2017-01-20T23:52:27Z http://mercury.ornl.gov/oai/provider

oai:mercury-ops2.ornl.gov:ornldaac_1209 2017-01-20T09:44:44Z ORNLDAAC

LC07_WETLANDS_FLUXES LBA-ECO LC-07 CO2 and CH4 Flux from Wetlands, Negro River Basin, Brazil: 2004-2006 BELGER, L.; FORSBERG, B.R.; MELACK, J.M. LBA-ECO LC-07 CO2 and CH4 Flux from Wetlands, Negro River Basin, Brazil: 2004-2006 2014 Oak Ridge, Tennessee, U.S.A. Oak Ridge National Laboratory Distributed Active Archive Center Online Files doi:10.3334/ORNLDAAC/1209 1209

ABSTRACT: This data set provides estimates of daily and monthly carbon dioxide (CO2) and methane (CH4) diffusive and ebullitive flux for dry and flooded areas from two study sites, Cuini and Itu, in the interfluvial wetlands of the upper Negro River basin, Brazil. CO2 (ebullitive and diffusive) and CH4 diffusive flux measurements were made one day each month from February 2005 through January 2006 in both permanently and seasonally flooded areas. For the remaining days of each month, fluxes were calculated as the mean of the two measurements bracketing that time period, times the area flooded each day. Total site area, dry area, and seasonally varying flooded area estimates for the two wetlands were determined through analysis of synthetic aperture radar data from Radarsat images. From these estimates, the total flux of CO2 and CH4 for the sites was calculated. Values for CH4 ebullitive flux were determined from a constant for each area based on whether the water was rising or falling and the area flooded. Hydrologic measurements were taken from April 2004 through January, 2006. There are three comma-separated (.csv) data files with this data set.

2004-03-10 2006-01-31 COMPLETE -1.1424 -0.2863 -64.108 -63.0996 ESIP Earth Science Information Partners Program EOSDIS Earth Observing System Data Information System TECHNICAL CONTACT ORNL DAAC User Services ORNL DAAC USER SERVICES OFFICE OAK RIDGE NATIONAL LABORATORY OAK RIDGE, TENNESSEE 37831 USA DIF AUTHOR ORNL DAAC User Services ornldaac@ornl.gov (865) 241-3952 (865) 574-4665

ORNL DAAC User Services Office

P.O. Box 2008, MS 6407

Oak Ridge National Laboratory

Oak Ridge Tennessee 37831-6407 USA 2014-03-21 ORNL_DAAC THE OAK RIDGE NATIONAL LABORATORY (ORNL) DISTRIBUTED ACTIVE ARCHIVE CENTER (DAAC) http://daac.ornl.gov/ 1209 DATA CENTER CONTACT ORNL DAAC USER SERVICES ornldaac@ornl.gov +1(865)241-3952 +1(865)574-4665

ORNL DAAC USER SERVICES OFFICE

P.O. Box 2008, MS 6407

Oak Ridge National Laboratory

Oak Ridge Tennessee 37831-6407 USA EARTH SCIENCE TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY EARTH SCIENCE TERRESTRIAL HYDROSPHERE WATER QUALITY/WATER CHEMISTRY CARBON DIOXIDE GET DATA http://daac.ornl.gov/cgi-bin/dsviewer.pl?ds_id=1209 VIEW RELATED INFORMATION https://daac.ornl.gov//LBA/guides/LC07_Wetlands_fluxes.html LBA-ECO LC-07 CO2 and CH4 Flux from Wetlands, Negro River Basin, Brazil: 2004-2006 USA/NASA ENGLISH GCMD CEOS IDN DIF VERSION 9.0