ISLSCP Initiative II

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Carbon Data

Atmospheric CO₂ Consumption by Continential Erosion

The Continental Atmospheric CO₂ Consumption data set represents gridded estimates for the riverine export of carbon and of sediments based on empirical models. All data exist for the overall continental area in a spatial resolution of 0.5 x 0.5 degree longitude/ latitude. The units are tC/km²/yr for all carbon species, and t/km²/yr for sediment fluxes. On the whole, five data sets are available: dissolved organic carbon (DOC) export (cont_flux_doc_hd_map.asc), particulate organic carbon (POC) export (cont_flux_poc_hd_map.asc), bicarbonate export (cont_flux_hco3_hd_map.asc), export of bicarbonate being of atmospheric origin (also called "atmospheric CO₂ consumption by rock weathering", which is identical to the previous data set, except for the weathering of carbonate rocks, where only half of the carbon is of atmospheric origin) (cont_flux_co2rw_hd_map.asc), and sediment export (cont_flux_tss_hd_map.asc).

This data set is related to the Global River Fluxes of Carbon and Sediments to the Oceans data set.

Data Provider: Wolfgang Ludwig, Philippe Amiotte-Suchet, Jean-Luc Probst

Data Files (ISLSCP II Disc #1)

Data Set Documentation

Image Viewing Tutorial

File Information

The Continental data files come in two resolutions: half-degree (hd) with 720 values per line and 360 lines, and one-degree (1d) with 360 values per line and 180 lines. The files are all in ASCII format with a simgle space separating the values. Oceanic grid points are represented by -99. The part of the continents which are covered by ice have specific carbon and sediment fluxes of 0. The files have been compressed using the PKZip program. Each uncompressed file contains space-delimited ASCII text.

  File Name                    Description
  ---------                    -----------
  cont_flux_co2rw_hd_map.asc   bicarbonate export (atmospheric origin), also called
                               "atmospheric CO2 consumption by rock weathering"
  cont_flux_doc_hd_map.asc     dissolved organic carbon (DOC) export
  cont_flux_hco3_hd_map.asc    bicarbonate export
  cont_flux_poc_hd_map.asc     particulate organic carbon (POC) export
  cont_flux_tss_hd_map.asc     sediment export

Related Pages:
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                Atmospheric CO2 Consumption by Continential Erosion

Revision Date: November 29, 2004