A54D-04
Dynamics of Carbon Dioxide Exchange and Transport: The First Year of OCO-2 Observations
Friday, 18 December 2015: 16:45
3012 (Moscone West)
Paul O Wennberg1, Debra Wunch2, Christopher O'Dell3, Christian Frankenberg4, Brenden Fisher5, Lukas Mandrake5, Gregory B Osterman5, Annmarie Eldering5, David Crisp5, Michael R Gunson5 and TCCON Partners, (1)California Institute of Technology, Division of Engineering and Applied Science, Pasadena, CA, United States, (2)California Institute of Technology, Pasadena, CA, United States, (3)Colorado State University, Fort Collins, CO, United States, (4)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (5)NASA Jet Propulsion Laboratory, Pasadena, CA, United States
Abstract:
We describe observed gradients in space and time in the total column measurements of carbon dioxide (XCO2) during the first year of the OCO-2 mission.Writing this abstract in July, we make several predictions that will be tested in the coming months (in order to bat at least 0.500 while mixing metaphors we include some slam dunks): 1) Global XCO2 in Oct/Nov 2015 is larger than XCO2 in Oct/Nov 2014; 2) Averaged over the year, XCO2 in the Northern Hemisphere is greater than XCO2 in the Southern Hemisphere; 3) The increase in global atmospheric carbon dioxide during 2014/15 will be the largest on record due to a combination of increased fossil emissions and the intensifying El Nino [e.g. Wang et al., PNAS, 110, 13061, 2013]; 4) Summertime drawdown in Northern Hemisphere carbon dioxide will be muted compared with past years due to enhanced transport from the subtropics and enhanced respiration in the Boreal forest associated with anomalously warm surface temperatures at high latitudes in summer 2015 [e.g. Wunch et al., ACP, 13, 9447, 2012].
