气候上的

Based on prediction of recent 100 years' climatic changes with climate models, the impacts of future climatic changes on climate and environment are analyzed.

在采用气候模式对未来近百年的气候变化做出一定预测的基础上，分析未来可能出现的气候变化所造成的对气候环境方面的影响。

Analysis and comparison of the model results show that the introducing of gravity wave drag to the model can improve the model performance to some extent and result in more realistic simulation, and the effect of envelope orography on regional climate simulation is less significant than that of gravity wave drag.

通过试验结果的对比分析发现，在模式中引入地形重力波拖曳作用可在一定程度上改善模式对气候系统和要素的模拟效果，使模拟结果更符合气候实况。包络地形对模拟结果也有一定的改善，但对于细网格的区域气候模式来说，其效果不如重力波拖曳明显。

Based on the above two models, the meteorological data of Baseline (1961~ 1990), A2 (2071—2079), and B2 (2071~2090) exported directly by PRECIS were used in crop model to output yield, and the number of growth date of 11 maize stations in the future climate changed. At last, the affection of future climate changed for maize production was evaluated.

在此基础上，用PRECIS的模拟结果直接为CERES-Maize模型提供Baseline 30年(1961～1990年)、A2情景9年(2071～2079年)、B2情景20年(2071～2090年)的气候变化情景，计算现在和未来气候条件下的全国11个玉米站点的产量和生育期天数，评估未来气候变化对中国玉米生产的影响。

After decreasing wavelet transformation s boundary effect, the prediction law and assessment standard are put up based on the theory of climatic hierarchy and wavelet analysis.

论述了子波气候诊断中的边界效应和非周期性对趋势预报的影响，在消除子波变换边界效应基础上，将气候层次理论和子波诊断技术相结合，提出了气候多层次趋势预报法则和评判标准，最后利用若干气候资料进行了多层次趋势预报。

On the basis of pollen analysis of surface sample in North China, polynomial function analysis method was applied to establish pollen climate response surface of Pinus, Betula, Quercus, Artemisia, Chenopodiaceae, Compositae, Picea, Ephedra, Gramineae in North China, therefore an easy and applicable method for reconstructing palaeoclimate and palaeoenvironment with data of fossil pollen was founded; Multi-analysis method was applied to analyse the principal elements of surface sample pollen in central Inner Mongolia Steppe, the assemblages of surface sample pollen in steppe area and its relationship with vegetation type were discussed with helps from spore-pollen analysis of a peat section in Chasuqi, Inner Mongolia and 〓C chronometer, fossil pollen data were obtained with high resolution on the peat section in Chasuqi. Vegetation succession and environmental changes since Holocene at resolution of 70 years were primarily reconstructed in south Mount Daqingshan and Plain Tumete. The changes in the area were copmared with those in the neighbouring areas during the same period. It was found that Holocene environmental change had undergone the following stages: cold-arid, temperate-wet, warm-wet, temperate-arid and cold-arid, and the climatical optimum period occurred in 5000-4100 aB.

本文在对中国北方表土花粉研究的基础上，采用多项式函数回归方法建造了中国北方松属、桦属、栎属、蒿属、藜科、菊科、云杉属、麻黄属、禾本科等的花粉——气候趋势面，从而为利用化石花粉资料直接恢复古气候、古环境提供了一种方便易行的方法；采用多元分析方法对内蒙古中部草原区表土花粉进行了主成分分析，探讨了草原区表土花粉组合的规律及与植被类型的关系；本文还应用孢粉分析方法，结合〓C测年技术，通过内蒙古中部察素齐泥炭剖面高分辨率的化石花粉数据，初步恢复了大青山山地南部及土默特平原地区分辨率为70年的全新世以来植被演替和环境变迁的状况，并与邻近地区的全新世古气候、古环境进行了对比研究，研究发现，本区域全新世古环境的变迁序列基本上可以与周围地区及华北地区进行对比，其环境变迁经历了凉干～温湿～暖湿～温干～凉干的变化，且气候最适宜期出现在5000～4100aB.P。

And the surface temperatures simulated in northwestern China are low in the whole year. RegCM2 simulates the characteristic of geographical distribution and seasonal shifts of rain belt in China. But the simulated rainfall is low.

针对上述问题，我们对目前在中国应用较广泛的区域气候模式RegCM2进行了连续5年的模式气候积分，然后根据模式结果全面检验了模式性能，并重点对云—辐射参数化过程中存在问题进行了敏感性试验和改进工作，最后在改进的模式基础上研究了气溶胶的气候效应问题。

Spring weather in previous years to pick this year is middle of the climate, though a few days after May 4, poor weather, continuous rain, but spring a few days to pick the most crucial May 2-4 is fine the weather is good the middle of the season, the Yu Garden, general manager of tea tree An told reporters that won this year's spring days, the key to a good climate for a few days Tieguanyin quality spring conditions given birth.

与往年春茶采摘气候相比，今年的气候属中等偏上，虽然5月4日后几天，气候不佳，阴雨绵绵，但春茶采摘最关键的几天5月2日至4日是晴朗天气，是产好茶的时节，裕园茶业总经理林木安告诉记者，今年的春茶赢得了天时，关键几天的好气候为铁观音春茶品质赋予了先天条件。

Based on the review of the successive four assessment reports of the IPCC WGII on climate change impacts on streamflow from 1990 to 2007, it is summarized that the First and Second Assessment Reports were regarded as the first generation studies, featuring the impacts of mean climate change on streamflow and the adaptation to it, while the Third and Forth (AR4) Assessment Reports as second generation studies, emphasizing the impacts of anthropogenically forced and natural climate changes on streamflow and the adaptation to them. The progresses and issues in the research methodologies of the impacts of climate change on hydrology and water resources are analyzed.

在回顾IPCC于1990-2007年4次关于气候变化对径流影响的评估报告进展的基础上，将第一次与第二次评估报告归纳为第一代--以气候均值变化对径流影响及其适应为主要特征；第三次与第四次评估报告为第二代--突出人为气候变化与自然气候变异对径流影响及其适应问题，分析了常规的气候变化对水文水资源影响评估方法的发展过程及存在的问题。

Water Resources Information Center, Ministry of Water Resources, Beijing 100053, ChinaAbstract : Based on the review of the successive four assessment reports of the IPCC WGII on climate change impacts on streamflow from 1990 to 2007, it is summarized that the First and Second Assessment Reports were regarded as the first generation studies, featuring the impacts of mean climate change on streamflow and the adaptation to it, while the Third and Forth (AR4) Assessment Reports as second generation studies, emphasizing the impacts of anthropogenically forced and natural climate changes on streamflow and the adaptation to them. The progresses and issues in the research methodologies of the impacts of climate change on hydrology and water resources are analyzed.

在回顾IPCC于1990—2007年4次关于气候变化对径流影响的评估报告进展的基础上，将第一次与第二次评估报告归纳为第一代——以气候均值变化对径流影响及其适应为主要特征；第三次与第四次评估报告为第二代——突出人为气候变化与自然气候变异对径流影响及其适应问题，分析了常规的气候变化对水文水资源影响评估方法的发展过程及存在的问题。

Based on the data analysis and numerical simulation, the Arctic sea ice climate variability was researched, the result were as following:(1) The analysis on the seasonal cycle of the Arctic Ocean and atmosphere showed that: The seasonal surface wind is somewhat trade wind like in some regions in the Arctic. The surface air temperature is robustly determined from the underlying environments such as sea ice and Greenland glaciers. In the sea ice region the precipitation rate is larger than that of evaporation. Furthermore, the Arctic Ocean hydrology is profoundly influenced by the surrounding rivers discharge. These are the decisive factors on the ocean salinity pattern. Sea ice flux through the Fram Strait is larger in winter than in summer. From the 40s in the 20th century on, the ice volume flux has an increasing trend. The Arctic rivers flood season is about the melt period, the winter rivers discharge has a significant increasing. Correlation analysis shows that 7 to 10 years is a characteristic time scale that rivers discharge leads Fram Strait ice volume export.(2) Considering 9 major arctic rivers, the Arctic Ocean circulation was simulated through BOM. The result shows that: The BOM can reproduce the main Arctic Ocean circulation pattern. The"Islandization"which is commonly used in OGCMs to treat the North Pole, not only influences the ocean current near the pole, but also influences the current in the Northern Atlantic Ocean, thus the bogus island might influence global climate through thermohaline circulation in the Atlantic Ocean.

在资料分析和数值模拟的基础上，对北极海冰的气候变率进行了深入的研究，结果如下：(1)对北极地区大气和海洋季节循环特征的分析表明，气候平均风场在部分地区具有&信风&的性质；而气温场与海冰分布及格陵兰半岛冰原的下垫面特征有密切关系；在北极海冰区的降水量大于蒸发量，并且在全球大洋中北冰洋受到河流径流的影响最大，对北冰洋的盐度分布有决定作用；通过弗瑞姆海峡的海冰通量在冬半年大于夏半年，并且从20世纪40年代起，海冰的体积输送有增加趋势；北极河流的汛期主要在融化季节，冬季的河流流量有显著增加的趋势；相关分析表明7到10年是北极河流流量影响弗瑞姆海峡海冰体积输送的一个特征时间尺度；(2)采用BOM海洋模式对北冰洋海洋环流进行了模拟研究，在模式中考虑了北极9条主要河流的作用，结果表明该海洋模式可以较好模拟出北冰洋海洋环流的基本特征；多数大洋环流模式采用&北极岛化&的方法处理北极点，模拟结果表明&北极岛化&不仅影响到极点附近的海流，还会对相对较远的北大西洋海流造成影响，并可能通过大西洋的热盐环流对全球气候产生影响；(3)采用CSIM4海冰模式对北极海冰的气候态进行了模拟。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。