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Article: Role of terrestrial hydrologic memory in modulating ENSO impacts in North America

TitleRole of terrestrial hydrologic memory in modulating ENSO impacts in North America
Authors
Issue Date2002
PublisherAmerican Meteorological Society. The Journal's web site is located at http://ams.allenpress.com
Citation
Journal Of Climate, 2002, v. 15 n. 24, p. 3569-3585 How to Cite?
AbstractRelationships among the terrestrial hydrologic processes over the North American continent associated with the El Niño-Southern Oscillation (ENSO) are investigated using a large-area basin-scale land surface model driven by the European Centre for Medium-Range Weather Forecasts Re-Analyses 15-yr (1979-93) dataset. The modeling approach allows for the study of the relationships of ENSO with several hydrologic variables simultaneously, such as soil water storage, basin runoff, snow-water equivalent, and precipitation. The cross-correlation coefficients between terrestrial variables and the ENSO index are computed. The runoff from the northern part of North America was found to be most often negatively correlated with ENSO, and there are four distinct coherent regions over the continent where the runoff anomalies are positively correlated. The terrestrial systems have a delayed response to the ENSO signal, as compared to the precipitation, and the delay may range from a month to a season or longer. The shorter and longer delays are typically associated with rainfall runoff, and snow accumulation and melt processes, respectively. The soil moisture storage plays a very vital role in delaying the effects of the climate variability on the terrestrial hydrologic processes and in extending the influences of the El Niño or La Niña events on the terrestrial climate.
Persistent Identifierhttp://hdl.handle.net/10722/143466
ISSN
2015 Impact Factor: 4.85
2015 SCImago Journal Rankings: 5.000
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorChen, Jen_HK
dc.contributor.authorKumar, Pen_HK
dc.date.accessioned2011-12-02T03:39:04Z-
dc.date.available2011-12-02T03:39:04Z-
dc.date.issued2002en_HK
dc.identifier.citationJournal Of Climate, 2002, v. 15 n. 24, p. 3569-3585en_HK
dc.identifier.issn0894-8755en_HK
dc.identifier.urihttp://hdl.handle.net/10722/143466-
dc.description.abstractRelationships among the terrestrial hydrologic processes over the North American continent associated with the El Niño-Southern Oscillation (ENSO) are investigated using a large-area basin-scale land surface model driven by the European Centre for Medium-Range Weather Forecasts Re-Analyses 15-yr (1979-93) dataset. The modeling approach allows for the study of the relationships of ENSO with several hydrologic variables simultaneously, such as soil water storage, basin runoff, snow-water equivalent, and precipitation. The cross-correlation coefficients between terrestrial variables and the ENSO index are computed. The runoff from the northern part of North America was found to be most often negatively correlated with ENSO, and there are four distinct coherent regions over the continent where the runoff anomalies are positively correlated. The terrestrial systems have a delayed response to the ENSO signal, as compared to the precipitation, and the delay may range from a month to a season or longer. The shorter and longer delays are typically associated with rainfall runoff, and snow accumulation and melt processes, respectively. The soil moisture storage plays a very vital role in delaying the effects of the climate variability on the terrestrial hydrologic processes and in extending the influences of the El Niño or La Niña events on the terrestrial climate.en_HK
dc.languageeng-
dc.publisherAmerican Meteorological Society. The Journal's web site is located at http://ams.allenpress.comen_HK
dc.relation.ispartofJournal of Climateen_HK
dc.rightsJournal of Climate. Copyright © American Meteorological Society.-
dc.rights© Copyright 2002 American Meteorological Society (AMS).-
dc.titleRole of terrestrial hydrologic memory in modulating ENSO impacts in North Americaen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0894-8755&volume=15&issue=24&spage=3569&epage=3585&date=2002&atitle=Role+of+terrestrial+hydrologic+memory+in+modulating+ENSO+impacts+in+North+America-
dc.identifier.emailChen, J:jichen@hkucc.hku.hken_HK
dc.identifier.authorityChen, J=rp00098en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1175/1520-0442(2003)015<3569:ROTHMI>2.0.CO;2-
dc.identifier.scopuseid_2-s2.0-0037116344en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037116344&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume15en_HK
dc.identifier.issue24en_HK
dc.identifier.spage3569en_HK
dc.identifier.epage3585en_HK
dc.identifier.isiWOS:000179814400003-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridChen, J=16443980300en_HK
dc.identifier.scopusauthoridKumar, P=7403961132en_HK

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