Analysis of Climatic States and Atmospheric Circulation Patterns That Influence Québec Spring StreamflowsSource: Journal of Hydrologic Engineering:;2008:;Volume ( 013 ):;issue: 006Author:Oli G. B. Sveinsson
,
Upmanu Lall
,
Jocelyn Gaudet
,
Yochanan Kushnir
,
Steve Zebiak
,
Vincent Fortin
DOI: 10.1061/(ASCE)1084-0699(2008)13:6(411)Publisher: American Society of Civil Engineers
Abstract: Results from diagnostic analyses to understand the seasonal evolution of the large-scale climatic state responsible for the development and melt of the winter snowpack, and spring–early summer precipitation in the Churchill Falls region on the Québec-Labrador Peninsula, Canada, are presented in the context of the development of an empirical model for seasonal to annual streamflow forecasting, with a special emphasis on the May–July spring freshet. Teleconnection indices and gridded global measures of atmospheric circulation inferred from the National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis are used as climatic indicators. Composite and correlation analyses are applied to the climatic indicators conditioned on the spring streamflow for identification of potential predictors. Meridional and zonal atmospheric fluxes over the Atlantic and the Pacific Oceans emanating from regionally persistent sea surface temperature/sea level pressure modes are identified as potential carriers of information. We speculate on the ocean-atmosphere and regional hydrologic mechanisms that may be involved in lending multiseasonal predictability to streamflows in the region.
|
Collections
Show full item record
contributor author | Oli G. B. Sveinsson | |
contributor author | Upmanu Lall | |
contributor author | Jocelyn Gaudet | |
contributor author | Yochanan Kushnir | |
contributor author | Steve Zebiak | |
contributor author | Vincent Fortin | |
date accessioned | 2017-05-08T21:24:21Z | |
date available | 2017-05-08T21:24:21Z | |
date copyright | June 2008 | |
date issued | 2008 | |
identifier other | %28asce%291084-0699%282008%2913%3A6%28411%29.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/50199 | |
description abstract | Results from diagnostic analyses to understand the seasonal evolution of the large-scale climatic state responsible for the development and melt of the winter snowpack, and spring–early summer precipitation in the Churchill Falls region on the Québec-Labrador Peninsula, Canada, are presented in the context of the development of an empirical model for seasonal to annual streamflow forecasting, with a special emphasis on the May–July spring freshet. Teleconnection indices and gridded global measures of atmospheric circulation inferred from the National Centers for Environmental Prediction/National Center for Atmospheric Research reanalysis are used as climatic indicators. Composite and correlation analyses are applied to the climatic indicators conditioned on the spring streamflow for identification of potential predictors. Meridional and zonal atmospheric fluxes over the Atlantic and the Pacific Oceans emanating from regionally persistent sea surface temperature/sea level pressure modes are identified as potential carriers of information. We speculate on the ocean-atmosphere and regional hydrologic mechanisms that may be involved in lending multiseasonal predictability to streamflows in the region. | |
publisher | American Society of Civil Engineers | |
title | Analysis of Climatic States and Atmospheric Circulation Patterns That Influence Québec Spring Streamflows | |
type | Journal Paper | |
journal volume | 13 | |
journal issue | 6 | |
journal title | Journal of Hydrologic Engineering | |
identifier doi | 10.1061/(ASCE)1084-0699(2008)13:6(411) | |
tree | Journal of Hydrologic Engineering:;2008:;Volume ( 013 ):;issue: 006 | |
contenttype | Fulltext |