نتایج جستجو برای: pressure patterns of asian monsoon and sudanese

تعداد نتایج: 24099217  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده جنگلداری و مهندسی چوب و کاغذ 1391

درک الگوی توزیع مکانی ماکروفون خاک بدلیل اثرات آن روی فرآیندهای اکوسیستم بسیار مهم است. لیکن اطلاعات کمی در این خصوص وجود دارد. درمورد تنوع زیستی ارگانیسم ها وجانداران خاکزی که ازاجزای مهم وکلیدی درهرسیستم اکولوژیکی هستند و در بهبود حاصلخیزی خاک و تولیدات زمین وپایداری اکوسیستم ها(ازطریق فرآیندهای بیولوژیک)نقش عمده دارند تحقیقات کمی انجام شده است. این تحقیق جهت بررسی الگوی مکانی پارامترهای تنوع...

2017
Yaoming Ma Weiqiang Ma Lei Zhong Zeyong Hu Maoshan Li Zhikun Zhu Cunbo Han Binbin Wang Xin Liu

The Tibetan Plateau is an important water source in Asia. As the "Third Pole" of the Earth, the Tibetan Plateau has significant dynamic and thermal effects on East Asian climate patterns, the Asian monsoon process and atmospheric circulation in the Northern Hemisphere. However, little systematic knowledge is available regarding the changing climate system of the Tibetan Plateau and the mechanis...

2016
Deniz Eroglu Fiona H McRobie Ibrahim Ozken Thomas Stemler Karl-Heinz Wyrwoll Sebastian F M Breitenbach Norbert Marwan Jürgen Kurths

The East Asian-Indonesian-Australian summer monsoon (EAIASM) links the Earth's hemispheres and provides a heat source that drives global circulation. At seasonal and inter-seasonal timescales, the summer monsoon of one hemisphere is linked via outflows from the winter monsoon of the opposing hemisphere. Long-term phase relationships between the East Asian summer monsoon (EASM) and the Indonesia...

2017
Youichi Kamae Toshi Kawana Megumi Oshiro Hiroaki Ueda

Instrumental and proxy records indicate remarkable global climate variability over the last millennium, influenced by solar irradiance, Earth’s orbital parameters, volcanic eruptions and human activities. Numerical model simulations and proxy data suggest an enhanced Asian summer monsoon during the Medieval Warm Period (MWP) compared to the Little Ice Age (LIA). Using multiple climate model sim...

2016
SARAH D. DITCHEK WILLIAM R. BOOS SUZANA J. CAMARGO MICHAEL K. TIPPETT

Synoptic-scalemonsoon disturbances produce themajority of continental rainfall in themonsoon regions of South Asia and Australia, yet there is little understanding of the conditions that foster development of these low pressure systems. Here a genesis index is used to associate monsoon disturbance genesis in a global domain with monthly mean, climatological environmental variables. This monsoon...

Journal: :ecopersia 2013
dilip gautam suman regmi

this paper presents the analysis of the onset and withdrawal dates and the duration of summer monsoon over nepal for last 63 years (1951-2013). the trend analysis revealed that both the onset and withdrawal of summer monsoon are delayed in recent years. the statistical analysis using cumulative deviation and worsley likelihood tests showed a step jump in mean withdrawal date after the year 1997...

1997
Y. Zhang K. R. Sperber J. S. Boyle M. Dix L. Ferranti A. Kitoh K. M. Lau K. Miyakoda D. Randall L. Takacs R. Wetherald

This study evaluates simulations of the East Asian winter monsoon in eight GCMs that participated in the Atmospheric Model Intercomparison Project (AMIP). In addition to validating the mean state of the winter monsoon, the cold surge and its transient properties, which includes the frequency, intensity, preferred propagation tracks, and the evolution patterns of the surges, are examined. GCM si...

2014
V. Stolbova P. Martin B. Bookhagen N. Marwan J. Kurths

This paper employs a complex network approach to determine the topology and evolution of the network of extreme precipitation that governs the organization of extreme rainfall before, during, and after the Indian Summer Monsoon (ISM) season. We construct networks of extreme rainfall events during the ISM (June–September), post-monsoon (October–December), and pre-monsoon (March–May) periods from...

ژورنال: ژئوفیزیک ایران 2020
Abbas ranjbar saadatabadi, Amir Hussain Meshkatee Faranak Bahrami Gholamali Kamali

To study the Iran precipitation anomaly in September to November of 2016 and its probable connection with ENSO (El Nino-Southern Oscillation). This period with similar cases in the previous 55 years (1964, 1983, and 1995 according to forecasting center of NOAA) was investigated. In all cases, ENSO changed from strong El-Nino to weak La-Nina after a very brief neutral period. In the following, o...

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