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| Titel |
Aerosol effects on climate in China: a consistent picture? |
| VerfasserIn |
Doris Folini, Martin Wild |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250078834
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| Zusammenfassung |
| Population growth and industrialization in China in recent decades were accompanied by a substantial increase in aerosol emissions. Corresponding inventory data as well as consequences of increasing aerosol emissions are debated on the quantitative level, e.g. urbanization effects in observed data. We use transient sensitivity studies with the global atmosphere only climate model ECHAM5-HAM (aerosol emission data from NIES, the National Institute of Environmental Studies, Japan; prescribed, observation based sea surface temperatures (SSTs) from the Hadley Center) to investigate the effect of different aerosol emissions on surface solar radiation (SSR), surface air temperature (SAT), and precipitation. Observed and modeled SSR show a decrease of around -7 W/m2 in eastern parts of China, before increasing again in the late 1990s. Modeled SAT reflects the decrease in SSR in recent decades but carries also a substantial SST signature, in particular in the first half of the 20th century. Modeled precipitation decreases under the influence of increasing aerosol emissions, the 'northern drought, southern flood' pattern gets lost. We discuss how modeled changes due to increasing aerosol emissions compare with observations and what this may imply for the prescribed aerosol emissions, the model results, and the observed data. |
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