Effects of Ocean Ecosystem on Marine Aerosol-Cloud Interaction
Using satellite data for the surface ocean, aerosol optical depth (AOD), and cloud microphysical parameters, we show that statistically significant positive correlations exist between ocean ecosystem productivity, the abundance of submicron aerosols, and cloud microphysical properties over different...
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| Format: | Article |
| Language: | English |
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Wiley
2010-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2010/239808 |
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| author | Nicholas Meskhidze Athanasios Nenes |
| author_facet | Nicholas Meskhidze Athanasios Nenes |
| author_sort | Nicholas Meskhidze |
| collection | DOAJ |
| description | Using satellite data for the surface ocean, aerosol optical depth (AOD), and cloud microphysical parameters, we show that statistically significant positive correlations exist between ocean ecosystem productivity, the abundance of submicron aerosols, and cloud microphysical properties over different parts of the remote oceans. The correlation coefficient for remotely sensed surface chlorophyll a concentration ([Chl-a]) and liquid cloud effective radii over productive areas of the oceans varies between −0.2 and −0.6. Special attention is given to identifying (and addressing) problems from correlation analysis used in the previous studies that can lead to erroneous conclusions. A new approach (using the difference between retrieved AOD and predicted sea salt aerosol optical depth, AODdiff) is developed to explore causal links between ocean physical and biological systems and the abundance of cloud condensation nuclei (CCN) in the remote marine atmosphere. We have found that over multiple time periods, 550 nm AODdiff (sensitive to accumulation mode aerosol, which is the prime contributor to CCN) correlates well with [Chl-a] over the productive waters of the Southern Ocean. Since [Chl-a] can be used as a proxy of ocean biological productivity, our analysis demonstrates the role of ocean ecology in contributing CCN, thus shaping the microphysical properties of low-level marine clouds. |
| format | Article |
| id | doaj-art-07c09a43fbd2487da0d9211a7888ed8f |
| institution | OA Journals |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-07c09a43fbd2487da0d9211a7888ed8f2025-08-20T02:01:35ZengWileyAdvances in Meteorology1687-93091687-93172010-01-01201010.1155/2010/239808239808Effects of Ocean Ecosystem on Marine Aerosol-Cloud InteractionNicholas Meskhidze0Athanasios Nenes1Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USASchool of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA 30332, USAUsing satellite data for the surface ocean, aerosol optical depth (AOD), and cloud microphysical parameters, we show that statistically significant positive correlations exist between ocean ecosystem productivity, the abundance of submicron aerosols, and cloud microphysical properties over different parts of the remote oceans. The correlation coefficient for remotely sensed surface chlorophyll a concentration ([Chl-a]) and liquid cloud effective radii over productive areas of the oceans varies between −0.2 and −0.6. Special attention is given to identifying (and addressing) problems from correlation analysis used in the previous studies that can lead to erroneous conclusions. A new approach (using the difference between retrieved AOD and predicted sea salt aerosol optical depth, AODdiff) is developed to explore causal links between ocean physical and biological systems and the abundance of cloud condensation nuclei (CCN) in the remote marine atmosphere. We have found that over multiple time periods, 550 nm AODdiff (sensitive to accumulation mode aerosol, which is the prime contributor to CCN) correlates well with [Chl-a] over the productive waters of the Southern Ocean. Since [Chl-a] can be used as a proxy of ocean biological productivity, our analysis demonstrates the role of ocean ecology in contributing CCN, thus shaping the microphysical properties of low-level marine clouds.http://dx.doi.org/10.1155/2010/239808 |
| spellingShingle | Nicholas Meskhidze Athanasios Nenes Effects of Ocean Ecosystem on Marine Aerosol-Cloud Interaction Advances in Meteorology |
| title | Effects of Ocean Ecosystem on Marine Aerosol-Cloud Interaction |
| title_full | Effects of Ocean Ecosystem on Marine Aerosol-Cloud Interaction |
| title_fullStr | Effects of Ocean Ecosystem on Marine Aerosol-Cloud Interaction |
| title_full_unstemmed | Effects of Ocean Ecosystem on Marine Aerosol-Cloud Interaction |
| title_short | Effects of Ocean Ecosystem on Marine Aerosol-Cloud Interaction |
| title_sort | effects of ocean ecosystem on marine aerosol cloud interaction |
| url | http://dx.doi.org/10.1155/2010/239808 |
| work_keys_str_mv | AT nicholasmeskhidze effectsofoceanecosystemonmarineaerosolcloudinteraction AT athanasiosnenes effectsofoceanecosystemonmarineaerosolcloudinteraction |