نتایج جستجو برای: 500 hpa geopotential heights 500hpa hgt the explanatory variables for mean maximum temperature are vorticity at 500 hpa
تعداد نتایج: 18662522 فیلتر نتایج به سال:
A new advanced microwave humidity sounder FY-3D MWHS2 radiance has been assimilated under the clear-sky conditions by implementing its data assimilation interface. The case of tropical storm Ampil in 2018 is selected to address effectiveness new-built module initialization and forecast typhoons. Apart from experiment assimilating both Global Telecommunications System (GTS) data, an with only GT...
Tropical upper-tropospheric troughs (TUTTs), transient summertime disturbances over the Pacific and Atlantic Oceans, are also observed to frequently occur in the North American monsoon (NAM) region. However, unlike TUTTs over the Pacific and Atlantic, which feature a predominance of precipitation on the eastern flank of the disturbances, TUTTs in the NAM region have been shown to enhance precip...
Abstract The Tibetan Plateau vortex (TPV) is a key system triggering rainfall over the (TP) during boreal summer. TPV genesis mechanisms are complicated and its classification great challenge. This study attempts to elucidate these aspects. By introducing standardized index of 24-h increment equivalent potential temperature $$\Delta_{24h} \theta_{{\text{e}}}$$ <mml:math xmlns:mml="http://www.w3...
in the area of vocabulary teaching and learning although much research has been done, only some of it has led to effective techniques of vocabulary teaching and many language learners still have problem learning vocabulary. the urge behind this study was to investigate three methods of teaching words. the first one was teaching words in context based on a traditional method of teaching that is,...
چکیده توان بالقوه تجاری سلولازها و کاربردهای گوناگون آن ها در بسیاری از صنایع انگیزه ای قوی برای تحقیق در این زمینه طی چند دهه گذشته بوده است. با توجه به کاربردهای فراوان این آنزیم در صنایع غذایی? در این پژوهش تصمیم به جداسازی ریزسازواره های تولید کننده سلولاز از خاک درختان انار، انگور، خرمالو و گردو حیاط دانشکده کشاورزی تربیت مدرس، گرفته شد. در این بین خاک درخت خرمالو به دلیل دارا بودن تعداد ...
Cloud overlapping has been a major issue in climate studies owing to a lack of reliable information available over both oceans and land. This study presents the first near-global retrieval and analysis of single-layer and overlapped cloud vertical structures and their optical properties retrieved by applying a new method to the Moderate Resolution Imaging Spectroradiometer (MODIS) data. Taking ...
An environmental synoptic analysis of tropical transitions in the central and Eastern North Atlantic
A tropical transition (TT) is the process whereby a baroclinic, high-to-moderate vertical wind shear, extratropical or subtropical cyclone transformed into warm-core, low cyclone. Thirty TT events were identified over central and eastern North Atlantic basin during period 1979–2019. The here studied from synoptic storm-centered composite climatology an environmental classification perspective. ...
drought is transient phenomenon , slow , repetitive and integral part of the climate of each region. drought begins with a substantial reduction in precipitation over the long-term average rainfall and over time, reduced soil moisture and surface and ground water resources will continue to decrease. this phenomenon is the most important in bakhtegan basin because of its importance in strategic ...
The main goal of this study is to present a recently developed classification method for weather types based on the vorticity and location synoptic centers relative Adriatic region. basis objective classification, applied region, subjective by Poje. Our algorithm considered daily mean sea-level pressure 500 hPa geopotential height define one out 17 possible types. We identify which type was rel...
Dust weather is common and disastrous at the Tibetan Plateau. This study selected a typical case of dust analyzed its main development mechanism in northeast Plateau, then applied six machine learning methods time series regression model to predict PM10 concentration this area. The results showed that: (1) 24-h pressure change was positive when front intruded on surface; convergence vector wind...
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