Cutoff Lows over the Southeast Pacific off the Coast of the Atacama Desert under Present Day Conditions and in the Last Glacial Maximum
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Citation
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| Title: | Main Title: Cutoff Lows over the Southeast Pacific off the Coast of the Atacama Desert under Present Day Conditions and in the Last Glacial Maximum |
| Description: | Abstract: The large-scale climate over the Southeast Pacific off the coast of the Atacama Desert in South America is characterised by low synoptic variability. A rather rare but nonetheless prominent synoptic feature of this region are mid-tropospheric cutoff lows which form off the coast of northern Chile. These cutoff lows may influence the local climate in the Atacama Desert. For example, the March 2015 Atacama flood is associated to such a cutoff low together with a positive sea surface temperature anomaly over the eastern tropical Pacific, and we found evidence that the cutoff lows also impact local wind regimes at different sites of the Atacama Desert. In this study we aim to investigate the dynamical processes which favour the development of the cutoff lows over the Southeast Pacific. Case studies and composite analyses are performed using ERA-Interim reanalysis to highlight the role of upper-topospheric jets and Rossby Wave Breaking in the development of the cutoff lows. Further, the occurrence of the cutoff lows and the associated dynamical processes during the Last Glacial Maximum are analysed, as distinctly more cutoff lows are detected for the Last Glacial Maximum than under present day conditions in two PMIP3 models. |
Responsible Party
| Creator: | Mark Reyers (Author) |
| Publisher: | CRC1211 Database (CRC1211DB) |
| Publication Year: | 2019 |
Topic
| CRC1211 Topic: | Climate |
| Related Subproject: | A3 |
| Subject: | Keyword: Climate Models |
| Geogr. Information Topic: | Climatology/Meteorology/Atmosphere |
File Details
| Filename: | Poster_Reyers_EGU2018.pdf |
| Data Type: | Text - Text |
| File Size: | 3.2 MB |
| Date: | Created: 02.04.2018 |
| Mime Type: | application/pdf |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Free |
| General Access and Use Conditions: | According to the CRC1211DB data policy agreement. |
| Access Limitations: | According to the CRC1211DB data policy agreement. |
| Licence: | None |
Geographic
Specific Information - Presentation
| Presenter: | Mark Reyers |
| Presentation Date: | 12th of April, 2018 |
| Presentation Type: | Poster |
| Event: | EGU2018 |
| Event Type: | Conference |
| Event Location: | Vienna |
| Event Duration: | 7th of April, 2018 - 12th of April, 2018 |
Metadata Details
| Metadata Creator: | Mark Reyers |
| Metadata Created: | 23.05.2019 |
| Metadata Last Updated: | 23.05.2019 |
| Subproject: | A3 |
| Funding Phase: | 1 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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Dataset Statistics
| Page Visits: | 93 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 1 |
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