Global database of surface ocean particulate organic carbon export fluxes diagnosed from the 234Th technique

Through the processes of the biological pump, carbon is exported to the deep ocean in the form of dissolved and particulate organic matter. There are several ways by which downward export fluxes can be estimated. The great attraction of the 234Th technique is that its fundamental operation allows a...

Full description

Bibliographic Details
Main Author: Le Moigne, Frédéric A C
Format: Dataset
Language:English
Published: PANGAEA 2013
Subjects:
-
Carbon
organic
flux
Comment
DATE/TIME
Date/time end
Day of the year
DEPTH
water
Identification
LATITUDE
LONGITUDE
Primary production of carbon per area
daily
Reference/source
Thorium-234
Arctic
Atlantic Arctic
Atlantic-Arctic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.809717
https://doi.org/10.1594/PANGAEA.809717
Description
Summary:Through the processes of the biological pump, carbon is exported to the deep ocean in the form of dissolved and particulate organic matter. There are several ways by which downward export fluxes can be estimated. The great attraction of the 234Th technique is that its fundamental operation allows a downward flux rate to be determined from a single water column profile of thorium coupled to an estimate of POC/234Th ratio in sinking matter. We present a database of 723 estimates of organic carbon export from the surface ocean derived from the 234Th technique. Data were collected from tables in papers published between 1985 and 2013 only. We also present sampling dates, publication dates and sampling areas. Most of the open ocean Longhurst provinces are represented by several measurements. However, the Western Pacific, the Atlantic Arctic, South Pacific and the South Indian Ocean are not well represented. There is a variety of integration depths ranging from surface to 220m. Globally the fluxes ranged from -22 to 125 mmol of C/m**2/d. We believe that this database is important for providing new global estimate of the magnitude of the biological carbon pump.

Similar Items