Journal of University of Chinese Academy of Sciences >
Precipitation, Cloud and Atmospheric CO2Interannual Variability
Received date: 2004-01-02
Revised date: 2004-03-15
Online published: 2005-05-15
Observation data show large interannual variability of atmospheric CO2.By analyzing yearly mean observation data of global precipitation and atmospheric CO2mixing ratio at Mauna Loa Observatory, we have found a significant positive correlation between the interannual variability of CO2growth rate and the year-to-year changes in global land precipitation.We suggest that this positive correlation results mainly from the influence of clouds in Monsoon areas on terrestrial net ecosystem production (NEP).Here a set of monthly mean data of temperature, precipitation and atmospheric CO2 is used to reanalyze their relationships.In addition, we use satellite-based monthly grid cloud data over the period of 1984～ 1993 to study its relationship with atmospheric CO2 and find that the interannual variability of atmospheric CO2matches cloud cover growth rate.
Key words： CO2; precipitation; cloud; growth rate
LI Yang-Chun , YANG Xin , WANG Ming-Xing , XU Yong-Fu . Precipitation, Cloud and Atmospheric CO2Interannual Variability[J]. Journal of University of Chinese Academy of Sciences, 2005 , 22(3) : 394 -399 . DOI: 10.7523/j.issn.2095-6134.2005.3.020
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