نتایج جستجو برای: 26 indices of daily precipitation of zanjan city during 1961

تعداد نتایج: 21348223  

2008
I. Iturrioz E. Hernández P. Ribera

Synoptic situations producing rainfall at four rawinsonde observatories at eastern Spain are classified as stratiform or convective depending on dynamic and thermodynamic instability indices. Two daily radiosonde and daily-accumulated precipitation data from four observatories in Eastern Spain are used: Madrid-Barajas (MB), Murcia (MU), Palma de Mallorca (PA) and Zaragoza (ZA). We calculated tw...

Journal: :فیزیک زمین و فضا 0
فرحناز تقوی مؤسسه ژئوفیزیک دانشگاه تهران- استادیار

in recent years, interest in climatic extreme events (droughts, floods and heat waves) has been growing not only due to their direct impact on many socio-economic sectors, but also as climate change indicators. in this study, the behavior of extreme events is investigated using extreme climate index software (ecis) package. the trend analysis of extreme indices is applied to daily series of tem...

In this research study the daily and annually trends of precipitation in the central Kavir basin of Iran during 1951- 2007. The pixel data of daily precipitation from APHRODITE’s data base with a spatial resolution of 0.25˚ have been used. The Mann-Kendall (MK) nonparametric test has been used for determining the precipitation trend in this area. The trends have been tested in 3 levels 90...

Journal: :تحقیقات جغرافیایی 0
امیدرضا کفایت مطلق ریحانه سمندر دانشگاه کردستان هادی ظرافتی دانشگاه کردستان محمد دارند دانشگاه کردستان

nowadays, undoubted access to up to date with high spatial resolution and low temporal resolution of meteorological parameters is a one of the necessary needs for meteorological science researches. in order to doing this research have been used the different daily, monthly and yearly iran precipitation from global and regional data base of gpcpøŒ gpccøŒ aphrodit v101 0.25øŒ aphrodit v101 0.5 ùˆ...

Journal: :Atmosphere 2022

The daytime and nighttime precipitation proportions of daily total (especially extreme precipitation) are important indicators that help to understand the process formation, which in turn helps evaluate improve models reanalysis data. In this study, we used Huai River Basin (HRB) as a case explore based on 135 meteorological stations during 1961–2018. total, daytime, showed zonal distributions ...

Journal: :Agriculture 2021

The effects of climate change on agricultural ecosystems are increasing, and droughts affect many regions. Drought has substantial ecological, social, economic consequences for the sustainability land. Many regions northern hemisphere have not experienced a high frequency meteorological in past. For understanding implications grassland, analysis long-term data provides key information relevant ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - پژوهشکده ادبیات 1393

1.0 overview it seems that grammar plays a crucial role in the area of second and foreign language learning and widely has been acknowledged in grammar research. in other words, teaching grammar is an issue which has attracted much attention to itself, and a lot of teachers argue about the existence of grammar in language teaching and learning. this issue will remind us a famous sentence f...

اسدی, حسین, بیات, رضا, عرب خدری, محمود, گرامی لوشابی, زهرا,

Erosion rate has temporal variability and shows a cyclic fluctuation in each year as well as the factors influence it due to the seasonality of climate. This study was done to determine the seasonal variability of rainfall erosivity and suspended sediment and also to found out critical times in term of erosion risk in Kasiliyan watershed. The appropriate indices of monthly rainfall erosivity we...

ترکارانی, فاطمه, سلطانی, صغری, عساکره, حسین,

Climatic extremes are the special status (high or low) of climatic elements. In spite of the unique definition, there are a lot of thresholds which have been illustrated for extremes. For example, Bonneted (2006) has defined the climatic extremes as intensive and abnormal events that include the lowest and highest values in a time series. Becker et al. (2007) have referred to the extremes of cl...

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