The Extreme Precipitation Trend Analysis and Spatial Variation for 50 Years in the Northern Part of Haihe River Basin

DOI

10.2991/ifeesm-15.2015.300How to use a DOI?

Keywords

extreme precipitation index; sustainability; frequency; intensity; the Northern part of Haihe River Basin;

Abstract

The daily precipitation data, from 1962 to 2012, of 20 relative meteorological stations in the Northern part of Haihe River Basin (NHHRB) were collected and analyzed to test the spatial variation and evolution trend of the extreme precipitation in NHHRB. Eight extreme precipitation indexes were selected and calculated to check the sustainability, frequency and intensity of the extreme precipitation in NHHRB and it is hoped to predict the characteristics or the likely types of precipitation causing disasters in the future. The results proved that: (1) the extreme precipitation happening in the plain area have the higher frequency and are more intensive than in mountainous area, and the extreme precipitation in coast area and the mountainous hinterland is of longer duration, while that in flat area and piedmont area are shorter, relatively; (2) through trend test, the sustainability in the flat area is examined to rise and the frequency and the intensity both have decreasing trend. In converse, in the mountain area and piedmont area, the sustainability of the extreme precipitation will re-duce, the moderate rain and rainstorm will happen less frequently while the heavy rain frequency is to rise, and the intensity strengthens. Therefore, it can be concluded that, due to the climate change, human activities and other factors, the characteristics of the extreme precipitation in NHHRB has changed. In the future, the flat area is more likely to suffer the disaster-causing precipitation with long sustainability, weak intensity and low frequency, and the mountain area will encounter with short-time, strong and frequent rainstorm.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shu yu Zhang
AU  - Yong Zhao
AU  - Zhi lei Yu
AU  - Hai hong Li
AU  - Jia qi Zhai
AU  - Qing ming Wang
PY  - 2015/09
DA  - 2015/09
TI  - The Extreme Precipitation Trend Analysis and Spatial Variation for 50 Years in the Northern Part of Haihe River Basin
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 1627
EP  - 1634
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.300
DO  - 10.2991/ifeesm-15.2015.300
ID  - Zhang2015/09
ER  -