Atmospheric blockings in Coupled Model Intercomparison Project Phase 5 models with different representations of Antarctic sea ice extent
| العنوان: | Atmospheric blockings in Coupled Model Intercomparison Project Phase 5 models with different representations of Antarctic sea ice extent |
|---|---|
| المؤلفون: | CARPENEDO,CAMILA B., AMBRIZZI,TÉRCIO |
| المصدر: | Anais da Academia Brasileira de Ciências, Volume: 94 Supplement 1, Article number: e20210432, Published: 30 MAY 2022 Anais da Academia Brasileira de Ciências v.94 suppl.1 2022 Anais da Academia Brasileira de Ciências Academia Brasileira de Ciências (ABC) instacron:ABC |
| بيانات النشر: | Academia Brasileira de Ciências, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Atmospheric blockings, Antarctica, CMIP5, sea ice |
| الوصف: | This study investigated whether there are differences in the frequency and position of Southern Hemisphere atmospheric blockings between Coupled Model Intercomparison Project Phase 5 models with different representations of Antarctic sea ice extent in historical experiments. In the model with the greatest sea ice underestimation (Model for Interdisciplinary Research on Climate version 5) there is a weakening of the polar jet and an increase in 500-hPa height. These atmospheric conditions favor the predomination of simulated blocking frequency overestimations (autumn-winter), in relation to the observed (ERA-Interim). On the other hand, in the models with the greatest sea ice overestimations (Community Climate System Model version 4) and the better sea ice representation (Norwegian Earth System Model version 1) there is a strengthening of the polar jet and weaker positive differences in 500-hPa height in the Antarctic region. These atmospheric conditions favor a predominance of simulated blocking frequency underestimations (all seasons). All models present a good representation of the preferred blocking regions (South Pacific), although they do not represent the longitudinal location of the maximum frequency. In years of sea ice retraction (expansion), there is a predominance of a higher (lower) blocking frequency in the 60°S for all models and observed data. |
| وصف الملف: | text/html |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::af9d1143457638a153aa8bdc18bbf0ff http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652022000201120&lng=en&tlng=en |
| Rights: | OPEN |
| رقم الانضمام: | edsair.dedup.wf.001..af9d1143457638a153aa8bdc18bbf0ff |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |