015192Longxaizailongba Glacier forelandHo31Polyvinylchloride cylindrical015.2527.69-12.899
2020-06-28T13:00:0033.1092.015190Longxaizailongba Glacier forelandHo32Polyvinylchloride cylindrical014.0527.830.430
2020-06-28T13:00:0033.1092.015188Longxaizailongba Glacier forelandHo33Polyvinylchloride cylindrical013.9527.97-11.181
2020-06-28T10:30:0033.1092.015205Longxaizailongba Glacier forelandHu11Polyvinylchloride cylindrical03.5526.78-11.871
2020-06-28T10:30:0033.1092.015204Longxaizailongba Glacier forelandHu12Polyvinylchloride cylindrical03.1526.85-0.819
2020-06-28T10:30:0033.1092.015205Longxaizailongba Glacier forelandHu13Polyvinylchloride cylindrical03.1526.781.210
2020-06-28T11:50:0033.1092.015194Longxaizailongba Glacier forelandHu21Polyvinylchloride cylindrical013.6526.558.775
2020-06-28T11:50:0033.1092.015188Longxaizailongba Glacier forelandHu22Polyvinylchloride cylindrical013.2527.978.757
2020-06-28T11:50:0033.1092.015188Longxaizailongba Glacier forelandHu23Polyvinylchloride cylindrical013.4527.97-3.113
2020-06-28T13:00:0033.1092.015192Longxaizailongba Glacier forelandHu31Polyvinylchloride cylindrical014.7527.6912.371
2020-06-28T13:00:0033.1092.015190Longxaizailongba Glacier forelandHu32Polyvinylchloride cylindrical014.4527.832.266
2020-06-28T13:00:0033.1092.015188Longxaizailongba Glacier forelandHu33Polyvinylchloride cylindrical014.4527.97-10.586
2020-08-30T10:00:0033.1092.015205Longxaizailongba Glacier forelandHo11Polyvinylchloride cylindrical05.0527.005.735
2020-08-30T10:00:0033.1092.015204Longxaizailongba Glacier forelandHo12Polyvinylchloride cylindrical04.6526.8415.308
2020-08-30T10:00:0033.1092.015205Longxaizailongba Glacier forelandHo13Polyvinylchloride cylindrical04.0526.781.389
2020-08-30T11:30:0033.1092.015194Longxaizailongba Glacier forelandHo21Polyvinylchloride cylindrical010.4527.5518.470
2020-08-30T11:30:0033.1092.015188Longxaizailongba Glacier forelandHo22Polyvinylchloride cylindrical013.0527.9716.447
2020-08-30T11:30:0033.1092.015188Longxaizailongba Glacier forelandHo23Polyvinylchloride cylindrical015.2527.973.325
2020-08-30T13:00:0033.1092.015192Longxaizailongba Glacier forelandHo31Polyvinylchloride cylindrical014.7527.6928.234
2020-08-30T13:00:0033.1092.015190Longxaizailongba Glacier forelandHo32Polyvinylchloride cylindrical015.4527.8338.326
2020-08-30T13:00:0033.1092.015188Longxaizailongba Glacier forelandHo33Polyvinylchloride cylindrical015.1527.971.154
2020-08-30T10:00:0033.1092.015205Longxaizailongba Glacier forelandHu11Polyvinylchloride cylindrical05.2526.7837.453
2020-08-30T10:00:0033.1092.015204Longxaizailongba Glacier forelandHu12Polyvinylchloride cylindrical04.8526.852.651
2020-08-30T10:00:0033.1092.015205Longxaizailongba Glacier forelandHu13Polyvinylchloride cylindrical04.3526.7821.041
2020-08-30T11:30:0033.1092.015194Longxaizailongba Glacier forelandHu21Polyvinylchloride cylindrical011.0526.5512.617
2020-08-30T11:30:0033.1092.015188Longxaizailongba Glacier forelandHu22Polyvinylchloride cylindrical012.7527.976.842
2020-08-30T11:30:0033.1092.015188Longxaizailongba Glacier forelandHu23Polyvinylchloride cylindrical014.1527.974.120
2020-08-30T13:00:0033.1092.015192Longxaizailongba Glacier forelandHu31Polyvinylchloride cylindrical015.3527.696.136
2020-08-30T13:00:0033.1092.015190Longxaizailongba Glacier forelandHu32Polyvinylchloride cylindrical016.5527.8331.876
2020-08-30T13:00:0033.1092.015188Longxaizailongba Glacier forelandHu33Polyvinylchloride cylindrical016.0527.970.032