Sulfate aerosol distributions and cloud variations during El Niño anomalies
| Autor: | Bruce B. Hicks, Farn P. Parungo |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Atmospheric Science
Cloud cover Soil Science Climate change Aquatic Science Oceanography Atmospheric sciences complex mixtures chemistry.chemical_compound Geochemistry and Petrology Earth and Planetary Sciences (miscellaneous) Cloud condensation nuclei Sulfate aerosol Sulfate Sea salt aerosol Earth-Surface Processes Water Science and Technology Ecology Paleontology Forestry Albedo Aerosol Geophysics chemistry Space and Planetary Science Climatology Environmental science sense organs |
| Zdroj: | Journal of Geophysical Research: Atmospheres. 98:2667-2675 |
| ISSN: | 0148-0227 |
| DOI: | 10.1029/92jd02434 |
| Popis: | The effects of aerosols on cloud characteristics, albedo, rainfall amount, and overall climate changes were investigated by assessing the qualitative associations and quantitative correlations between the relevant variables during El Nino-Southern Oscillation (ENSO) perturbations. Both historical records and data from recent field measurements for the Pacific Ocean region were used for the investigation. The results show that ENSO perturbations could change sulfate aerosol production and distribution over the surveyed regions. Strong correlations were observed between condensation nucleus concentrations and sulfate aerosol concentrations, and between cloud amount and albedo. Weak but significant correlations were also observed between condensation nucleus concentrations and cloud amounts, and between sulfate aerosol concentrations and rainfall amounts. Although sulfate aerosols appeared to have a strong impact on cloud microphysics, the present data confirm that cloud dynamics play the pivotal role in control of cloud types and cloud amount in the studied regions. |
| Databáze: | OpenAIRE |
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