نتایج جستجو برای: middle left 700 hpa

تعداد نتایج: 464655  

2013
Benfu Zhao Jianhua Xu Zhongsheng Chen Ling Bai Peng Li

The temperature data from 3 meteorological stations (Kashi, Ruoqiang, and Hotan) in the South of Tarim River Basin (STRB) during 1964-2011 were analyzed by Mann-Kendall test and correlation analysis. The results from Mann-Kendall test show that the surface temperature (ST), 850 hPa temperature (T850), and 700 hPa temperature (T700) exhibited upward trends, while 300 hPa temperature (T300) revea...

Journal: :Atmospheric Chemistry and Physics 2022

Abstract. Despite decades of effort, the drivers global long-term trends in tropospheric ozone are not well understood, impacting estimates radiative forcing and budget. We analyze since 1980 using ozonesondes remote surface measurements around globe investigate ability two atmospheric chemical transport models, GEOS-Chem MERRA2-GMI, to reproduce these trends. Global measured at 25 ozonesonde s...

Journal: :پژوهش های جغرافیای طبیعی 0
غلامعباس فلاح قالهری جواد خوشحال

the aim of this research is investigating the relations between climatic large scale signals and spring rainfall of khorasan-e razavi province. in this research, we have analyzed 38 years of rainfall data in khorasan-e razavi province, located in northeastern iran. we attempted to train artificial neural network based upon climatic large scale signals with 38 years of rainfall data. for perform...

Journal: :Meteorology 2022

During the early summer rainy season over Taiwan, three types of low-level jets are observed, including a synoptic jet (SLLJ) situated in 850–700 hPa layer frontal zone, marine boundary (MBLJ) embedded within southwesterly monsoon flow northern South China Sea at approximately 925 level, and an orographically induced 1 km level off northwestern Taiwan coast (e.g., barrier (BJ)). The characteris...

Journal: :تحقیقات جغرافیایی 0
سعید موحدی رضا کاوسی

abstractâ iran country due to laying in the desert belt on the northern hemisphere, are dry and desert climate of many parts of it predominate. due to the same location in the atmospheric loss of human life and animal life and it has an important role. and according to the moisture sources in the country and located outside of the atmospheric loss from year to year fluctuations have other roles...

Journal: :تحقیقات جغرافیایی 0
فخری سادات فاطمی نیا دانشکده علوم جغرافیایی دانشگاه اصفهان هوشمند عطائی دانشگاه پیام نور اصفهان

abstractâ in this study, for spatial-temporal analyzing of cyclones in 1376, the spatial range of 30 to 80 degrees of east longitude and 0 to 80 degrees of north latitude and geo potential data with 2/ 5* 2 / 5 degrees of networking in arc levels of 1000, 925, 850, 700, 600 and 500 hpa have been used. these data are extracted for six hours (00, 06, 12, 18 zulu) database (ncep / ncar). so that, ...

Journal: :فیزیک زمین و فضا 0
زهرا شرعی پور کارشناس هواشناسی، گروه فیزیک فضا، مؤسسه ژئوفیزیک، دانشگاه تهران

in this paper, the correlation between total ozone and upper air meteorological parameters such as heights of geopotential surfaces and temperatures for three stations of tehran, ankara and bet dagan located in the middle east, in cold period (jan, feb and march) of years of 2005, 2007 and 2008 has been investigated. data for upper air is taken from wyoming university and ozone data is from sat...

In this research, applied synoptic model for determining the average daily temperature and its relationship with the Geopotential Height in middle level (500 HPa). Therefore, two database were used: database of atmospheric circulations, includes the data of geopotential height at 500 HPa and its data were extracted from the NCEP/DOE(US National Oceanic and Atmospheric Administration) in hours 0...

2012
Arjun Kumar Stefan Liess Jaya Kawale Dominick Ormsby

A possibly new teleconnection has been discovered off the east coast of Australia in the region around Tasman sea and Southern Ocean. Found in pressure anomalies using a novel graph based approach called shared reciprocal nearest neighbors, this dipole appears in reanalysis datasets such as NCEP, JRA, ERA and MERRA. The HadSLP2 observation data shows the new dipole, despite of limited observati...

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Dust storms are one of damaging climatic phenomena on the synoptic maps that are affected from the elements of pressure, cloudiness, precipitation, relative humidity, wind, temperature, and evaporation. According to Kermanshah province is one of the areas that is affected by the storms, the aim of this study is synoptic analysis of extreme dust storms in Kermanshah Station in 54-year period (19...

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