نتایج جستجو برای: air temperature at 850 hpa
تعداد نتایج: 4086664 فیلتر نتایج به سال:
North East of Iran sometime is influenced by heavy precipitation (HP) that causes plentiful damages. This paper aim to classifying and identifying the atmospheric circulation patterns related to heavy precipitation. This work increases my understanding from dynamic mechanisms that is generated by heavy precipitation. In this research, a heavy precipitation day has been considered if at least in...
In view of the limited predictability heavy rainfall (HR) events and understanding physical mechanisms governing initiation organization associated mesoscale convective systems (MCSs), a composite analysis 58 HR over warm sector (i.e., far ahead surface cold front), referred to as WSHR events, South China during months April June 2008~2014 is performed in terms precipitation, large-scale circul...
In this article we describe a high-precision laboratory measurement targeting the R(6) manifold of the 2ν3 band of 12CH4. Accurate physical models of this absorption spectrum will be required by the Franco-German, Methane Remote Sensing LIDAR (MERLIN) space mission for retrievals of atmospheric methane. The analysis uses the Hartmann-Tran profile for modeling line shape and also includes line-m...
Daily June-July melt fraction variations over the Greenland ice sheet (GIS) derived from the Moderate Resolution Imaging Spectroradiometer (MODIS) (2000-2013) are associated with atmospheric blocking forming an omega-shape ridge over the GIS at 500 hPa height. Blocking activity with a range of time scales, from synoptic waves breaking poleward (<5 days) to full-fledged blocks (≥5 days), brings ...
Vapor pressure 5.29 hPa at 25°C Surface tension 69.6 mN/m at 20°C and 1000 mg/L Water solubility 1000 g/l at 25°C Partition coefficient n-octanol/water (log value) 0.46 @ 25°C Flash point 48.5°C at 1013 hPa Flammability Flammable liquid cat. 3 The substance has no pyrophoric properties and does not liberate flammable gases on contact with water. Explosive properties non explosive Self-ignition ...
InGaN/GaN multiple quantum wells (MQWs) were grown with hydrogen treatment at well/barrier upper interface under different temperatures. Hydrogen treatment temperature greatly affects the characteristics of MQWs. Hydrogen treatment conducted at 850 °C improves surface and interface qualities of MQWs, as well as significantly enhances room temperature photoluminescence (PL) intensity. In contras...
A heat pipe exchanger was adopted to recover the engine exhaust energy and its internal gas pressure. Velocity and temperature distribution were obtained with the computational fluid dynamics software called ‘FLUENT’. Based on the simulation results, the structure of the exchanger was improved, and its working performance was verified by experiments. The experiments showed that the pressure los...
For a synoptic analysis of high polluted days in 13 and 14 November 2007, a combinatorial synoptic analysis was used. From methodology prospect, the present study has utilized the "circular environment" synoptic approach and with respect to the restrictions on very high-polluted days in Mashhad city, the subjective synoptic analysis used for data processing and analyzing the prevailin...
[1] The phase of precipitation is important for weather forecasts, land hydrology and remote sensing. To quantify the temperature and pressure dependence of snow frequency (F, in %) when precipitation occurs, we have analyzed 3-hourly weather reports of surface air temperature (Ts, C) and pressure (Ps), and snow and rain occurrences from over 15,000 land stations and available ship observations...
[1] The air sea interaction processes over the Indian Ocean are studied using the satellite data from the Tropical Rainfall Measuring Mission Satellite for two contrasting monsoon years, namely 2002 (deficit) and 2003 (normal). The moisture transport for the two contrasting years was also analyzed using the NCEP/NCAR reanalysis data. Linear correlation coefficient between the convective heating...
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