On Changes of Global Wet-bulb Temperature and Snowfall Regimes
To properly interpret the observed shrinkage of the Earth's cryosphere it is important to understand global changes of snowfall dominant regimes. To document these changes, three different reanalysis products of wet-bulb temperature together with observationally-based data sets are processed fr...
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Online Access: | https://dx.doi.org/10.48550/arxiv.1905.07776 https://arxiv.org/abs/1905.07776 |
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ftdatacite:10.48550/arxiv.1905.07776 2023-05-15T16:35:31+02:00 On Changes of Global Wet-bulb Temperature and Snowfall Regimes Tamang, Sagar K. Ebtehaj, Ardeshir M. Prein, Andreas F. Heymsfield, Andrew J. 2019 https://dx.doi.org/10.48550/arxiv.1905.07776 https://arxiv.org/abs/1905.07776 unknown arXiv arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ Applications stat.AP FOS Computer and information sciences Article CreativeWork article Preprint 2019 ftdatacite https://doi.org/10.48550/arxiv.1905.07776 2022-03-10T16:48:06Z To properly interpret the observed shrinkage of the Earth's cryosphere it is important to understand global changes of snowfall dominant regimes. To document these changes, three different reanalysis products of wet-bulb temperature together with observationally-based data sets are processed from 1979 to 2017. It is found that over the Northern Hemisphere (NH), the annual mean wet-bulb temperature has increased at a rate of 0.34$^\circ$C per decade (pd) over land and 0.35$^\circ$C pd over ocean, resulting in a reduction of the annual mean potential areas of snowfall dominant regimes by 0.52/0.34 million km$^2$pd over land/ocean. However, the changes in the Southern Hemisphere (SH) are less conclusive and more uncertain. Among the K$ö$ppen-Geiger climate classes, the highest warming trend is observed over the NH polar climate regimes. Over studied mountain regions, the Alps are warming at a faster rate compared to the Rockies, Andes and High Mountain Asia (HMA). Due to such warming, potential snowfall areas over the Alps is reducing at 3.64% pd followed by Rockies at 2.81 and HMA at 1.85% pd. On average, these mountain ranges have lost 0.02 million km$^2$pd of potential snowfall areas. The NH potential snowfall areas is retracting towards the North pole over the Central Asia and Europe at a rate of 0.45 and 0.7 degree pd. Furthermore, terrestrial regions over the NH including the Great Plains in the United States, Canadian provinces around the Hudson Bay, Central Siberian and Tibetan Plateaus, are losing as much as 4% of the solid proportion of the annual precipitation amount pd. : 9 figures Article in Journal/Newspaper Hudson Bay North Pole DataCite Metadata Store (German National Library of Science and Technology) Hudson Bay Hudson North Pole Geiger ENVELOPE(-62.900,-62.900,-64.300,-64.300) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
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unknown |
topic |
Applications stat.AP FOS Computer and information sciences |
spellingShingle |
Applications stat.AP FOS Computer and information sciences Tamang, Sagar K. Ebtehaj, Ardeshir M. Prein, Andreas F. Heymsfield, Andrew J. On Changes of Global Wet-bulb Temperature and Snowfall Regimes |
topic_facet |
Applications stat.AP FOS Computer and information sciences |
description |
To properly interpret the observed shrinkage of the Earth's cryosphere it is important to understand global changes of snowfall dominant regimes. To document these changes, three different reanalysis products of wet-bulb temperature together with observationally-based data sets are processed from 1979 to 2017. It is found that over the Northern Hemisphere (NH), the annual mean wet-bulb temperature has increased at a rate of 0.34$^\circ$C per decade (pd) over land and 0.35$^\circ$C pd over ocean, resulting in a reduction of the annual mean potential areas of snowfall dominant regimes by 0.52/0.34 million km$^2$pd over land/ocean. However, the changes in the Southern Hemisphere (SH) are less conclusive and more uncertain. Among the K$ö$ppen-Geiger climate classes, the highest warming trend is observed over the NH polar climate regimes. Over studied mountain regions, the Alps are warming at a faster rate compared to the Rockies, Andes and High Mountain Asia (HMA). Due to such warming, potential snowfall areas over the Alps is reducing at 3.64% pd followed by Rockies at 2.81 and HMA at 1.85% pd. On average, these mountain ranges have lost 0.02 million km$^2$pd of potential snowfall areas. The NH potential snowfall areas is retracting towards the North pole over the Central Asia and Europe at a rate of 0.45 and 0.7 degree pd. Furthermore, terrestrial regions over the NH including the Great Plains in the United States, Canadian provinces around the Hudson Bay, Central Siberian and Tibetan Plateaus, are losing as much as 4% of the solid proportion of the annual precipitation amount pd. : 9 figures |
format |
Article in Journal/Newspaper |
author |
Tamang, Sagar K. Ebtehaj, Ardeshir M. Prein, Andreas F. Heymsfield, Andrew J. |
author_facet |
Tamang, Sagar K. Ebtehaj, Ardeshir M. Prein, Andreas F. Heymsfield, Andrew J. |
author_sort |
Tamang, Sagar K. |
title |
On Changes of Global Wet-bulb Temperature and Snowfall Regimes |
title_short |
On Changes of Global Wet-bulb Temperature and Snowfall Regimes |
title_full |
On Changes of Global Wet-bulb Temperature and Snowfall Regimes |
title_fullStr |
On Changes of Global Wet-bulb Temperature and Snowfall Regimes |
title_full_unstemmed |
On Changes of Global Wet-bulb Temperature and Snowfall Regimes |
title_sort |
on changes of global wet-bulb temperature and snowfall regimes |
publisher |
arXiv |
publishDate |
2019 |
url |
https://dx.doi.org/10.48550/arxiv.1905.07776 https://arxiv.org/abs/1905.07776 |
long_lat |
ENVELOPE(-62.900,-62.900,-64.300,-64.300) |
geographic |
Hudson Bay Hudson North Pole Geiger |
geographic_facet |
Hudson Bay Hudson North Pole Geiger |
genre |
Hudson Bay North Pole |
genre_facet |
Hudson Bay North Pole |
op_rights |
arXiv.org perpetual, non-exclusive license http://arxiv.org/licenses/nonexclusive-distrib/1.0/ |
op_doi |
https://doi.org/10.48550/arxiv.1905.07776 |
_version_ |
1766025749035220992 |