Correlation and Spatial Analysis of IRAN winter precipitation through outgoing long wave Radiation
Precipitation is one of the most important and variable climatic elements that changes in time and place. Critical rainfall at various time scales, especially daily, causes severe damage to human communities in densely populated urban areas and natural ecosystems and affects many arid economies. Earth outgoing long-wave radiation is studied as a significant parameter to detect clouds and estimate this type of precipitation. The current study aims to examine the relationship and analysis of outgoing long-wave radiation variables and precipitation values in Arc GIS software environment for the four cold months 17 statistical years in Iran using AIRS sensor products of Aqua satellite and GPM satellite. Correlation and regression models and confidence interval estimation were used to measure the correlation of long-wave radiation output in predicting precipitation patterns and their changes. According to the results obtained in all months studied, In the whole country, except Caspian Sea basin in January, parts of the central and eastern plateau of eastern Iran, there is a negative correlation of 10 to 92%, Which indicates that the country's atmosphere is humid and prevents the release of outgoing long-wave radiation. In the western rainfall areas of the Zagros Mountains, negative correlations above 70% and outgoing long-wave radiation is less than 260 W⋅m−2 which is due to cloudy and humid atmosphere with precipitation.In December and February, the rainfall areas north of the Caspian Sea basin range have negative correlations of above 50% and OLR less than 235 W⋅m−2 of rainfall and the reason for the lower numerical value north of the Alborz mountain range to predict is the existence of high relative humidity in the region, which is the cause of less outgoing long-wave radiation output of the earth.
-
Climatology of Iran's Albedo using MODIS Data
Omid Reza Kefayat Motlagh, *
Journal of the Earth and Space Physics, -
The effect of mid-latitude atmospheric circulation changes on the position of the Mediterranean trough and the occurrence of super heavy precipitation in Iran
Nabi Mirzaei *, Bohloul Alijani, Zahra Hejazizadeh, , Mohammadhosein Nasserzadeh
Journal of the Earth and Space Physics, -
Projecting precipitation in Northwest Iran based on CMIP6
Elnaz Ostadi *, Saeed Jahaanbakhsh, Majid Rezaeibanafsheh, Ali Mohammad Khorshiddoust,
Journal of Climate Research, -
Projection of Precipitation using CMIP6 Models Until the End of the 21st Century in the Northwest of Iran
Behrooz Sari Sarraf, , Nabi Mohamadi *
Journal of Geography and Environmental Hazards,