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Analysis of South Asian Monsoons within the Context of Increasing Regional Black Carbon Aerosols
Atmospheric and Oceanic Science Letters, Volume 3 Number 4. Mahmood Rashed; Yao Jin-Feng - Science Press, 2010South Asian monsoons were analyzed within the context of increasing emissions of black carbon (BC) aerosols using a global atmospheric general circulation model. The BC aerosols were allowed to increase only over the south Asian domain to analyze the impacts of regional black carbon over the climatological patterns of monsoons. The black carbon significantly absorbed the incoming short wave radiation in the atmosphere, a result that is consistent with previous studies. Pre-monsoon (March-April-May) rainfall showed positive anomalies, particularly for some coastal regions of India. The summer ( ...[article]
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Available online: http://www.iapjournals.ac.cn/aosl/ch/reader/view_abstract.aspx?file_no=AOSL10037
in Atmospheric and Oceanic Science Letters > Volume 3 Number 4 (16 July 2010) . - p.224-231South Asian monsoons were analyzed within the context of increasing emissions of black carbon (BC) aerosols using a global atmospheric general circulation model. The BC aerosols were allowed to increase only over the south Asian domain to analyze the impacts of regional black carbon over the climatological patterns of monsoons. The black carbon significantly absorbed the incoming short wave radiation in the atmosphere, a result that is consistent with previous studies. Pre-monsoon (March-April-May) rainfall showed positive anomalies, particularly for some coastal regions of India. The summer (June-July-August) rainfall anomalies were negative over the northern Himalayas, Myanmar, southern China and most of the regions below 20°N due to the decrease in temperature gradients induced by the absorption of BC aerosols. The vertical wind speed anomalies indicated that these regions experienced less convection, which reduces the precipitation efficiency of the monsoon system in South Asia.
Language(s): English
Format: Digital (Free), Hard copyTags: Aerosols ; Atmosphere ; Climate ; Monsoon ; Acid rain ; Research ; Region II - Asia ; South East Asia
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Possible Impact of the Boreal Spring Antarctic Oscillation on the North American Summer Monsoon
This study examined the relationship between the boreal spring (April-May) Antarctic Oscillation (AAO) and the North American summer monsoon (NASM) (July-September) for the period of 1979-2008. The results show that these two systems are closely related. When the spring AAO was stronger than normal, the NASM tended to be weaker, and there was less rainfall over the monsoon region. The opposite NASM situation corresponded to a weaker spring AAO. Further analysis explored the possible mechanism for the delayed impact of the boreal spring AAO on the NASM. It was found that the tropical Atlantic s ...[article]
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Available online: http://www.iapjournals.ac.cn/aosl/ch/reader/view_abstract.aspx?file_no=AOSL10041
in Atmospheric and Oceanic Science Letters > Volume 3 Number 4 (16 July 2010) . - p.232-236This study examined the relationship between the boreal spring (April-May) Antarctic Oscillation (AAO) and the North American summer monsoon (NASM) (July-September) for the period of 1979-2008. The results show that these two systems are closely related. When the spring AAO was stronger than normal, the NASM tended to be weaker, and there was less rainfall over the monsoon region. The opposite NASM situation corresponded to a weaker spring AAO. Further analysis explored the possible mechanism for the delayed impact of the boreal spring AAO on the NASM. It was found that the tropical Atlantic sea surface temperature (SST) plays an important role in the connection between the two phenomena. The variability of the boreal spring AAO can produce anomalous SSTs over the tropical Atlantic. These SST anomalies can persist from spring to summer and can influence the Bermuda High, affecting water vapor transportation to the monsoon region. Through these processes, the boreal spring AAO exerts a significantly delayed impact on the amount of NASM precipitation. Thus, information about the boreal spring AAO is valuable for the prediction of the NASM.
Language(s): English
Format: Digital (Free), Hard copyTags: North America ; Region IV - North America, Central America and the Caribbean ; Aurora ; Monsoon ; Antarctic Oscillation (AAO)
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Volume 3 Number 4 - 16 July 2010
is an issue of Atmospheric and Oceanic Science Letters. Science Press, 2010[number or issue]
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Available online: http://www.iapjournals.ac.cn/aosl/ch/reader/new_year_article.aspx?year_id=2010&q [...]
Language(s): English
Format: Digital (Free) (ill., charts, maps)Tags: Weather ; Meteorology ; Thunderstorm ; Turbulence ; Atmosphere ; Ozone ; Climate ; Snow ; Monsoon ; Aerosols ; Cloud ; Region II - Asia ; China ; Tibet, China ; Antarctica
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A Forecaster's Overview of the Northwest Pacific
This module provides an introduction to the northwest Pacific for weather forecasters. It touches on major aspects of the geography, oceanography, and climatology. Geography looks at plate tectonics, topography, and human population. Oceanography examines ocean currents, coastal tidal ranges, and sea ice distribution. Climatology briefly discusses jets streams, distribution of synoptic features, storm tracks of tropical and extratropical cyclones, the fronts, and sensible weather associated with the Northeast and Southwest Monsoons.
Available online: https://www.meted.ucar.edu/training_module.php?id=569
Published by: The University Corporation for Atmospheric Research ; 2010
This module provides an introduction to the northwest Pacific for weather forecasters. It touches on major aspects of the geography, oceanography, and climatology. Geography looks at plate tectonics, topography, and human population. Oceanography examines ocean currents, coastal tidal ranges, and sea ice distribution. Climatology briefly discusses jets streams, distribution of synoptic features, storm tracks of tropical and extratropical cyclones, the fronts, and sensible weather associated with the Northeast and Southwest Monsoons.
Disclaimer regarding 3rd party resources: WMO endeavours to ensure, but cannot and does not guarantee the accuracy, accessibility, integrity and timeliness of the information available on its website. WMO may make changes to the content of this website at any time without notice.
The responsibility for opinions expressed in articles, publications, studies and other contributions rests solely with their authors, and their posting on this website does not constitute an endorsement by WMO of the opinion expressed therein.
WMO shall not be liable for any damages incurred as a result of the use of its website. Please do not misuse our website.Language(s): English
Format: Digital (Standard Copyright)Tags: Tropical cyclone ; Marine meteorology ; Climate services ; Lesson/ Tutorial ; Climatology ; Monsoon ; Sea ice ; Extratropical cyclone ; Competencies for Provision of Climate Services ; Marine Weather Forecasters ; China ; Japan ; Yellow Sea
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African monsoon multidisciplinary analyses: abstracts
African Monsoon Multidisciplinary Analyses (AMMA) is an international project to im-prove our knowledge and understanding of the West African monsoon (WAM) and its variability using a multi-scale approach; timescales ranging from daily over inter-annual to decadal and beyond and space scales reaching from local over mesoscale to regional and global.
AMMA is motivated by an interest in fundamental scientific issues and by the societal need for improved prediction of the WAM and its impacts on West African nations. Vulnerability of West African societies to climate variability is likely t ...
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Available online: http://biblio.amma-international.org/index.php?action=fileDownload&resourceId=50 [...]
Marie-Pierre Devic ; Odile Roussot ; Serge Janicot ; Chris Thorncroft
Published by: AMMA International ; 2009African Monsoon Multidisciplinary Analyses (AMMA) is an international project to im-prove our knowledge and understanding of the West African monsoon (WAM) and its variability using a multi-scale approach; timescales ranging from daily over inter-annual to decadal and beyond and space scales reaching from local over mesoscale to regional and global.
AMMA is motivated by an interest in fundamental scientific issues and by the societal need for improved prediction of the WAM and its impacts on West African nations. Vulnerability of West African societies to climate variability is likely to increase in the next decades as demands on resources increase in association with one of the world’s most rapidly growing populations. Vulnerability may be further increased in association with the effects of climate change and other factors linked to the fast growing population.
Since 2002, AMMA has been promoting international coordination of ongoing activities, basic research and a multi-year field campaign over West Africa and the tropical Atlantic. AMMA has been developing close partnerships between those involved in basic research of the WAM, operational forecasting and decision making, and has been establishing blended training and education activities for African technical institutions and schools.
This 3rd AMMA International conference will bring together researchers from around the world working on WAM processes, predictability and climate change issues as well as on society-environment-climate interactions, to review ongoing research activities and to discuss future contributions and directions within the AMMA programme. It also provides an ideal opportunity to broadcast the new knowledge towards a larger community.Language(s): English
Format: Digital (Free), Hard copyTags: Observations ; Monsoon ; Region I - Africa
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WCDMP, 74. Regional Workshop on Climate Monitoring and Analysis of Climate Variability; followed by: implementation of Climate Watch System in RA II with focus on Monsoon affected areas
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N°45 (Vol. 13, No. 2) - April 2008 - North American Monsoon Experiment: NAME
is an issue of Exchanges. International CLIVAR Project Office, 2008Permalink![]()
Introduction to Climatology
This module provides an overview of climatology, the study of climate. The module begins by examining the drivers that combine to create the climate regions of the world—from those at the mesoscale (local) level to those at the synoptic-scale (continental) and global-scale levels. Examples include locally dominant winds, air masses, fronts, ocean currents, Earth’s rotation around the sun, and latitude. Each discussion of a climate driver has an ‘example/exploration’ segment, where the information is applied to several cities. The module also examines a scheme for classifying the world’s climat ...Permalink![]()
N°32 - Novembre 2006 - A la poursuite de la mousson africaine: ANMA
is an issue of Atmosphériques. Météo France, 2006Permalink![]()
Improved seasonal climate forecasts of the South Asian summer monsoon using a suite of 13 coupled ocean-atmosphere models
Several modeling studies have shown that the south Asian monsoon region has the lowest skill for seasonal forecasts compared with many other domains of the world. This paper demonstrates that a multimodel synthetic superensemble approach, when constructed with any set of coupled atmosphere-ocean models, can provide improved skill in seasonal climate prediction compared with single-member models or their ensemble mean for the south Asian summer monsoon region. However, performance of the superensemble tends to improve when a better set of input member models are used. As many as 13 state-of-the ...PermalinkPermalink![]()
Vol. 79, No.1B - March 2001 - Special issue: GEWEX Asian Monsoon Experiment (GAME)
is an issue of Journal of the Meteorological Society of Japan. Meteorological Society of Japan, 2001Permalink![]()
Address at the opening of the International Workshop on West African Monsoon Variability and Predictability (WAMAP)
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Tropical Meteorology Research Programme (TMRP) Report, 61. Proceedings of the sixth Regional Workshop on Asian/African monsoon enphasizing training aspects
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Address at the opening of the International workshop on West African moonsoon variability and predictability (WAMAP)
Obasi G.O.P - WMO, 1999Permalink