Dynamical Analysis of Severe Rain Events over Iraq

Abstract

Abstract
 Rain is one of the most important meteorological elements for the various forms of life. Over time, because of the changes in the Earth's climate, patterns of precipitation have changed. Many areas have suffered from lack of water resources. Others have become completely dry and turned into arid deserts. For these reasons, increased interest in climate studies, especially those related to rainfall. In this study, the statistical indicators was showed for the mean annual rainfall is about 225.84 mm and rainfall fluctuates around this mean, and the trend of rainfall was decreasing for period (1983-2017). The mean of monthly rainfall indicate that the highest amount is less than40 mm/month. The histograms of monthly rain shows the highest counts of(40-50) mm, (30-40) mm, (20-30) mm, ( 10-20)mm, (0-10)mm intervals for same period. By using TRMM daily rainfall maps to study the dynamical analysis of severe rainfall cases was conducted in Iraq for four individual study cases. The highest values are ranged between (80- 160) mm. Eleven meteorological elements were selected to study their behavior in the process of severe rainfall in these study cases as the (1000-500) mb thickness, mean sea level pressure, the 850 hPa (relative humidity, temperature and streamlines), the 500 hPa (vorticity and geopotential height), the 200 hPa (streamlines and isotaches), the Convective Available Potential Energy (CAPE) and the Total Cloud Water Vapor (TCWV) founding some of the results that were illustrated in this paper.

The Relationship of CLWC and Rainfall to the Synoptic Cases of Two Case Studies Over Iraq

“…Highlands in the north and northeast, alluvial plains in the southeast and center regions, desert in the west and southwest, and northwest to the southeast the fertile sedimentary plains [17]. Iraq is located northeast of the red sea and east of the Mediterranean Sea [10]. The majority of Iraq's sources of moisture for precipitation activities come from the two seas.…”

“…Knowing the amount of rainfall is essential and useful in many industries, including agriculture, raising the water level, and storing dams. Rainfall totals vary from location to place and from year to year based on several factors [10]. The importance of cloud liquid water content has led to a variety of studies on this topic, such: In 2009 Forbes and eta first evaluation of the ECMWF IFS model with observations from CloudSat Radar and Calypso lidar.…”

Study of Sky Radio Frequency Interference Background Level Behavior During the Partial Solar Eclips on 25 Oct. 2022 at The Baghdad University Location

“…When the eclipsed shadow crosses the propagation channels, there is a noticeable decrease in signal strength, as measured by monitoring radio signals given by different radio stations at different frequencies and received at a specific observation point. It is an acronym for a specific range of electromagnetic energy frequencies used to transmit data [6]. The important applications of this spectrum in various fields, including radio and television broadcasting, civil aviation, defense, emergency services and satellites, depend on specific assignments of radio frequencies at eclipsing the radio radiation of the spectrum, the radio flux (density) from the sun photosphere layer is no longer dominant.…”

Evaluation of Geopotential Height at 500 hpa with Rainfall Events: A Case Study of Iraq

“…Jafaar.I and Kadhum. H 2019 [14] studied the dynamic of extreme rainfall events across Iraq, they showed that the disturbance at 500hpa geopotential height was a crucial factor in the stormy weather over Iraq. A.M. Al-Lami et al 2021 [15] studied the Spatiotemporal analysis of extreme rainfall indices in Iraq from 1981 to 2017, the result showed that the highest rainfall total indices were found in the northwestern region, while the lowest were found in the western and southern regions.…”