The Impacts of Global Scale Climate Variations on Southwest Asia
We have examined the impacts of global scale intraseasonal and interannual climate variations on Southwest Asia (SWA). The variations of primary interest are El Nino-La Nina (ENLN) the Indian Ocean Zonal Mode (IOZM) the Madden-Julian Oscillation (MJO) and the North Atlantic Oscillation (NAO). The im...
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ftdtic:ADA445302 2023-05-15T17:31:23+02:00 The Impacts of Global Scale Climate Variations on Southwest Asia Vorhees, Damon C. NAVAL POSTGRADUATE SCHOOL MONTEREY CA 2006-03 text/html http://www.dtic.mil/docs/citations/ADA445302 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA445302 en eng http://www.dtic.mil/docs/citations/ADA445302 Approved for public release; distribution is unlimited. DTIC Meteorology *TEMPERATURE *PRECIPITATION *CLIMATOLOGY *SOUTHWEST ASIA DATA BASES GLOBAL IMPACT THESES TROPICAL REGIONS OSCILLATION SUBTROPICAL REGIONS INDIAN OCEAN NORTH ATLANTIC OCEAN CIRCULATION MOISTURE PACIFIC OCEAN CONVERGENCE REGIONS PREDICTIONS ENVIRONMENTS ANOMALIES EL NINO LA NINA NCEP(NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION) Text 2006 ftdtic 2016-02-22T02:12:01Z We have examined the impacts of global scale intraseasonal and interannual climate variations on Southwest Asia (SWA). The variations of primary interest are El Nino-La Nina (ENLN) the Indian Ocean Zonal Mode (IOZM) the Madden-Julian Oscillation (MJO) and the North Atlantic Oscillation (NAO). The impacts of primary interest are on fall-winter precipitation and temperature in SWA and associated lower and upper level circulation anomalies in the eastern hemisphere. Our primary data sets are National Centers for Environmental Prediction (NCEP) reanalysis fields and indices of ENLN IOZM MJO and NAO activity. We have identified several upper and lower level circulation anomaly patterns that are directly linked to both the primary climate variations and to anomalous precipitation and temperature in SWA. The circulation anomalies associated with these SWA anomalies are similar for ENLN IOZM MJO and NAO periods. For the tropical climate variations1 the mechanisms for these circulation anomalies involve equatorial Rossby-Kelvin wave dynamics and related alterations of the southwesterly and northeasterly monsoon flows tropical easterly jet and subtropical jet in northeast Africa and SWA and the tropical Africa - Indian Ocean - western tropical Pacific region. Much of the impact on precipitation occurs through: (1) anomalous moisture advection over the tropical northwest Indian Ocean and tropical and subtropical North Africa; and (2) anomalous moisture convergence over SWA. The original document contains color images. Text North Atlantic North Atlantic oscillation Defense Technical Information Center: DTIC Technical Reports database Indian Pacific |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Meteorology *TEMPERATURE *PRECIPITATION *CLIMATOLOGY *SOUTHWEST ASIA DATA BASES GLOBAL IMPACT THESES TROPICAL REGIONS OSCILLATION SUBTROPICAL REGIONS INDIAN OCEAN NORTH ATLANTIC OCEAN CIRCULATION MOISTURE PACIFIC OCEAN CONVERGENCE REGIONS PREDICTIONS ENVIRONMENTS ANOMALIES EL NINO LA NINA NCEP(NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION) |
spellingShingle |
Meteorology *TEMPERATURE *PRECIPITATION *CLIMATOLOGY *SOUTHWEST ASIA DATA BASES GLOBAL IMPACT THESES TROPICAL REGIONS OSCILLATION SUBTROPICAL REGIONS INDIAN OCEAN NORTH ATLANTIC OCEAN CIRCULATION MOISTURE PACIFIC OCEAN CONVERGENCE REGIONS PREDICTIONS ENVIRONMENTS ANOMALIES EL NINO LA NINA NCEP(NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION) Vorhees, Damon C. The Impacts of Global Scale Climate Variations on Southwest Asia |
topic_facet |
Meteorology *TEMPERATURE *PRECIPITATION *CLIMATOLOGY *SOUTHWEST ASIA DATA BASES GLOBAL IMPACT THESES TROPICAL REGIONS OSCILLATION SUBTROPICAL REGIONS INDIAN OCEAN NORTH ATLANTIC OCEAN CIRCULATION MOISTURE PACIFIC OCEAN CONVERGENCE REGIONS PREDICTIONS ENVIRONMENTS ANOMALIES EL NINO LA NINA NCEP(NATIONAL CENTERS FOR ENVIRONMENTAL PREDICTION) |
description |
We have examined the impacts of global scale intraseasonal and interannual climate variations on Southwest Asia (SWA). The variations of primary interest are El Nino-La Nina (ENLN) the Indian Ocean Zonal Mode (IOZM) the Madden-Julian Oscillation (MJO) and the North Atlantic Oscillation (NAO). The impacts of primary interest are on fall-winter precipitation and temperature in SWA and associated lower and upper level circulation anomalies in the eastern hemisphere. Our primary data sets are National Centers for Environmental Prediction (NCEP) reanalysis fields and indices of ENLN IOZM MJO and NAO activity. We have identified several upper and lower level circulation anomaly patterns that are directly linked to both the primary climate variations and to anomalous precipitation and temperature in SWA. The circulation anomalies associated with these SWA anomalies are similar for ENLN IOZM MJO and NAO periods. For the tropical climate variations1 the mechanisms for these circulation anomalies involve equatorial Rossby-Kelvin wave dynamics and related alterations of the southwesterly and northeasterly monsoon flows tropical easterly jet and subtropical jet in northeast Africa and SWA and the tropical Africa - Indian Ocean - western tropical Pacific region. Much of the impact on precipitation occurs through: (1) anomalous moisture advection over the tropical northwest Indian Ocean and tropical and subtropical North Africa; and (2) anomalous moisture convergence over SWA. The original document contains color images. |
author2 |
NAVAL POSTGRADUATE SCHOOL MONTEREY CA |
format |
Text |
author |
Vorhees, Damon C. |
author_facet |
Vorhees, Damon C. |
author_sort |
Vorhees, Damon C. |
title |
The Impacts of Global Scale Climate Variations on Southwest Asia |
title_short |
The Impacts of Global Scale Climate Variations on Southwest Asia |
title_full |
The Impacts of Global Scale Climate Variations on Southwest Asia |
title_fullStr |
The Impacts of Global Scale Climate Variations on Southwest Asia |
title_full_unstemmed |
The Impacts of Global Scale Climate Variations on Southwest Asia |
title_sort |
impacts of global scale climate variations on southwest asia |
publishDate |
2006 |
url |
http://www.dtic.mil/docs/citations/ADA445302 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA445302 |
geographic |
Indian Pacific |
geographic_facet |
Indian Pacific |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
DTIC |
op_relation |
http://www.dtic.mil/docs/citations/ADA445302 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766128902988627968 |