Investigating Wintertime GPM‐IMERG Precipitation in the North Atlantic
Abstract Precipitation is expected to increase in a warming climate, which can have profound impacts on local and global hydrologic budgets. However, the precipitation in high latitudes remains highly uncertain. We compare wintertime precipitation in the North Atlantic using GPM‐IMERG, GPCP, MERRA‐2...
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| Format: | Article |
| Language: | English |
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Wiley
2021-10-01
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| Series: | Geophysical Research Letters |
| Online Access: | https://doi.org/10.1029/2021GL095391 |
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| _version_ | 1850211239287848960 |
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| author | Linette Boisvert Mircea Grecu Chung‐Lin Shie |
| author_facet | Linette Boisvert Mircea Grecu Chung‐Lin Shie |
| author_sort | Linette Boisvert |
| collection | DOAJ |
| description | Abstract Precipitation is expected to increase in a warming climate, which can have profound impacts on local and global hydrologic budgets. However, the precipitation in high latitudes remains highly uncertain. We compare wintertime precipitation in the North Atlantic using GPM‐IMERG, GPCP, MERRA‐2 and ERA5 between 2000–2019 and show that while interannual variations between products are similar, large differences in magnitudes exist, specifically in areas of higher precipitation where Integrated Multi‐satellitE Retrievals for GPM (IMERG) produces an excess of 2 mm day−1. EOF analysis demonstrates observations and reanalyses show similar spatial variability in the most dominant precipitation patterns and are highly correlated (r = −0.6) with the North Atlantic Oscillation. Analysis of IMERG extreme precipitation further shows that it is most densely populated in this same area where large discrepancies in magnitudes between products exist. IMERG extreme precipitation was found to drive the monthly anomalies. Future work needs to be focused on extreme precipitation characteristics, patterns and the driving atmospheric factors. |
| format | Article |
| id | doaj-art-d3d94cab9082479683bb2c8cf20ae56e |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2021-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-d3d94cab9082479683bb2c8cf20ae56e2025-08-20T02:09:35ZengWileyGeophysical Research Letters0094-82761944-80072021-10-014820n/an/a10.1029/2021GL095391Investigating Wintertime GPM‐IMERG Precipitation in the North AtlanticLinette Boisvert0Mircea Grecu1Chung‐Lin Shie2NASA Goddard Space Flight Center Greenbelt MD USANASA Goddard Space Flight Center Greenbelt MD USANASA Goddard Space Flight Center Greenbelt MD USAAbstract Precipitation is expected to increase in a warming climate, which can have profound impacts on local and global hydrologic budgets. However, the precipitation in high latitudes remains highly uncertain. We compare wintertime precipitation in the North Atlantic using GPM‐IMERG, GPCP, MERRA‐2 and ERA5 between 2000–2019 and show that while interannual variations between products are similar, large differences in magnitudes exist, specifically in areas of higher precipitation where Integrated Multi‐satellitE Retrievals for GPM (IMERG) produces an excess of 2 mm day−1. EOF analysis demonstrates observations and reanalyses show similar spatial variability in the most dominant precipitation patterns and are highly correlated (r = −0.6) with the North Atlantic Oscillation. Analysis of IMERG extreme precipitation further shows that it is most densely populated in this same area where large discrepancies in magnitudes between products exist. IMERG extreme precipitation was found to drive the monthly anomalies. Future work needs to be focused on extreme precipitation characteristics, patterns and the driving atmospheric factors.https://doi.org/10.1029/2021GL095391 |
| spellingShingle | Linette Boisvert Mircea Grecu Chung‐Lin Shie Investigating Wintertime GPM‐IMERG Precipitation in the North Atlantic Geophysical Research Letters |
| title | Investigating Wintertime GPM‐IMERG Precipitation in the North Atlantic |
| title_full | Investigating Wintertime GPM‐IMERG Precipitation in the North Atlantic |
| title_fullStr | Investigating Wintertime GPM‐IMERG Precipitation in the North Atlantic |
| title_full_unstemmed | Investigating Wintertime GPM‐IMERG Precipitation in the North Atlantic |
| title_short | Investigating Wintertime GPM‐IMERG Precipitation in the North Atlantic |
| title_sort | investigating wintertime gpm imerg precipitation in the north atlantic |
| url | https://doi.org/10.1029/2021GL095391 |
| work_keys_str_mv | AT linetteboisvert investigatingwintertimegpmimergprecipitationinthenorthatlantic AT mirceagrecu investigatingwintertimegpmimergprecipitationinthenorthatlantic AT chunglinshie investigatingwintertimegpmimergprecipitationinthenorthatlantic |