Investigating annual and monthly trends in precipitation structure: an overview across Portugal
This work investigates recent changes in precipitation patterns manifested in long annual and monthly precipitation time series recorded in Portugal. The dataset comprises records from 14 meteorological stations scattered over mainland Portugal and the Portuguese North Atlantic Islands of Madeira an...
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ftdoajarticles:oai:doaj.org/article:656d02e3be124633b8472e6c18a8cfe4 2023-05-15T17:33:27+02:00 Investigating annual and monthly trends in precipitation structure: an overview across Portugal M. I. P. de Lima S. C. P. Carvalho J. L. M. P. de Lima 2010-11-01T00:00:00Z https://doi.org/10.5194/nhess-10-2429-2010 https://doaj.org/article/656d02e3be124633b8472e6c18a8cfe4 EN eng Copernicus Publications http://www.nat-hazards-earth-syst-sci.net/10/2429/2010/nhess-10-2429-2010.pdf https://doaj.org/toc/1561-8633 https://doaj.org/toc/1684-9981 doi:10.5194/nhess-10-2429-2010 1561-8633 1684-9981 https://doaj.org/article/656d02e3be124633b8472e6c18a8cfe4 Natural Hazards and Earth System Sciences, Vol 10, Iss 11, Pp 2429-2440 (2010) Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 article 2010 ftdoajarticles https://doi.org/10.5194/nhess-10-2429-2010 2022-12-31T04:47:23Z This work investigates recent changes in precipitation patterns manifested in long annual and monthly precipitation time series recorded in Portugal. The dataset comprises records from 14 meteorological stations scattered over mainland Portugal and the Portuguese North Atlantic Islands of Madeira and Azores; some of the time series date back to the 19th century. The data were tested for trends using the Mann-Kendall non-parametric test and Sen's non-parametric method, searching both for full monotonic trends over the record period and for partial trends. Results provide no evidence for rejecting the null hypothesis of no trend in annual precipitation, when a monotonic linear model was used. Nevertheless, the analyses of 50 years' moving averages showed an increase over time, in the recent past, for many of the series in mainland Portugal and the Islands. For the longest time series this behaviour was preceded by a decrease over time. The analyses of partial trends in the time series suggested a sequence of alternately decreasing and increasing trends in annual and monthly precipitation, which are sometimes statistically significant. The trend changing points were identified. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Kendall ENVELOPE(-59.828,-59.828,-63.497,-63.497) Natural Hazards and Earth System Sciences 10 11 2429 2440 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 M. I. P. de Lima S. C. P. Carvalho J. L. M. P. de Lima Investigating annual and monthly trends in precipitation structure: an overview across Portugal |
topic_facet |
Environmental technology. Sanitary engineering TD1-1066 Geography. Anthropology. Recreation G Environmental sciences GE1-350 Geology QE1-996.5 |
description |
This work investigates recent changes in precipitation patterns manifested in long annual and monthly precipitation time series recorded in Portugal. The dataset comprises records from 14 meteorological stations scattered over mainland Portugal and the Portuguese North Atlantic Islands of Madeira and Azores; some of the time series date back to the 19th century. The data were tested for trends using the Mann-Kendall non-parametric test and Sen's non-parametric method, searching both for full monotonic trends over the record period and for partial trends. Results provide no evidence for rejecting the null hypothesis of no trend in annual precipitation, when a monotonic linear model was used. Nevertheless, the analyses of 50 years' moving averages showed an increase over time, in the recent past, for many of the series in mainland Portugal and the Islands. For the longest time series this behaviour was preceded by a decrease over time. The analyses of partial trends in the time series suggested a sequence of alternately decreasing and increasing trends in annual and monthly precipitation, which are sometimes statistically significant. The trend changing points were identified. |
format |
Article in Journal/Newspaper |
author |
M. I. P. de Lima S. C. P. Carvalho J. L. M. P. de Lima |
author_facet |
M. I. P. de Lima S. C. P. Carvalho J. L. M. P. de Lima |
author_sort |
M. I. P. de Lima |
title |
Investigating annual and monthly trends in precipitation structure: an overview across Portugal |
title_short |
Investigating annual and monthly trends in precipitation structure: an overview across Portugal |
title_full |
Investigating annual and monthly trends in precipitation structure: an overview across Portugal |
title_fullStr |
Investigating annual and monthly trends in precipitation structure: an overview across Portugal |
title_full_unstemmed |
Investigating annual and monthly trends in precipitation structure: an overview across Portugal |
title_sort |
investigating annual and monthly trends in precipitation structure: an overview across portugal |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/nhess-10-2429-2010 https://doaj.org/article/656d02e3be124633b8472e6c18a8cfe4 |
long_lat |
ENVELOPE(-59.828,-59.828,-63.497,-63.497) |
geographic |
Kendall |
geographic_facet |
Kendall |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Natural Hazards and Earth System Sciences, Vol 10, Iss 11, Pp 2429-2440 (2010) |
op_relation |
http://www.nat-hazards-earth-syst-sci.net/10/2429/2010/nhess-10-2429-2010.pdf https://doaj.org/toc/1561-8633 https://doaj.org/toc/1684-9981 doi:10.5194/nhess-10-2429-2010 1561-8633 1684-9981 https://doaj.org/article/656d02e3be124633b8472e6c18a8cfe4 |
op_doi |
https://doi.org/10.5194/nhess-10-2429-2010 |
container_title |
Natural Hazards and Earth System Sciences |
container_volume |
10 |
container_issue |
11 |
container_start_page |
2429 |
op_container_end_page |
2440 |
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1766131973543165952 |