The climate data in Changbai Mountain and Dahailin region show that the global warming was very obvious in recent several decade years, especially the lowest month temperate, cold and warm periods temperature.
The result shows that the δ18O record of Z14-6 can be divided into stages 1-6 and stage 5 can be subdivided into substages a-e. The oxygen isotope record of the core has the same characteristic as the Pacific cores: V28-238 and V19-29 within 128 000 a B. P. and the oxygen isotope record indicates there are three warm periods since the Late Pleistocene.
Hare we present high resolution continuous loess_paleosol CaCO_3 record from the Beiyuan section in LinXia. Three warm periods and two serious cold periods indicate that climate experinced marked fluctuation, corelating well with the Greenlang GRIP cliimate record.
There are three cold periods (5600-5200aB.P、 4600-3600 aB.P、2500-2100aB.P.) and three warmth periods (5200-4600aB.P、,3600-2500aB.P、 2100-1800aB.P.) since 5600aB.P .
In this paper, based on a zero - dimensional energy balance model, three values of global average temperature corresponding to the steady state of model are obtained: T1 = 248. 5K, T2 = 271.9 K and T3 = 288.1 K. Among these equilibriums, T1 and T3, corresponding to cold and warm climate, respectively, are stable, and T2 is unstable.
Contrasted with those in warm period,relatively low depositional rate and low diversity of environment (indicated by little laternal variation of facies) were recorded in the interval of Late Sinian glaciation,late Ordovician to early Silurian glaciation and Permo-Carboniferous glaciation in South China which located in low latitudes.
Accordlng to the plant types the paleoclimatic information can be obtained. According to the vertical distribution of the δ13C in Dabusu Lake, has been reconstructed the paleoclimate evoltltion of this region since 15000 years as follows:15400- 14000 aB P (depth 8.10- 7.30m): the climate was cold and wet. During this stage there was a high lake level and stable environment.
Objective classification of wind fields with respect to the prevailing flow direction is performed, and wind stress and wind-curl patterns are obtained for major events in the cold and warm periods of the year.
The assemblages of warm periods were characterized by exclusively high foraminiferal abundances, which sharply decreased during the Younger Dryassic cooling.
Environmental changes presented apparent Westlies Style model: during cold period, relative humidity increased, δ18O, δ13C and CaCO3 appeared low; but in warm periods, the dry regime aggravated.
A variety of data from ancient documents and diaries provides a more detailed picture of climate of the 18th century. The best continuous records of climate over that period come from "weather diary" , in which clear sky and duration of rain (snow) were recorded daily during the first half of the 18th century, which were observed by the officers of Hangzbou, Suzhou, Nanjing and Beijing by the order of the emperor.In the temperature derived from the above mentioned records, the ratio of snow and precipitatio...
Generally,sweet peppers are grown and harvested from spring till late summer,till autumn.The hot summer days in Shanghai region severely affect the normal growth of sweet pepper and affect its autumn and winter supply. The aim of this study is to solute the problem.The study proved that under rain proof and shade facilities the sweet pepper also can be raised,grown and harvested in the seasons,protectigng from high temperature,summer drought and typhoon.So the products of sweet pepper can be supplied until ...
The 2 083 m ice core got at Vostok first reveals a continuous climatic series of the past 160 000 years over continental areas. The last glacial period, with two warming intervals, began at about 110 000 years. The temperature in the last Glacial Maximum was about 9℃ colder than the average Holocene temperature. It is confirmed that the warmest part of the Last Interglacial Period was about 2 ℃ warmer than that of the Holocene. There is a similarity between the variation of the atmospheric CO2 concentration...
温暖时期
warm periods
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