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https://hdl.handle.net/123456789/1394| Τύπος: | Άρθρο σε επιστημονικό περιοδικό |
| Τίτλος: | A global climatology of tropopause folds in CAMS and MERRA-2 reanalyses |
| Συγγραφέας: | [EL] Ακριτίδης, Δημήτριος[EN] Akritidis, Dimitrios [EN] Pozzer, Andrea [EN] Flemming, Johannes [EN] Inness, Antje [EL] Ζάνης, Πρόδρομος[EN] Zanis, Prodromos |
| Ημερομηνία: | 19/03/2021 |
| Περίληψη: | Tropopause folds are the main mechanism underlying stratosphere-to-troposphere transport and influence tropospheric composition and weather systems by triggering convection. Here, we present the global climatology of tropopause folds in Copernicus Atmosphere Monitoring Service (CAMS) and Modern-Era Retrospective analysis for Research and Applications, version 2 (MERRA-2) reanalysis of atmospheric composition products for the time period from 2003 to 2018. We applied a 3-D labeling algorithm in CAMS and MERRA-2 reanalysis data to detect tropopause folding events. In constructing their climatologies, we show that the bulk of the folds are vertically shallow and are mainly found at the subtropical zones in the vicinity of the jet streams, while deeper folds also occur over the storm tracks, consistent with previous studies. The spatiotemporal characteristics of fold climatology are captured in a similar manner in CAMS and MERRA-2, with MERRA-2 capturing slightly higher frequencies during all seasons. In quantitative terms, there is a good agreement between CAMS and MERRA-2 fold frequencies with spatiotemporal R2 values of ∼0.9 for DJF, MAM, and JJA, and 0.75 for SON. The two reanalysis products are in close agreement regarding the intra- and interannual variability in fold frequency, with temporal correlation scores higher than 0.7 over the subtropical bands where the majority of folds are found. The agreement between the two reanalyses is lower in the Southern Hemisphere compared to the Northern Hemisphere. Thus, the global climatology of tropopause folds in both CAMS and MERRA-2 reanalyses are similar to those of previous studies. |
| Γλώσσα: | Αγγλικά |
| Σελίδες: | 16 |
| DOI: | 10.1029/2020JD034115 |
| EISSN: | 2169-8996 |
| Θεματική κατηγορία: | [EL] Μετεωρολογία και Επιστήμες της ατμόσφαιρας[EN] Meteorology and Atmospheric Sciences |
| Κάτοχος πνευματικών δικαιωμάτων: | © 2021. The Authors |
| Όροι και προϋποθέσεις δικαιωμάτων: | This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
| Ηλεκτρονική διεύθυνση του τεκμηρίου στον εκδότη: | https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JD034115 |
| Ηλεκτρονική διεύθυνση περιοδικού: | https://agupubs.onlinelibrary.wiley.com/journal/21698996 |
| Τίτλος πηγής δημοσίευσης: | Journal of Geophysical Research: Atmospheres |
| Τεύχος: | 8 |
| Τόμος: | 126 |
| Σελίδες τεκμηρίου (στην πηγή): | Article no e2020JD034115 |
| Σημειώσεις: | This research is co-financed by Greece and the European Union (European Social Fund—ESF) through the Operational Programme «Human Resources Development, Education and Lifelong Learning» in the context of the project “Reinforcement of Postdoctoral Researchers - 2nd Cycle” (MIS-5033021), implemented by the State Scholarships Foundation (IKY). |
| Εμφανίζεται στις συλλογές: | Μεταδιδακτορικοί ερευνητές |
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| Αρχείο | Περιγραφή | Σελίδες | Μέγεθος | Μορφότυπος | Έκδοση | Άδεια | |
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| JGR_Akritidis_et_al_2021.pdf | 15.85 MB | Adobe PDF | - |  | Δείτε/ανοίξτε |