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

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 sear...

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Bibliographic Details
Main Authors: Zentek, Rolf, Heinemann, Günther
Format: Dataset
Language:English
Published: PANGAEA 2022
Subjects:
Antarctica
inversion
low level jet
Weddell Sea
wind
File content
Binary Object
Binary Object File Size
Binary Object MD5 Hash
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158
Arctic
Antarctic
Weddell
Antarc*
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.940364
https://doi.pangaea.de/10.1594/PANGAEA.940364
Description
Summary: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. ... : Acknowledgments: The COSMO-CLM model was provided by the German Meteorological Service and the CLM community. Computing time was provided by Deutsches Klimarechenzentrum (DKRZ). ...

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