Wednesday, 10 January 2018
Exhibit Hall 3 (ACC) (Austin, Texas)
Most researches of impacts of CO2 on global climate changes have been focusing on the significant increasing global CO2 concentration which is mainly due to the human activities. Satellite observations show that the spatial distribution of CO2 exists at various temporal scales. Using both GOSAT data and AIRS data for the period 200907-201104, this paper analyzed the spatial pattern of CO2 and the impact of El Nino -Southern Oscillation (ENSO) on the CO2 spatial patterns. The CO2 temporal variability is in agree with the single-site record of CO2 at Mauna Loa. An EOF decomposition of CO2 spatial patterns is consistent with the previous study, but the ENSO signal is not clear. By analyzing the differences in the spatial variation of detrended CO2 concentrations during ENSO different episodes, our results showed the center of Northeastern of North America, Central Pacific, Australia and North parts of Asia have higher CO2 values in warm episode. Significant spatial variations of CO2 occur over high latitudes in the onset phase of ENSO. The centers of CO2 variations shift to middle and low latitudes during ENSO prevail stage, especially in the Atlantic and the Pacific Ocean, with more remarkable larger variations in warm period. In the ENSO decay phase, the difference between warm episodes and cold episodes is small. Our study demonstrates that the impacts of ENSO on CO2 spatial patterns are significant which require further investigate.
- Indicates paper has been withdrawn from meeting
- Indicates an Award Winner