نتایج جستجو برای: air temperature at 850 hpa

تعداد نتایج: 4086664  

2013
P. D. Kalabokas

In order to evaluate the observed high rural ozone levels in the eastern Mediterranean area during summertime, vertical profiles of ozone measured in the period 1994–2008 in the framework of the MOZAIC project (Measurement of Ozone and Water Vapor by Airbus in Service Aircraft) over the eastern Mediterranean basin (Cairo, Tel Aviv, Heraklion, Rhodes, Antalya) were analyzed, focusing in the lowe...

Journal: :Environmental and experimental botany 2000
Carter Bahadur Norby

Elevated partial pressures of atmospheric carbon dioxide, similar to numerous causes of plant stress, may alter leaf pigmentation and structure and thus would be expected to alter leaf optical properties. Hypotheses that elevated CO(2) pressure and air temperature would alter leaf optical properties were tested for sugar maple (Acer saccharum) in the middle of its fourth growing season under tr...

2018
Shin-Ya Ogino Peiming Wu Miki Hattori Nobuhiko Endo Hisayuki Kubota Tomoshige Inoue Jun Matsumoto

The thermal energy transfer from the sea surface to the atmosphere associated with a cold surge event was investigated with observations from radiosondes on the research vessel “Hakuho-maru” over the Philippine Sea in December 2012. These observations were analyzed, and the results were compared with those obtained from observations over the East China Sea in the Air Mass Transformation Experim...

Journal: :Frontiers in Earth Science 2021

This study finds an increasing trend in the decay timescale (τ) of western North Pacific (WNP) tropical cyclone (TCs) making landfall on Asian continent from 1966–2018. Statistical analysis individual landfalling TCs shows that τ is significantly positively linked to soil wetness, 850-hPa relative vorticity and 200-hPa divergence, whereas it weakly correlated with 700–500-hPa humidity 850–200-h...

Alimohammadi, Iraj, Biabani, Azam, Dehghani, Ali, Falahati, Mohsen, Jalilian, Hamed, Najafi Majareh, Mohammad, Zokaei, Mojtaba,

Introduction: Determining methods for assessing heat stress in different work environments is one of the major challenges for researchers in this field. The purpose of this study was to validate WBGT index and heat pressure assessment (HPA) by some physiological responses in Iranian South Oil Company. Material and Methods: This descriptive-analytical study was carried out on 154 employees of K...

  Climate control centers in each area are diverse and understanding how they relate to the atmospheric components of the Earth's surface contribute to prediction of climate fluctuations.   In this study, by using Pearson's correlation and multivariate regression in a thirty-year period (1961-2010), the relationship between widespread rainfall anomalies in entire of Iran west with temperature a...

Journal: :جغرافیا و مخاطرات محیطی 0
پیمان محمودی محمود خسروی سید ابوالفضل مسعودیان بهلول علیجانی

introduction although temperatures in 0 and below 0 c° in the cold season of the year and mid latitudes are not necessarily considered an extreme phenomenon, but their long-term durability in a widespread area or their sudden occurrence in the beginning and end of the cold season can make this faetor an extreme extent phenomenon. the extreme phenomena are resulted from interaction between large...

Journal: :Journal of Geoscience and Environment Protection 2023

In order to better understand the formation mechanism of rainstorm in China and promote disaster prevention reduction, based on meteorological data National Meteorological Information Center Japan Agency, this paper draws isobaric surface map 850 hPa 500 hPa, relative humidity precipitation distribution map. study, synoptic methods were used analyze heavy process North from August 23th 24th, 20...

Journal: :Environmental Modelling and Software 2008
Masoud Hessami Philippe Gachon Taha B. M. J. Ouarda André St-Hilaire

Many impact studies require climate change information at a finer resolution than that provided by Global Climate Models (GCMs). In the last 10 years, downscaling techniques, both dynamical (i.e. Regional Climate Model) and statistical methods, have been developed to obtain fine resolution climate change scenarios. In this study, an automated statistical downscaling (ASD) regression-based appro...

1999
C.-P. CHANG YONGSHENG ZHANG TIM LI

The relationship between the interannual variations of the East Asian summer monsoon and that of the tropical SST shows considerable variations. In this study, rainfall in the southeastern coastal area of China (SEC) during 1951–96 is used to composite the tropical SST, 850-hPa wind, and 500-hPa height. The results relative to the May–June rainfall, which represents most of the SEC summer monso...

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