Rehder, Zoé; Zaplavnova, Anna; Kutzbach, Lars (2020): Dissolved-gas concentrations, physical and chemical properties of 41 ponds as well as key meteorological parameters in the Lena River Delta, Siberia [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.922399
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Abstract:
Ponds emit more methane per area than larger lakes. However, methane concentrations in and methane emissions from ponds show more spatial variability than larger waterbodies. A better understanding of this variability is needed to improve upscaling estimates of freshwater methane emissions. To this end, we studied 41 polygonal-tundra ponds on the islands Samoylov and Kurungakh in the Lena River Delta, northeast Siberia. The ponds fall into three geomorphological types with distinct differences in drivers of methane concentrations: polygonal-center ponds, ice-wedge ponds and larger merged-polygonal ponds. We collected water samples at different locations and depths in each pond and determined methane concentrations using gas chromatography. Additionally, we collected information on the geomorphology, vegetation cover as well as on key physical and chemical properties of the ponds and combined them with meteorological data to identify drivers of surface-water methane concentrations.
Related to:
Rehder, Zoé; Zaplavnova, Anna; Kutzbach, Lars (2021): Identifying drivers behind spatial variability of methane concentrations in East Siberian ponds. Frontiers in Earth Science, 9, 617662, https://doi.org/10.3389/feart.2021.617662
Project(s):
Funding:
German Research Foundation (DFG), grant/award no. 390683824: EXC 2037: Climate, Climatic Change, and Society (CLICCS)
Coverage:
Median Latitude: 72.358732 * Median Longitude: 126.441004 * South-bound Latitude: 72.280860 * West-bound Longitude: 126.176350 * North-bound Latitude: 72.387400 * East-bound Longitude: 126.514750
Date/Time Start: 2019-07-23T00:00:00 * Date/Time End: 2019-08-27T00:00:00
Minimum DEPTH, water: 0.17 m * Maximum DEPTH, water: 1.13 m
Event(s):
Lena-2019_1 (Pond_1) * Latitude: 72.370556 * Longitude: 126.405556 * Date/Time Start: 2019-07-23T00:00:00 * Date/Time End: 2019-08-13T00:00:00 * Lake water depth: 0.65158 * Location: Lena Delta * Campaign: RU-Land_2019_Lena (Lena 2019) * Basis: AWI Arctic Land Expedition * Method/Device: Multiple investigations (MULT)
Lena-2019_2 (Pond_2) * Latitude: 72.373611 * Longitude: 126.493056 * Date/Time Start: 2019-07-24T00:00:00 * Date/Time End: 2019-08-07T00:00:00 * Lake water depth: 1.10258 * Location: Lena Delta * Campaign: RU-Land_2019_Lena (Lena 2019) * Basis: AWI Arctic Land Expedition * Method/Device: Multiple investigations (MULT)
Lena-2019_3 (Pond_3) * Latitude: 72.370233 * Longitude: 126.487967 * Date/Time Start: 2019-07-24T00:00:00 * Date/Time End: 2019-08-12T00:00:00 * Lake water depth: 0.58508 * Location: Lena Delta * Campaign: RU-Land_2019_Lena (Lena 2019) * Basis: AWI Arctic Land Expedition * Method/Device: Multiple investigations (MULT)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Rehder, Zoé | |||
| 2 | Optional event label | Event 2 | Rehder, Zoé | |||
| 3 | Date | Date | Rehder, Zoé | |||
| 4 | LATITUDE | Latitude | Rehder, Zoé | Handheld GPS, Garmin | Geocode | |
| 5 | LONGITUDE | Longitude | Rehder, Zoé | Handheld GPS, Garmin | Geocode | |
| 6 | Type | Type | Rehder, Zoé | |||
| 7 | DEPTH, water | Depth water | m | Rehder, Zoé | Mini-Diver DI501, Schlumberger Water Services, NL | Geocode |
| 8 | Area | Area | m2 | Rehder, Zoé | Calculated based on geographical coordinates | GIS, tape measure |
| 9 | Moss, cover | Moss cov | % | Rehder, Zoé | Calculated based on geographical coordinates | GIS |
| 10 | Vegetation, cover | Veg cov | % | Rehder, Zoé | Calculated based on geographical coordinates | GIS |
| 11 | Carbon, organic | C org | % | Rehder, Zoé | Muffel furnace, 550 °C, LOI | top sediment |
| 12 | Methane, dissolved | CH4 diss | µmol/l | Rehder, Zoé | Headspace gas chromatography | surface mean |
| 13 | Methane, standard deviation | CH4 std dev | ± | Rehder, Zoé | Headspace gas chromatography | surface |
| 14 | Methane, dissolved | CH4 diss | µmol/l | Rehder, Zoé | Headspace gas chromatography | bottom mean |
| 15 | Carbon dioxide, dissolved | CO2 diss | µmol/l | Rehder, Zoé | Headspace gas chromatography | surface mean |
| 16 | Oxygen, dissolved | DO | ml/l | Rehder, Zoé | Multimeter with CellOx325 sensor, WTW | |
| 17 | Wind speed | ff | m/s | Rehder, Zoé | 3D ultrasonic anemometer (3D-UA) | mean over last 1.5 h |
| 18 | Short-wave radiation | SWR | W/m2 | Rehder, Zoé | Campbell Scientific NR-LITE2 Net Radiometer | incoming, mean over last 6 h |
| 19 | Temperature, water | Temp | °C | Rehder, Zoé | Multimeter with CellOx325 sensor, WTW | |
| 20 | Thaw depth of active layer | Thaw depth | cm | Rehder, Zoé | Metal rod |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
820 data points