Century-long variability and trends in daily precipitation characteristics at three Finnish stations
Long-term variations and trends in a wide range of statistics for daily precipitation characteristics in terms of intensity, frequency and duration in Finland were analysed using precipitation records during 1908–2008 from 3 meteorological stations in the south (Kaisaniemi), centre (Kajaani) and nor...
Main Authors: | , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
KeAi Communications Co., Ltd.
2016-03-01
|
Series: | Advances in Climate Change Research |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S1674927816300132 |
id |
doaj-4fd548dc4157418283fded60edf657cf |
---|---|
record_format |
Article |
spelling |
doaj-4fd548dc4157418283fded60edf657cf2021-04-02T10:48:49ZengKeAi Communications Co., Ltd.Advances in Climate Change Research1674-92782016-03-0171546910.1016/j.accre.2016.04.004Century-long variability and trends in daily precipitation characteristics at three Finnish stationsMasoud Irannezhad0Hannu Marttila1Deliang Chen2Bjørn Kløve3Water Resources and Environmental Engineering Research Group, Faculty of Technology, University of Oulu, Oulu 90014, FinlandWater Resources and Environmental Engineering Research Group, Faculty of Technology, University of Oulu, Oulu 90014, FinlandDepartment of Earth Sciences, University of Gothenburg, Gothenburg 40530, SwedenWater Resources and Environmental Engineering Research Group, Faculty of Technology, University of Oulu, Oulu 90014, FinlandLong-term variations and trends in a wide range of statistics for daily precipitation characteristics in terms of intensity, frequency and duration in Finland were analysed using precipitation records during 1908–2008 from 3 meteorological stations in the south (Kaisaniemi), centre (Kajaani) and north (Sodankylä). Although precipitation days in northern part were more frequent than in central and southern parts, daily precipitation intensity in the south was generally higher than those in the centre and north of the country. Annual sum of very light precipitation (0 mm < daily precipitation ≤ long-term 50th percentile of daily precipitation more than 0 mm) significantly (p < 0.05) decreased over time, with the highest rate in northern Finland. These decreasing trends might be the result of significant increases in frequency of days with very light precipitation at all the stations, with the highest and lowest rates in northern and southern Finland, respectively. Ratio of annual total precipitation to number of precipitation days also declined in Finland over 1908–2008, with a decreasing north to south gradient. However, annual duration indices of daily precipitation revealed no statistically significant trends at any station. Daily precipitation characteristics showed significant relationships with various well-known atmospheric circulation patterns (ACPs). In particular, the East Atlantic/West Russia (EA/WR) pattern in summer was the most influential ACP negatively associated with different daily precipitation intensity, frequency and duration indices at all three stations studied.http://www.sciencedirect.com/science/article/pii/S1674927816300132Daily precipitation characteristicsTrend analysisIntensityFrequencyDurationExtremesAtmospheric circulation patternsFinland |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Masoud Irannezhad Hannu Marttila Deliang Chen Bjørn Kløve |
spellingShingle |
Masoud Irannezhad Hannu Marttila Deliang Chen Bjørn Kløve Century-long variability and trends in daily precipitation characteristics at three Finnish stations Advances in Climate Change Research Daily precipitation characteristics Trend analysis Intensity Frequency Duration Extremes Atmospheric circulation patterns Finland |
author_facet |
Masoud Irannezhad Hannu Marttila Deliang Chen Bjørn Kløve |
author_sort |
Masoud Irannezhad |
title |
Century-long variability and trends in daily precipitation characteristics at three Finnish stations |
title_short |
Century-long variability and trends in daily precipitation characteristics at three Finnish stations |
title_full |
Century-long variability and trends in daily precipitation characteristics at three Finnish stations |
title_fullStr |
Century-long variability and trends in daily precipitation characteristics at three Finnish stations |
title_full_unstemmed |
Century-long variability and trends in daily precipitation characteristics at three Finnish stations |
title_sort |
century-long variability and trends in daily precipitation characteristics at three finnish stations |
publisher |
KeAi Communications Co., Ltd. |
series |
Advances in Climate Change Research |
issn |
1674-9278 |
publishDate |
2016-03-01 |
description |
Long-term variations and trends in a wide range of statistics for daily precipitation characteristics in terms of intensity, frequency and duration in Finland were analysed using precipitation records during 1908–2008 from 3 meteorological stations in the south (Kaisaniemi), centre (Kajaani) and north (Sodankylä). Although precipitation days in northern part were more frequent than in central and southern parts, daily precipitation intensity in the south was generally higher than those in the centre and north of the country. Annual sum of very light precipitation (0 mm < daily precipitation ≤ long-term 50th percentile of daily precipitation more than 0 mm) significantly (p < 0.05) decreased over time, with the highest rate in northern Finland. These decreasing trends might be the result of significant increases in frequency of days with very light precipitation at all the stations, with the highest and lowest rates in northern and southern Finland, respectively. Ratio of annual total precipitation to number of precipitation days also declined in Finland over 1908–2008, with a decreasing north to south gradient. However, annual duration indices of daily precipitation revealed no statistically significant trends at any station. Daily precipitation characteristics showed significant relationships with various well-known atmospheric circulation patterns (ACPs). In particular, the East Atlantic/West Russia (EA/WR) pattern in summer was the most influential ACP negatively associated with different daily precipitation intensity, frequency and duration indices at all three stations studied. |
topic |
Daily precipitation characteristics Trend analysis Intensity Frequency Duration Extremes Atmospheric circulation patterns Finland |
url |
http://www.sciencedirect.com/science/article/pii/S1674927816300132 |
work_keys_str_mv |
AT masoudirannezhad centurylongvariabilityandtrendsindailyprecipitationcharacteristicsatthreefinnishstations AT hannumarttila centurylongvariabilityandtrendsindailyprecipitationcharacteristicsatthreefinnishstations AT deliangchen centurylongvariabilityandtrendsindailyprecipitationcharacteristicsatthreefinnishstations AT bjørnkløve centurylongvariabilityandtrendsindailyprecipitationcharacteristicsatthreefinnishstations |
_version_ |
1724166774877847552 |