Grantee Research Project Results
Trends in Floods and Low Flows in the U.S.: Impact of Spatial Correlation
EPA Grant Number: U915775Title: Trends in Floods and Low Flows in the U.S.: Impact of Spatial Correlation
Investigators: Douglas, Ellen M.
Institution: Tufts University
EPA Project Officer: Packard, Benjamin H
Project Period: May 1, 2000 through May 1, 2002
Project Amount: $61,750
RFA: STAR Graduate Fellowships (2000) RFA Text | Recipients Lists
Research Category: Environmental Statistics , Academic Fellowships , Fellowship - Environmental
Objective:
The objectives of this study are to: (1) investigate the existence of trends in flood and low flows to assess the potential impact of climate change and to compare with previous studies; and (2) evaluate the effect of spatial correlation of flow records on the interpretation of hypothesis test results by developing a hypothesis test that accounts for the spatial correlation of the data.
Approach:
Trends in flood and low flows in the United States will be evaluated using a regional average Kendall's S trend test at two spatial scales and over two timeframes. Field significance will be assessed using a bootstrap methodology to account for the regional cross-correlation of streamflows.
Expected Results:
The expected results of this research will demonstrate that the cross-correlation of flow records dramatically reduces the effective number of samples available for trend assessment.
Supplemental Keywords:
floods, low flows, trends, spatial correlation, field significance, hydroclimatology., RFA, Air, Scientific Discipline, Ecosystem Protection/Environmental Exposure & Risk, Economic, Social, & Behavioral Science Research Program, Environmental Statistics, Mathematics, Ecological Indicators, Ecosystem Protection, Ecosystem/Assessment/Indicators, exploratory research environmental biology, Ecological Effects - Environmental Exposure & Risk, Atmospheric Sciences, Ecological Effects - Human Health, Hydrology, climate change, Chemical Mixtures - Environmental Exposure & Risk, Ecology and Ecosystems, climate impacts, climate change effects, field significance, trends in floods, low flows, trends, flood trends, spatial correlation, climatic influence, floodsProgress and Final Reports:
The perspectives, information and conclusions conveyed in research project abstracts, progress reports, final reports, journal abstracts and journal publications convey the viewpoints of the principal investigator and may not represent the views and policies of ORD and EPA. Conclusions drawn by the principal investigators have not been reviewed by the Agency.