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Canning, Anna; Maier, Marie-Sophie (2020): Seasonal high-resolution sensor data for pCO2, pCH4, O2 and temperature/salinity within the Danube Delta, Romania in May 2017 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.925079, In: Canning, Anna; Maier, Marie-Sophie; Wehrli, Bernhard; Körtzinger, Arne (2020): Seasonal high-resolution sensor data for pCO2, pCH4, O2 and temperature/salinity within the Danube Delta, Romania in 2017 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.925080

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Abstract:
Flow-through pCO2, O2 and some CH4 measurements throughout the Danube River Delta in spring (17.05.2017 - 26.05.2017). Surface water flow-through system set up on a houseboat (see Canning et al., 2020). All running on the same water at almost the same time (within seconds), therefore all joined together into each data set. Gaps from sensors depend on when they were logging. For the pCO2, some gaps will be due to periods of zeroing and flushing. Depth of pumps: approx. 75cm Flow rate: ~ 5-6 L/min flow readings logged for Aug and Oct. May data was manually logged and recorded, therefore potential discrepancies. All data was processed following Canning et al., 2020 (In Review). Seasonal sensor data are in separate files.
Sensors:
pCO2: CONTROS HydroC CO2 FT pCH4: CONTROS HydroC CH4 FT - formerly Kongsberg Maritime Contros GmbH, Kiel, Germany; now -4H-JENA engineering GmbH, Jena, Germany
O2: CONTROS HydroFlash O2 - formerly Kongsberg Maritime Contros GmbH, Kiel, Germany
SBE 45 Micro Thermosalinograph - Sea-Bird Electronics, Bellevue, USA
Gorgova climate station data used for climate data. Flags from internal questionable data are noted. Flags from notes in the field (such as plant coverage) are stated in meta data. During Aug, there was a high load of plant coverage and this has a separate flag column. Data split into rivers, channels and lakes through coding (RCL), with a description of each area in RCL comment. pCH4 and pCO2 converted into concentration using temperature, salinity, Wiesenburg and Guinasso 1979, and Weiss, 1974 respectively. Day-night codes in which the houseboat was stationary are marked in Day Night Code (numbering which for each cruise).
Keyword(s):
CH4; CO2; Danube Delta; O2
Related to:
Canning, Anna; Fietzek, Peer; Rehder, Gregor; Körtzinger, Arne (2021): Technical note: Seamless gas measurements across the land–ocean aquatic continuum – corrections and evaluation of sensor data for CO2, CH4 and O2 from field deployments in contrasting environments. Biogeosciences, 18(4), 1351-1373, https://doi.org/10.5194/bg-18-1351-2021
Canning, Anna; Wehrli, Bernhard; Körtzinger, Arne (in review): Methane in the Danube Delta: The importance of spatial patterns and diel cycles for atmospheric emission estimates. Biogeosciences Discussions, https://doi.org/10.5194/bg-2020-353
Project(s):
C-CASCADES (C-CASCADES)
Funding:
Horizon 2020 (H2020), grant/award no. 643052: C-CASCADES
Coverage:
Median Latitude: 45.086264 * Median Longitude: 29.478687 * South-bound Latitude: 44.891514 * West-bound Longitude: 28.870370 * North-bound Latitude: 45.229892 * East-bound Longitude: 29.649955
Date/Time Start: 2017-05-17T12:53:16 * Date/Time End: 2017-05-26T09:38:35
Minimum DEPTH, water: 0.75 m * Maximum DEPTH, water: 0.75 m
Event(s):
Romania1_Channel_above_main_river_Tulcea_to_Sulina * Latitude Start: 45.213305 * Longitude Start: 29.161628 * Latitude End: 45.213283 * Longitude End: 29.161522 * Date/Time Start: 2017-05-25T17:21:00 * Date/Time End: 2017-05-26T09:54:00 * Location: Channel * Method/Device: Underway cruise track measurements (CT) * Comment: Day-night
Romania1_Hot_Spot_Channel * Latitude Start: 45.128330 * Longitude Start: 29.590410 * Latitude End: 45.128387 * Longitude End: 29.590438 * Date/Time Start: 2017-05-23T18:18:00 * Date/Time End: 2017-05-24T09:57:00 * Location: Channel * Method/Device: Underway cruise track measurements (CT) * Comment: Day-night
Romania1_Lake_Rosu * Latitude Start: 45.053440 * Longitude Start: 29.568190 * Latitude End: 45.053150 * Longitude End: 29.566530 * Date/Time Start: 2017-05-22T19:32:00 * Date/Time End: 2017-05-23T13:17:00 * Location: Lake * Method/Device: Underway cruise track measurements (CT) * Comment: Day-night
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DATE/TIMEDate/TimeCanning, AnnaGeocode
2LATITUDELatitudeCanning, AnnaGeocode
3LONGITUDELongitudeCanning, AnnaGeocode
4DEPTH, waterDepth watermCanning, AnnaGeocode
5Methane, partial pressurepCH4µatmCanning, AnnaTDLAS
6MethaneCH4nmol/lCanning, AnnaCalculated
7MethaneCH4mg/lCanning, AnnaCalculated
8Carbon dioxide, partial pressurepCO2µatmCanning, AnnaInfrared gas analyzer (NDIR)
9Carbon dioxideCO2µmol/lCanning, AnnaCalculated
10Carbon dioxideCO2mg/lCanning, AnnaCalculated
11Oxygen, partial pressurepO2mbarCanning, AnnaOxygen optode (OPTODE)
12OxygenO2µmol/kgCanning, AnnaCalculated
13OxygenO2µmol/lCanning, AnnaCalculated
14Oxygen saturationO2 sat%Canning, Anna
15Temperature, waterTemp°CCanning, AnnaThermosalinograph (TSG)
16ConductivityCondmS/cmCanning, AnnaThermosalinograph (TSG)recalculated from S/m
17Conductivity, specificCondµS/mCanning, AnnaThermosalinograph (TSG)recalculated from uS/cm
18SalinitySalCanning, AnnaThermosalinograph (TSG)
19FlagFlagCanning, Anna
20FlagFlagCanning, AnnaFlag Notes
21Flow rateFlow ratel/minCanning, Anna
22Sample code/labelSample labelCanning, AnnaRiver (1), channel (2) or lake (3) code
23CommentCommentCanning, AnnaName of the river, channel or lake with description
24CodeCodeCanning, AnnaDay Night Code
Size:
2265475 data points

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