Liu, Qiao; Du, Guanxiang; Li, Xiaojun; Liu, Jiarui; Meng, Ni; Li, Chunyang; Liu, Xiting; Zhang, Guiling; Yang, Guipeng; Joye, Samantha B; Zhuang, Guang-Chao (2023): Methane concentrations and aerobic methane oxidation rates in the East China Sea and Yellow Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959589
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Published: 2023-06-07 • DOI registered: 2023-07-06
Abstract:
We measured the methane concentrations and aerobic methane oxidation rates (MOx) in the seawater of East China Sea and Yellow Sea. Seawater samples were collected onboard "Dong Fang Hong 3" in April 2021 using a rosette system equipped with 24-liter Niskin bottles and a Seabird 911 CTD. Methane concentrations were measured using a purge-and-trap preconcentration method with a gas chromatography (Shimadzu GC-2014B) with a flame ionization detector. The rate constants of MOx and MOx rates were determined using a radiotracer approach through quantifying the conversion of added 3H-methane tracer to the oxidation product 3H-H2O.
Coverage:
Median Latitude: 31.633584 * Median Longitude: 123.305031 * South-bound Latitude: 26.009200 * West-bound Longitude: 120.499000 * North-bound Latitude: 39.523700 * East-bound Longitude: 126.826100
Date/Time Start: 2021-04-19T13:41:43 * Date/Time End: 2021-05-02T21:20:20
Minimum Elevation: -121.0 m * Maximum Elevation: -11.0 m
Event(s):
DFH-3_2021-04_A4 (A4) * Latitude: 35.995600 * Longitude: 123.941100 * Date/Time: 2021-04-21T09:53:47 * Elevation: -74.0 m * Location: Yellow Sea * Campaign: DFH-3_2021-04 * Basis: Dong Fang Hong 3 * Method/Device: CTD, Sea-Bird, SBE 911
DFH-3_2021-04_B1 (B1) * Latitude: 35.038800 * Longitude: 120.589800 * Date/Time: 2021-04-24T12:54:27 * Elevation: -36.0 m * Location: Yellow Sea * Campaign: DFH-3_2021-04 * Basis: Dong Fang Hong 3 * Method/Device: CTD, Sea-Bird, SBE 911
DFH-3_2021-04_B3 (B3) * Latitude: 34.989600 * Longitude: 122.272500 * Date/Time: 2021-04-24T22:34:03 * Elevation: -57.0 m * Location: Yellow Sea * Campaign: DFH-3_2021-04 * Basis: Dong Fang Hong 3 * Method/Device: CTD, Sea-Bird, SBE 911
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Liu, Qiao | |||
| 2 | Optional event label | Event 2 | Liu, Qiao | |||
| 3 | Date/Time of event | Date/Time | Liu, Qiao | |||
| 4 | Latitude of event | Latitude | Liu, Qiao | |||
| 5 | Longitude of event | Longitude | Liu, Qiao | |||
| 6 | Elevation of event | Elevation | m | Liu, Qiao | ||
| 7 | Methane | CH4 | nmol/l | Liu, Qiao | Purge and trap gas chromatography | |
| 8 | First order oxidation rate constant | k | 1/day | Liu, Qiao | Radiotracer | |
| 9 | Methane, oxidation rate | MOX | nmol/l/day | Liu, Qiao | Radiotracer |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
96 data points
Data
| 1 Event | 2 Event 2 | 3 Date/Time | 4 Latitude | 5 Longitude | 6 Elevation [m] | 7 CH4 [nmol/l] | 8 k [1/day] | 9 MOX [nmol/l/day] |
|---|---|---|---|---|---|---|---|---|
| DFH-3_2021-04_FJ2 | FJ2 | 2021-04-27T00:34:54 | 31.3295 | 124.4993 | -53 | 3.1 | 0.0005 | 0.0014 |
| DFH-3_2021-04_B1 | B1 | 2021-04-24T12:54:27 | 35.0388 | 120.5898 | -36 | 3.2 | 0.0010 | 0.0033 |
| DFH-3_2021-04_H1 | H1 | 2021-04-19T13:41:43 | 36.9812 | 122.7470 | -27 | 6.2 | 0.0020 | 0.0124 |
| DFH-3_2021-04_A4 | A4 | 2021-04-21T09:53:47 | 35.9956 | 123.9411 | -74 | 3.5 | 0.0023 | 0.0069 |
| DFH-3_2021-04_D1 | D1 | 2021-04-27T12:09:37 | 31.3591 | 122.5671 | -32 | 8.9 | 0.0028 | 0.0187 |
| DFH-3_2021-04_T1 | T1 | 2021-05-02T18:32:25 | 26.8471 | 120.4990 | -25 | 3.2 | 0.0060 | 0.0139 |
| DFH-3_2021-04_FJ1 | FJ1 | 2021-04-27T18:48:40 | 31.3270 | 123.5043 | -45 | 5.0 | 0.0061 | 0.0258 |
| DFH-3_2021-04_F5 | F5 | 2021-04-28T23:00:25 | 29.6512 | 126.7379 | -102 | 3.3 | 0.0072 | 0.0220 |
| DFH-3_2021-04_D4 | D4 | 2021-04-26T02:40:34 | 32.1615 | 123.5060 | -38 | 3.5 | 0.0089 | 0.0305 |
| DFH-3_2021-04_FJ5 | FJ5 | 2021-04-29T10:09:55 | 30.0607 | 122.7056 | -34 | 19.8 | 0.0090 | 0.1847 |
| DFH-3_2021-04_B4 | B4 | 2021-04-24T03:23:32 | 35.0029 | 123.0443 | -70 | 3.3 | 0.0105 | 0.0386 |
| DFH-3_2021-04_P6 | P6 | 2021-04-28T06:06:43 | 28.7207 | 126.1370 | -115 | 2.8 | 0.0108 | 0.0151 |
| DFH-3_2021-04_H2 | H2 | 2021-04-19T17:10:45 | 36.9975 | 123.4225 | -70 | 3.6 | 0.0109 | 0.0380 |
| DFH-3_2021-04_H11 | H11 | 2021-04-21T17:11:05 | 38.7526 | 123.7510 | -52 | 3.5 | 0.0125 | 0.0482 |
| DFH-3_2021-04_H12 | H12 | 2021-04-21T12:04:45 | 39.5237 | 123.9060 | -23 | 9.4 | 0.0143 | 0.1136 |
| DFH-3_2021-04_S2 | S2 | 2021-05-01T07:33:19 | 27.6326 | 121.6309 | -40 | 3.8 | 0.0156 | 0.0660 |
| DFH-3_2021-04_P2 | P2 | 2021-04-29T03:45:10 | 30.7569 | 123.2292 | -55 | 15.6 | 0.0159 | 0.2711 |
| DFH-3_2021-04_P5 | P5 | 2021-04-29T11:28:06 | 29.2285 | 125.4566 | -89 | 3.5 | 0.0159 | 0.0542 |
| DFH-3_2021-04_C2 | C2 | 2021-04-25T01:19:13 | 33.9847 | 122.1025 | -25 | 5.5 | 0.0176 | 0.1111 |
| DFH-3_2021-04_S4 | S4 | 2021-05-01T23:40:28 | 27.1741 | 122.7515 | -108 | 3.8 | 0.0191 | 0.0626 |
| DFH-3_2021-04_T4 | T4 | 2021-05-02T04:19:16 | 26.0092 | 121.7575 | -121 | 3.0 | 0.0194 | 0.0626 |
| DFH-3_2021-04_P4 | P4 | 2021-04-29T17:44:35 | 29.8489 | 124.5548 | -60 | 3.4 | 0.0198 | 0.0656 |
| DFH-3_2021-04_F4 | F4 | 2021-04-28T17:44:04 | 30.4964 | 126.8261 | -92 | 3.2 | 0.0205 | 0.0664 |
| DFH-3_2021-04_T2 | T2 | 2021-05-02T21:20:20 | 26.6024 | 120.9014 | -62 | 3.6 | 0.0208 | 0.0758 |
| DFH-3_2021-04_P3 | P3 | 2021-04-29T01:06:29 | 30.5090 | 123.5502 | -65 | 14.7 | 0.0223 | 0.3060 |
| DFH-3_2021-04_H13 | H13 | 2021-04-20T07:11:35 | 39.1636 | 123.3789 | -42 | 4.1 | 0.0229 | 0.1064 |
| DFH-3_2021-04_S3 | S3 | 2021-05-01T04:19:49 | 27.3281 | 122.0022 | -88 | 3.5 | 0.0244 | 0.0843 |
| DFH-3_2021-04_B3 | B3 | 2021-04-24T22:34:03 | 34.9896 | 122.2725 | -57 | 3.8 | 0.0254 | 0.0943 |
| DFH-3_2021-04_E4 | E4 | 2021-04-30T01:02:21 | 28.4833 | 123.5693 | -77 | 3.3 | 0.0283 | 0.0982 |
| DFH-3_2021-04_E6 | E6 | 2021-04-30T10:42:47 | 27.4576 | 124.9848 | -105 | 3.8 | 0.0294 | 0.1101 |
| DFH-3_2021-04_B5 | B5 | 2021-04-24T08:52:16 | 34.9776 | 123.9025 | -75 | 3.5 | 0.0332 | 0.1123 |
| DFH-3_2021-04_S1 | S1 | 2021-05-01T10:24:39 | 27.8831 | 121.3322 | -11 | 15.9 | 0.0379 | 0.6022 |