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
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).
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
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):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DATE/TIME | Date/Time | Xing, Tingting | Geocode | ||
| 2 | LATITUDE | Latitude | Xing, Tingting | Geocode | ||
| 3 | LONGITUDE | Longitude | Xing, Tingting | Geocode | ||
| 4 | ELEVATION | Elevation | m a.s.l. | Xing, Tingting | Geocode – sampling height | |
| 5 | Station label | Station | Xing, Tingting | |||
| 6 | Sample ID | Sample ID | Xing, Tingting | |||
| 7 | Gear | Gear | Xing, Tingting | |||
| 8 | Time in minutes | Time min | min | Xing, Tingting | air sampling period | |
| 9 | Temperature, air | TTT | °C | Xing, Tingting | in situ | |
| 10 | Pressure, atmospheric | PPPP | hPa | Xing, Tingting | ||
| 11 | Methane, flux | CH4 flux | µg/m2/h | Xing, Tingting | PVC tube (PVCT) |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
252 data points