Open AccessSynoptic Analysis for the Daily Rains of the City of Baghdad
Author(s) -
Donia Qassim Hmood,
Asraa K. Abdul kareem
Publication year - 2021
Publication title -
maǧallaẗ ʻulūm al-mustanṣiriyyaẗ/mustansiriyah journal of science
Language(s) - English
Resource type - Journals
eISSN - 2521-3520
pISSN - 1814-635X
DOI - 10.23851/mjs.v32i2.983
Subject(s) - relative humidity , environmental science , wet season , jet stream , structural basin , dryness , climatology , front (military) , atmospheric sciences , meteorology , synoptic scale meteorology , hydrology (agriculture) , jet (fluid) , geography , geology , medicine , paleontology , physics , cartography , thermodynamics , geotechnical engineering , surgery
To know the reasons for changing the daily rainfall amount, cases study were chosen for Baghdad station by specifying the maximum and minimum daily rain for the months of the rainy season for each year of the study period (2007-2018). The behavior of daily rainfall for the rainy season varying temporally with maximum (89 mm) and minimum (0.1mm). Synoptic analysis of weather chart for pressure levels (300, 500, 700, 850, and surface) was performed. Visible images of satellites were used to determine the quantities of the cloud for the selected cases. The results showed that synoptic analysis in all cases occurs due to the presence of a jet stream in the upper atmosphere, accompanied by the presence of a basin at the level of 300 hectopascals with an enhancement of relative humidity exceeding 70% at the level of 700 hectopascals, but the presence of the front makes the amount of rain greater in the absence of it. At the level of 850 hectopascals and the surface, the depressions that affect Iraq also differ in their severity and the amount of moisture loaded.