LATEST ADVANCES IN AEROSOL ABSORPTION AND ITS CLIMATE EFFECTS
Received date: 2002-11-08
Revised date: 2003-11-03
Online published: 2004-08-01
It's not enough to focus only on Top of Atomospheric (TOA) aerosol direct radiative forcing, especially for absorptive aerosol types such as smoke and dust aerosols. It's shown by INDOEX experiment that absorptive aerosol (mainly from anthropogenic productions) surface radiative forcing in magnitude is nearly 3 times more than that at TOA, the difference between them is the heating of atmosphere that contains absorptive aerosol. Combined with the heating of the atmospheric and reducing in earth's surface radiation due to aerosol absorption, evaporation and atmospheric stability may be affected and it is possible to influence hydrological cycle. Additionally, aborptive aerosol may produce cloud “burning effect”, then result in decreased cloud amount. Aerosol absorption has become the hot topic concerning aerosol's effects on climate. It's valuable to study aerosol absorption, since that there are large uncertainties and some inconsistency results have been obtained concerning aerosol absorption and its effects on climate. It's absolutely necessary to strengthen experiment and theory studies on aerosol absorption in China due to high occurrences of dust storms in north China and high concentration of black carbon (BC) in east China. The high concentration of BC is partly resulted by our energy consumption structure and relatively low energy consumption efficiency. It's shown by data and model analyses that aerosol absorption probably plays an important role in unique climate change in China with comparsion of in other region or globe. It's of significance to deepen our knowledge of aerosol radiative forcing and climate effects in China with the help of global or region climate model, at the same time, it's also helpful to estimate the environment and climate effects of pollution control measures taken by our country in recent years.
Key words： Absorption; Radiative forcing; Climate effect.
XIA Xiang-ao , WANG Ming-xing . LATEST ADVANCES IN AEROSOL ABSORPTION AND ITS CLIMATE EFFECTS[J]. Advances in Earth Science, 2004 , 19(4) : 630 -635 . DOI: 10.11867/j.issn.1001-8166.2004.04.0630
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