CORE
🇺🇦
make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
unknown
Air-sea CO2 exchange in the equatorial Pacific
Authors
Asher
Bock
+80 more
Bradley
Broecker
Broecker
Businger
Businger
Christopher J. Zappa
Christopher W. Fairall
Coale
Conway
DeGrandpre
Donelan
Drennan
Dyer
Edson
Edson
Eugene A. Terray
Eugster
Fairall
Fairall
Fairall
Feely
Feely
Feely
Frew
Frew
Garbe
Hare
Hood
Imberger
Jacobs
James B. Edson
Jeffrey E. Hare
Johnson
Jonathan D. Ware
Jähne
Jähne
Kantha
Kondo
Liss
Liss
MacIntyre
Mark Donelan
McGillis
McGillis
McGillis
McKenna
McNeil
Merlivat
Michael D. DeGrandpre
Nightingale
Panofsky
Paulson
Peng
Price
Richard A. Feely
Rik Wanninkhof
Robertson
Sabine
Schimpf
Schlüssel
Sean P. McKenna
Siegel
Smith
Soloviev
Spigel
Strutton
Takahashi
Van Scoy
Wade R. McGillis
Wanninkhof
Wanninkhof
Wanninkhof
Wanninkhof
Wanninkhof
Ward
Webb
Weiss
William Drennan
Zemmelink
Zhang
Publication date
1 January 2004
Publisher
'American Geophysical Union (AGU)'
Doi
Cite
Abstract
Author Posting. © American Geophysical Union, 2004. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 109 (2004): C08S02, doi:10.1029/2003JC002256.GasEx-2001, a 15-day air-sea carbon dioxide (CO2) exchange study conducted in the equatorial Pacific, used a combination of ships, buoys, and drifters equipped with ocean and atmospheric sensors to assess variability and surface mechanisms controlling air-sea CO2 fluxes. Direct covariance and profile method air-sea CO2 fluxes were measured together with the surface ocean and marine boundary layer processes. The study took place in February 2001 near 125°W, 3°S in a region of high CO2. The diurnal variation in the air-sea CO2 difference was 2.5%, driven predominantly by temperature effects on surface solubility. The wind speed was 6.0 ± 1.3 m s−1, and the atmospheric boundary layer was unstable with conditions over the range −1 < z/L < 0. Diurnal heat fluxes generated daytime surface ocean stratification and subsequent large nighttime buoyancy fluxes. The average CO2 flux from the ocean to the atmosphere was determined to be 3.9 mol m−2 yr−1, with nighttime CO2 fluxes increasing by 40% over daytime values because of a strong nighttime increase in (vertical) convective velocities. The 15 days of air-sea flux measurements taken during GasEx-2001 demonstrate some of the systematic environmental trends of the eastern equatorial Pacific Ocean. The fact that other physical processes, in addition to wind, were observed to control the rate of CO2 transfer from the ocean to the atmosphere indicates that these processes need to be taken into account in local and global biogeochemical models. These local processes can vary on regional and global scales. The GasEx-2001 results show a weak wind dependence but a strong variability in processes governed by the diurnal heating cycle. This implies that any changes in the incident radiation, including atmospheric cloud dynamics, phytoplankton biomass, and surface ocean stratification may have significant feedbacks on the amount and variability of air-sea gas exchange. This is in sharp contrast with previous field studies of air-sea gas exchange, which showed that wind was the dominating forcing function. The results suggest that gas transfer parameterizations that rely solely on wind will be insufficient for regions with low to intermediate winds and strong insolation.This work was performed with the support of the National Science Foundation Grant OCE-9986724 and the NOAA Global Carbon Cycle Program Grants NA06GP048, NA17RJ1223, and NA87RJ0445 in the Office of Global Programs
Similar works
Full text
Open in the Core reader
Download PDF
Available Versions
Woods Hole Open Access Server
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:darchive.mblwhoilibrary.or...
Last time updated on 08/06/2012
Sustaining member
Columbia University Academic Commons
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:academiccommons.columbia.e...
Last time updated on 02/10/2018
Crossref
See this paper in CORE
Go to the repository landing page
Download from data provider
Last time updated on 03/01/2020
Sustaining member
University of Miami: Scholarship Miami
See this paper in CORE
Go to the repository landing page
Download from data provider
oai:alma.01UOML_INST:113770203...
Last time updated on 16/01/2024