Abstract A cloud is a collection of water droplets or ice crystals, both them suspended in the air. The aim this work to study spatiotemporal variations properties over six selected cities Iraq which they are (Mosul, Khanaqin, Baghdad, Rutba, Kut, and Basra) at multi-pressure levels using remote sensing data for period from (1981) (2020). results show that values temperature specific humidity a...

The China National Climate Center and Centers for Environmental Prediction data were used in this work. Using the knowledge of synoptic principles analysis, rain snow weather process middle east from December 28 to 30, 2020 was analyzed. results show that: 1) This a large-scale precipitation process. Affected by cold wave, temperature drops sharply, many places dropped below extreme value, acco...

Abstract The performance of a new historical reanalysis, the NOAA–CIRES–DOE Twentieth Century Reanalysis version 3 (20CRv3), is evaluated via comparisons with other reanalyses and independent observations. This dataset provides global, 3-hourly estimates atmosphere from 1806 to 2015 by assimilating only surface pressure observations prescribing sea temperature, ice concentration, radiative forc...

The Zwack–Okossi vorticity tendency equation was used to calculate 500-hPa height tendencies in two intensifying Southern Hemisphere blocking events. The National Centers for Environmental Prediction– National Center for Atmospheric Research gridded reanalyses were used to make each of these calculations. The block intensification period for each event was associated with a deepening surface cy...

The origin, initiation, and dispersion behavior of the observed summertime synoptic-scale disturbances in the tropical western Pacific are studied. These westward-propagating disturbances have the strongest growth rate over the region of 130°–160°E off the equator. The three-dimensional wave activity flux associated with a wave packet in the vicinity of this region is computed. In general, wave...

Total ozone anomalies (deviation from the long-term mean) are created by anomalous circulation patterns. The dynamically produced ozone anomalies can be estimated from known circulation parameters in the layer between the tropopause and the middle stratosphere by means of statistics. Satellite observations of ozone anomalies can be compared with those expected from dynamics. Residual negative a...

Results 342 of the patients were male and 42 were female. Mean age was 21.9±0.5 years old. Month (p=0.563), season (p=0.264) and weather (p=0.327) were not associated with the occurrence rate of SPM. Mean temperatures, mean humidity, mean wind velocities of SPM occurrence day and non-occurrence day were 12.4±10.5°C : 12.8±10.5° C (p=0.504), 61.8±15.5% : 60.9±15.0% (p=0.372), 2.6±1.0m/s : 2.6±2....