By using NCEP/NCAR reanalysis data of monthly mean geopotential height of 500hPa, monthly MSLP, monthly mean surface temperature and monthly mean temperature in Heilongjiang Province, temperature variability of different time scale, simultaneous & previous general circulation is studied with method of diagnostic analyzing of extreme cold or warm in Heilongjiang Province, and predictive relationship has been developed by using method of screening regression and SSA-MEM as well.
Near the center of typical cold vortex, there is a cloud less area with a surrounding cloud bandThe inner cloud less area is dry and cool with subsiding motion in troposphere and the outer cloud band is wet with ascending motion extending from lower troposphere to 300-400 nab.
The result shows that effect of high SST in equator east Pacific and of the blocking situation in the Baikal Lake and of cold winter in SW Qinghai Xizang Plateau lead to drought occuring in Gansu.
The results show that there exist three warm periods and two cold periods for annual and seasonal temperature, 1960′s was the coldest decade, the temperature decreasing was most obvious in autumn, and the temperature was higher during the period of mid and last 1980′s and 1990′s.
Evaluation of the efficacy of 99mTc-labeled ascorbic acid on common cold-cough drugs in rats
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Because of this, people have been ready to embrace simplistic approaches to cold treatment, such as vitamin C and zinc.
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Ascorbic acid (vitamin C) is mostly administrated together with cough-cold drugs.
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The aim of this study was to investigate the effect of cough-cold drugs on the uptake of ascorbic acid using 99mTc-ascorbic acid (99mTc-AA) in male albino Wistar rats.
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The present data show that vitamin C might be more effective for the treatment of common cold when coadministered with PPA compared to with CPR, with APAP, or alone.
This is a brief report of a preliminary survey of certain rain-bearing systems over China in later spring and summer. In the first part, a general description of the methods of analysis used in this survey is given. As the temperature and wind fields are weak, and the precipitation is heavy, smaller intervals for the isotherms and contours in the constant pressure surface and pseudo-equivalent potential instead of potential temperature in the cross section analysis are used.In the second part, there are des...
In this paper we discuss (1) the transport of air masses between hemispheres, and (2) transport between oceans and continents in northern hemisphere.It is found, (1) that the quantity of air mass transport between two hemispheres is much greater than the mass transport between continents and oceans, (2) that generally from January to July the total air mass of northern hemisphere is gradually decreased and the total transport of air in this period to southern hemis-sphere is about 10.3 × 1018 grams, (3) tha...
Using a 2-parameter model a graphical method for predicting the height of BOO mb surface is given and practical operational, procedure is described. This method is much in accord with that given by Fj rtoft for barotropic model. For a case of intense development of cold wave we have computed three 500 mb prognostic charts for 24 hours interval It is found that the locations and intensities of the systems computed by this method are in reasonable agreement with the observed ones.