Citation:

PANGAEA.941603

Name: Measurements of turbulence from an autonomous drifting buoy in 2019 during FALKOR cruise FK191120
Published: 2022-03-01
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Air-sea CO2 flux; gas exchange; gas transfer velocity; marine carbon cycle; ocean technology; Pacific Ocean; partial pressure of carbon dioxide

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Abstract:

Data from autonomous, drifting buoy with a floating chamber to measure insitu air-sea carbon dioxide (CO2) fluxes during RV Falkor cruise FK191120 in the southern Pacific during November-December 2019. The technique is described in detail in Ribas-Ribas et al. (2018) (https://doi.org/10.1525/elementa.275). The buoy is equipped with a sensor to measure aqueous and atmospheric partial pressure of CO2 (pCO2), and to monitor the increase or loss of CO2 inside the chamber. One complete cycle including two chamber measurements last 70 minutes. The buoy can be deployed for more than 15 hours, and at wind speeds of up to 10 m/s. Floating chambers are known to overestimate fluxes due to the creation of additional turbulence at the water surface. We check that by measuring turbulence with two Acoustic Doppler Velocimeter (ADV), one directly underneath the center of the floating chamber (equipped with an inertial motion unit) and the other one positioned sideways to measure turbulence outside the perimeter of the buoy.

Keyword(s):

Air-sea CO2 flux; gas exchange; gas transfer velocity; marine carbon cycle; ocean technology; Pacific Ocean; partial pressure of carbon dioxide

Related to:

Ribas-Ribas, Mariana; Kilcher, L F; Wurl, Oliver (2018): Sniffle: a step forward to measure in situ CO2 fluxes with the floating chamber technique. Elementa - Science of the Anthropocene, 6(14), https://doi.org/10.1525/elementa.275

Project(s):

Carbon microcycle: CO2 gradients in the ocean surface (CµC)

Funding:

Deutsche Forschungsgemeinschaft, Bonn (DFG), grant/award no. 427614800

Coverage:

Median Latitude: -14.053500 * Median Longitude: -177.309375 * South-bound Latitude: -18.010000 * West-bound Longitude: 177.760000 * North-bound Latitude: -10.805000 * East-bound Longitude: -175.010000

Date/Time Start: 2019-11-22T20:32:00 * Date/Time End: 2019-12-12T02:58:00

Event(s):

FK191120_2_BUOY * Latitude Start: -14.235000 * Longitude Start: -179.560000 * Latitude End: -14.204000 * Longitude End: -179.580000 * Date/Time Start: 2019-11-22T20:32:00 * Date/Time End: 2019-11-23T02:50:00 * Location: South Pacific Ocean * Campaign: * Basis: Falkor * Method/Device: Buoy (BUOY)

FK191120_4_BUOY * Latitude Start: -12.351000 * Longitude Start: -177.890000 * Latitude End: -12.348000 * Longitude End: -177.950000 * Date/Time Start: 2019-11-23T20:25:00 * Date/Time End: 2019-11-24T02:43:00 * Location: South Pacific Ocean * Campaign: * Basis: Falkor * Method/Device: Buoy (BUOY)

FK191120_5_BUOY * Latitude Start: -10.805000 * Longitude Start: -175.990000 * Latitude End: -10.855000 * Longitude End: -175.910000 * Date/Time Start: 2019-11-24T20:59:00 * Date/Time End: 2019-11-25T02:01:00 * Location: South Pacific Ocean * Campaign: * Basis: Falkor * Method/Device: Buoy (BUOY)

Comment:

The files we provide are:

* ADV with IMU (L9mmdd.VEC)

* ADV without IMU (19mmdd.vec)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator
1	File content	Content		Ribas-Ribas, Mariana
2	Binary Object	Binary		Ribas-Ribas, Mariana
3	Binary Object (File Size)	Binary (Size)	Bytes	Ribas-Ribas, Mariana

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Basic curation (CurationLevelB)

Size:

32 data points

Data

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1 Content	2 Binary	3 Binary (Size) [Bytes]
Turbulence data (ADV without IMU) at station 2	191122.vec	11.3 MBytes
Turbulence data (ADV without IMU) at station 4	191123.vec	10.3 MBytes
Turbulence data (ADV without IMU) at station 5	191124.vec	11.4 MBytes
Turbulence data (ADV without IMU) at station 8	191127.vec	6.5 MBytes
Turbulence data (ADV without IMU) at station 9	191128.vec	15.3 MBytes
Turbulence data (ADV without IMU) at station 10	191129.vec	10.2 MBytes
Turbulence data (ADV without IMU) at station 11	191130.vec	13.7 MBytes
Turbulence data (ADV without IMU) at station 20	191211.vec	112.3 kBytes
Turbulence data (ADV with IMU) at station 2	L91122.VEC	3.5 MBytes
Turbulence data (ADV with IMU) at station 4	L91123.VEC	57.1 MBytes
Turbulence data (ADV with IMU) at station 5	L91124.VEC	47.1 MBytes
Turbulence data (ADV with IMU) at station 8	L91127.VEC	17.8 MBytes
Turbulence data (ADV with IMU) at station 9	L91128.VEC	6.4 MBytes
Turbulence data (ADV with IMU) at station 10	L91129.VEC	2.7 MBytes
Turbulence data (ADV with IMU) at station 11	L91130.VEC	1.7 MBytes
Turbulence data (ADV with IMU) at station 20	L91211.VEC	167.4 kBytes