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oai:www.ideals.illinois.edu:2142/78290 2023-07-11 col_2142_5131 col_2142_14770 com_2142_5130 com_2142_3518 com_2142_234

Kumar, Praveen Kumar, Praveen Kaur, Harpreet 2015-07-22T22:15:32Z 2015-07-22T22:15:32Z 2015-05 2015-01-14 The intensification of hydrological cycle and its nature is an important question in hydrology. The human activities are a major cause of change in hydrological cycle. The fluctuations in hydrological cycle can influence the dynamics of ecosystem. The changes in global water cycle and the corresponding redistribution of precipitation is a threat to food availability, stability, access and utilization. The droughts as well as floods have increased in number and scale. The effect of climate change can be seen by understanding the changes in trends of evaporation, precipitation, temperature and increase in level of water as well as salinity in seas as well as oceans. There has been extensive climate change in North America. The major impacts of climate change in North America are sea level rise, wildfire and insect outbreaks, increased risk of deaths due to heat waves and degraded water quality, diminishing snowfields and increase in precipitation. There is increase in intensity as well as frequency of precipitation in North America. Studies have been focused on extreme precipitation and extreme dry days as well as timing of precipitation. In this study the focus is on change in precipitation probability and persistence of wet days and dry spells over contiguous US and south Canada. There is a paucity of empirical evidence for this study. We are studying the pattern of rain and no-rain statistics analyzed over decadal time scale to identify any statistically significant temporal patterns of change using observed data. The year is divided into four seasons and all the comparisons are made seasonal as well as yearly. The day with a precipitation greater than 0.1 mm is considered as a rainy day. Here we show that precipitation probability and persistence of wet days has generally increased throughout the study area with the exception of a few stations. This study also presents the variation of magnitude of precipitation as well as its seasonal distribution in Minnesota River Basin. The motivation for the study is the sediment increment in Minnesota River. We anticipate that the northwestern and north eastern US have undergone a major change. The amount of precipitation received by these areas is already high; this means wet days are getting wetter. Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2015-07-22 without embargo terms The student, Harpreet Kaur, accepted the attached license on 2015-01-08 at 16:31. The student, Harpreet Kaur, submitted this Thesis for approval on 2015-01-08 at 16:42. This Thesis was approved for publication on 2015-01-14 at 09:19. DSpace SAF Submission Ingestion Package generated from Vireo submission #7672 on 2015-07-22 at 10:29:32 Made available in DSpace on 2015-07-22T22:15:32Z (GMT). No. of bitstreams: 2 kaur_harpreet1.pdf: 18786491 bytes, checksum: ca750eba99ce0d0b31ab0c546d5df566 (MD5) license.txt: 4063 bytes, checksum: 819d96e86b5fe12c74351cd94df97807 (MD5) Previous issue date: 2015-01-14 application/pdf http://hdl.handle.net/2142/78290 Copyright 2015 Harpreet Kaur precipitation probability Intensification of hydrological cycle Spatial and temporal variation in precipitation pattern text text 2015-5 Civil & Environmental Eng Environ Engr in Civil Engr University of Illinois at Urbana-Champaign Thesis M.S.