Cloud responses to climate variability over the extratropical oceans as observed by MISR and MODIS
<p>Linear temporal trends in cloud fraction over the extratropical oceans, observed by NASA's Multi-angle Imaging SpectroRadiometer (MISR) during the period from 2000 to 2013, are examined in the context of coincident European Centre for Medium-Range Weather Forecasts (ECMWF) reanalysis d...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2019-06-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | https://www.atmos-chem-phys.net/19/7547/2019/acp-19-7547-2019.pdf |
| Summary: | <p>Linear temporal trends in cloud fraction over the extratropical oceans, observed by
NASA's Multi-angle Imaging SpectroRadiometer (MISR) during the period from
2000 to 2013, are examined in the context of coincident European Centre for
Medium-Range Weather Forecasts (ECMWF) reanalysis data using a maximum
covariance analysis. Changes in specific cloud types defined with respect to
cloud-top height and cloud optical depth are related to trends in reanalysis
variables. A pattern of reduced high-altitude optically thick cloud and
increased low-altitude cloud of moderate optical depth is found to be
associated with increased temperatures, geopotential heights, and
anti-cyclonic flow over the extratropical oceans. These and other trends in
cloud occurrence are shown to be correlated with changes in the El
Niño–Southern Oscillation (ENSO), the Pacific Decadal Oscillation (PDO),
the North Pacific index (NPI), and the Southern Annular Mode (SAM).</p> |
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| ISSN: | 1680-7316 1680-7324 |