Low-Level-Jet and Inversion statistics for Weddell Sea region of Antarctica

DOI

This data set is a climatology (2002–2016) of low level jet (LLJ) and inversion parameters for the Weddell Sea region of Antarctica. Mean (Summer=April-Sept., Winter=Dez.-Jan., Annual) values were computed from hourly COSMO-CLM model output. To detect a LLJ the lowest 1 km of the atmosphere was searched for a wind maximum (>2m/s than above and below) and the following parameters were taken: height (m) and wind speed (m/s) of the wind maximum, relative wind speed increase (compared to above and below), and the difference (LLJ-height minus near-surface-height) of potential temperature (K) and wind direction (°). To detect an inversion the lowest 1 km of the atmosphere was searched for the point where the potential temperature gradient dropped below 2 K/100 m and the following parameters were taken: height (m) of the inversion and strengh (K) defined as difference of potential temperature (inversion-height minus near-surface-height). The frequency (%) gives fraction of time a LLJ / inversion was detected. Furthermore the dataset of the mean wind field at 10 m above ground was added.For more detail and the exact description on the search algorithm see doi:10.3390/atmos12121635. For more details on the simulation see doi:10.5194/gmd-13-1809-2020.

Acknowledgments: The COSMO-CLM model was provided by the German Meteorological Service and the CLM community. Computing time was provided by Deutsches Klimarechenzentrum (DKRZ).

Identifier
DOI https://doi.org/10.1594/PANGAEA.940364
Related Identifier https://doi.org/10.3390/atmos12121635
Related Identifier https://doi.org/10.5194/gmd-13-1809-2020
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.940364
Provenance
Creator Zentek, Rolf ORCID logo; Heinemann, Günther ORCID logo
Publisher PANGAEA
Publication Year 2022
Funding Reference German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID 5472008 https://gepris.dfg.de/gepris/projekt/5472008 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas; German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID HE 2740/33 https://gepris.dfg.de/gepris/projekt/424367259 Regional high-resolution Downscaling of Climate Change in the Antarctic (REDOCCA)
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 16 data points
Discipline Earth System Research
Spatial Coverage (-38.000 LON, -70.000 LAT)