Means and Long-Term Trends of Global Coastal Zone Precipitation

Abstract Precipitation in the coastal zone is important to the socio-economic and ecological well-being of the world. Meteorologically, precipitation is generated by unique mechanisms at the land-sea interface, which is why coastal zone precipitation is not well resolved by global climate models. Ye...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autor principal:	Scott Curtis
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2019
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c17fb6c4a39d44ef8d4e6c26bec170d7
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c17fb6c4a39d44ef8d4e6c26bec170d7
record_format	dspace
spelling	oai:doaj.org-article:c17fb6c4a39d44ef8d4e6c26bec170d72021-12-02T15:09:14ZMeans and Long-Term Trends of Global Coastal Zone Precipitation10.1038/s41598-019-41878-82045-2322https://doaj.org/article/c17fb6c4a39d44ef8d4e6c26bec170d72019-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-019-41878-8https://doaj.org/toc/2045-2322Abstract Precipitation in the coastal zone is important to the socio-economic and ecological well-being of the world. Meteorologically, precipitation is generated by unique mechanisms at the land-sea interface, which is why coastal zone precipitation is not well resolved by global climate models. Yet, to date, much more effort has been placed in analyzing global precipitation over the oceans and land. In this study, global coastal zone precipitation is quantified by selecting Global Precipitation Climatology Centre V2018 0.5° grid cells in 50 km zones from the shoreline into the interior. The transition from maritime to continental precipitation regimes is revealed in the long-term (1931–2010) average, as there is a pronounced coast-to-interior decline in rainfall from approximately 911.5 mm yr−1 within 50 km of the coast to 727.2 mm yr−1 from 100 to 150 km away from the coast. Globally, coastal zone precipitation peaks in boreal summer, extending into fall for precipitation at the coastline. Dividing the long-term record into early and late 40-year periods reveals an increasing trend in precipitation in the coastal zone, with the interior increasing faster than at the coastline. Averaging over 30-year climate normals from 1931–60 to 1981–2010 further confirms this result. A seasonal analysis reveals that the upward trends, and discrepancy between the coast and inland are maximized in the austral summer season. Interestingly, from May to September there is a declining trend in rainfall at the coastline, whereas the interior only shows minimal declines in August and September. Potential forcing mechanisms that could favor a wetter interior coastal zone include changes in the sea breeze circulation, urban heat island effect, or precipitation content associated with synoptic systems or monsoonal circulations.Scott CurtisNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Scott Curtis Means and Long-Term Trends of Global Coastal Zone Precipitation
description	Abstract Precipitation in the coastal zone is important to the socio-economic and ecological well-being of the world. Meteorologically, precipitation is generated by unique mechanisms at the land-sea interface, which is why coastal zone precipitation is not well resolved by global climate models. Yet, to date, much more effort has been placed in analyzing global precipitation over the oceans and land. In this study, global coastal zone precipitation is quantified by selecting Global Precipitation Climatology Centre V2018 0.5° grid cells in 50 km zones from the shoreline into the interior. The transition from maritime to continental precipitation regimes is revealed in the long-term (1931–2010) average, as there is a pronounced coast-to-interior decline in rainfall from approximately 911.5 mm yr−1 within 50 km of the coast to 727.2 mm yr−1 from 100 to 150 km away from the coast. Globally, coastal zone precipitation peaks in boreal summer, extending into fall for precipitation at the coastline. Dividing the long-term record into early and late 40-year periods reveals an increasing trend in precipitation in the coastal zone, with the interior increasing faster than at the coastline. Averaging over 30-year climate normals from 1931–60 to 1981–2010 further confirms this result. A seasonal analysis reveals that the upward trends, and discrepancy between the coast and inland are maximized in the austral summer season. Interestingly, from May to September there is a declining trend in rainfall at the coastline, whereas the interior only shows minimal declines in August and September. Potential forcing mechanisms that could favor a wetter interior coastal zone include changes in the sea breeze circulation, urban heat island effect, or precipitation content associated with synoptic systems or monsoonal circulations.
format	article
author	Scott Curtis
author_facet	Scott Curtis
author_sort	Scott Curtis
title	Means and Long-Term Trends of Global Coastal Zone Precipitation
title_short	Means and Long-Term Trends of Global Coastal Zone Precipitation
title_full	Means and Long-Term Trends of Global Coastal Zone Precipitation
title_fullStr	Means and Long-Term Trends of Global Coastal Zone Precipitation
title_full_unstemmed	Means and Long-Term Trends of Global Coastal Zone Precipitation
title_sort	means and long-term trends of global coastal zone precipitation
publisher	Nature Portfolio
publishDate	2019
url	https://doaj.org/article/c17fb6c4a39d44ef8d4e6c26bec170d7
work_keys_str_mv	AT scottcurtis meansandlongtermtrendsofglobalcoastalzoneprecipitation
_version_	1718387899715551232

Means and Long-Term Trends of Global Coastal Zone Precipitation

Ejemplares similares