Precipitation, Cloud and Atmospheric CO2Interannual Variability

doi:10.7523/j.issn.2095-6134.2005.3.020

Abstract

Abstract:

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

CLC Number:

LI Yang-Chun, YANG Xin, WANG Ming-Xing, XU Yong-Fu. Precipitation, Cloud and Atmospheric CO₂Interannual Variability[J]. , 2005, 22(3): 394-399.

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Precipitation, Cloud and Atmospheric CO₂Interannual Variability

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