Tropical mid-tropospheric CO 2 variability driven by the Madden–Julian oscillation
- 26 October 2010
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 107 (45), 19171-19175
- https://doi.org/10.1073/pnas.1008222107
Abstract
Carbon dioxide (CO(2)) is the most important anthropogenic greenhouse gas in the present-day climate. Most of the community focuses on its long-term (decadal to centennial) behaviors that are relevant to climate change, but there are relatively few discussions of its higher-frequency forms of variability, and none regarding its subseasonal distribution. In this work, we report a large-scale intraseasonal variation in the Atmospheric Infrared Sounder CO(2) data in the global tropical region associated with the Madden-Julian oscillation (MJO). The peak-to-peak amplitude of the composite MJO modulation is ∼1 ppmv, with a standard error of the composite mean < 0.1 ppmv. The correlation structure between CO(2) and rainfall and vertical velocity indicate positive (negative) anomalies in CO(2) arise due to upward (downward) large-scale vertical motions in the lower troposphere associated with the MJO. These findings can help elucidate how faster processes can organize, transport, and mix CO(2) and provide a robustness test for coupled carbon-climate models.Keywords
This publication has 26 references indexed in Scilit:
- Interannual variability of mid‐tropospheric CO2 from Atmospheric Infrared SounderGeophysical Research Letters, 2010
- Vertical Heating Structures Associated with the MJO as Characterized by TRMM Estimates, ECMWF Reanalyses, and Forecasts: A Case Study during 1998/99 WinterJournal of Climate, 2009
- Worldwide Measurements of Atmospheric CO2 and Other Trace Gas Species Using Commercial AirlinesJournal of Atmospheric and Oceanic Technology, 2008
- Satellite remote sounding of mid‐tropospheric CO2Geophysical Research Letters, 2008
- Intraseasonal variations of the tropical total ozone and their connection to the Madden‐Julian OscillationGeophysical Research Letters, 2007
- Subseasonal organization of ocean chlorophyll: Prospects for prediction based on the Madden‐Julian OscillationGeophysical Research Letters, 2005
- On the determination of atmospheric minor gases by the method of vanishing partial derivatives with application to CO2Geophysical Research Letters, 2005
- Madden‐Julian OscillationReviews of Geophysics, 2005
- The utility of remotely sensed CO2 concentration data in surface source inversionsGeophysical Research Letters, 2001
- Evidence for interannual variability of the carbon cycle from the National Oceanic and Atmospheric Administration/Climate Monitoring and Diagnostics Laboratory Global Air Sampling NetworkJournal of Geophysical Research: Atmospheres, 1994