نتایج جستجو برای: geopotential high at 500 hpa level
تعداد نتایج: 5424958 فیلتر نتایج به سال:
this research is a study on indicators of listening instruction in iranian english as a foreign language (efl) curriculum at guidance school and high school educational levels. this thesis aims at determining: a) the indicators of listening instruction at guidance school and high school efl curriculum. b) the indicators of listening instruction in irans guidance school and high school efl curri...
In the paper, the atmospheric conditions in the Persian Gulf region and southwest of Iran were studied by analyzing several case studies in cold and warm seasons. For this purpose, three case studies were selected from the dust events occurred between September and March and have been studied using meteorological stations data, satellite imagery, ECMWF global data, and HYSPLIT and DREAM outputs...
The effective patterns and mechanisms of synoptic systems during the wet and dry spells in Midwest of Iran(MWI) analyzed and discussed on seasonal scales from 1974 to 2003. Synoptic Analysis is based on synoptic chartson Sea Level Pressure (SLP), 850 and 500 Hpa levels. The results of synoptic analysis show that dry spells in MWIare mostly corresponded to Azores High (AZH) intensifying and its ...
Abstract The Tibetan Plateau vortex (TPV) is a key system triggering rainfall over the (TP) during boreal summer. TPV genesis mechanisms are complicated and its classification great challenge. This study attempts to elucidate these aspects. By introducing standardized index of 24-h increment equivalent potential temperature $$\Delta_{24h} \theta_{{\text{e}}}$$ <mml:math xmlns:mml="http://www.w3...
Characteristics of extreme precipitation over Yellow River Loop Valley (YRLV) and links to European blocking are investigated in this study. Spatial temporal analysis shows that it contributes more than 30% the total summer YRLV is characterized by a strong short period local rainfall. Most rains occur July August. Two typical circulation patterns were identified using k-means clustering method...
the present research study attempted to find out the extent to which two pre-task activities of “glossary of unknown vocabulary items” and “content related support” assisted efl language learners with their performance on listening comprehension questions across two different proficiency levels (low and high). data for this study were obtained from a total of 120 language learners, female and m...
One of the remarkable environmental characteristics tropical cyclone (TC) Hagibis (2019) was positive sea surface temperature (SST) anomaly observed in western North Pacific Ocean. In this study, an ensemble-based sensitivity experiment conducted with a nonhydrostatic model, focusing on impact SST TC motion. The analyzed (warm run) moved faster near mainland Japan than lowered (cold run), as wa...
Using daily minimum temperature data at 2481 stations provided by the National Meteorological Information Center (China) and reanalysis from NCEP/NCAR during period 1980 to 2019, effects of atmospheric low frequency oscillations (LFOs) on regional strong cooling events (RSCEs) in winter northern China are investigated, extended range forecast signals RSCEs extracted. The results show that: (1) ...
there is less published research about how teachers in efl contexts respond to students who are relatively less mature and less competent l2 writers. while writing researchers have examined various issues concerning peer and teacher response in writing-oriented classes, little research has centered on the effect of collaborative tasks particularly dictogloss on writing skills. output collaborat...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید