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根据特吉旺气候舒适度指数划分标准和贵州省旅游气象舒适度标准,利用梵净山区域2013—2017年气象资料及旅游统计资料,通过相关性分析、回归分析等统计方法,分析了梵净山区域经济与气候舒适度指数的相关性。结果表明:“SD气候舒适度指数”标准比“特吉旺气候舒适度指数”更适合研究梵净山区域气候舒适度指数;4—10月是梵净山旅游较适宜期,与旅游收入和客流量月平均数据均有较好的吻合度;气候舒适度指数对梵净山区域旅游经济呈显著的正相关关系,梵净山站为梵净山区域旅游经济气候舒适度指数分析的关键指标站。 相似文献
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《浙江气象》2016,(1)
通过对国家新梅雨标准(49站标准)与传统梅雨标准(5站标准和20站标准)3种标准定义的梅雨区域、基本概念以及历年资料序列的气候均值和相关性的对比分析发现:1)3种标准资料差异的原因,首先是梅雨定义区域的侧重和南北两片雨期开始、结束的不一致,其次是雨期、雨日概念的定义差异和空梅年的不同处理方式;2)在反映浙江梅雨总体状态和变化方向方面是三者基本一致的,但是,三者资料逐年之间存在较大差异,在反映梅汛期间浙中的西部地区易出现洪涝的特点上,49站标准更具优势;3)在对49站标准入梅日期的影响中,江南气候区(南片)的影响明显大于长江气候区(北片),对出梅日期的影响中,长江气候区和江南气候区的作用均很重要,因此,在国家新梅雨标准的运用和研究中应该更加关注江南气候区的贡献。 相似文献
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气候系统具有内在的时空多尺度、结构多层次、本质非线性等特征。例如,从较大尺度上讲气候有冷期和暖期之分,但这个冷(或暖)期中还含有较小尺度的冷、暖期,它们也还含有更小尺度的冷、暖期。气候变化的这种多尺度和多层次性使气候资料时间序列的变化极不规则,甚至显得杂乱无章,大的小的涨落(或距平)都有,用传统的分析方法很难识别其演化过程。 相似文献
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引言我国近代气候振动,不少气候(象)学家发表过各种见解。竺可桢先生分析了我国近5000年来气候变化,提出我国气候变化经历了四个温暖期和四个寒冷期,且温暖期有越来越短,温暖程度越来越低;寒冷期越来越长,程度越来越加强的趋势。目前正处于第四个寒冷期(即近 相似文献
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(一)引言自亭丁顿(Ellsworth Huntington)氏创气候波动之说(Pulse of climte)始知气候环境不只感应物类,人文之盛衰亦蒙其影响,是以论氧候之变动实为气候学与地理学上之一大问题。白鲁克(Brooks,C.E.P,)氏云:‘推测古代气候之抡据有五:(一)先民天氧日记(二)水旱之纪述(三)人类之迁徒(四)河沼水位之涨落(五)树木之生长。’此五种古代气候之论据,先民之日记,散佚难得,水旱纪录,疏漏失详,人类迁徙,因子庞杂,河沼涨落,堙没无考者多,惟以树木之生长,到处皆是。春华秋实,历岁无间,感应旱潦,记载弥遗。其生存年龄,远过人类,历经数百或数十百年者有之,实为 相似文献
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对1951-2007年辽宁省稳定通过0℃、10℃积温和持续日数变化进行了分析.结果表明:(1)近57年来辽宁省稳定通过0℃和10℃积温和持续日数呈递增趋势,其中稳定通过10℃积温和持续日数递增趋势更明显;(2)各标准气候期稳定通过0℃和10℃积温变化趋势不同,第1个和第2个30年标准气候期呈现递增趋势较弱,最近30年标准气候期呈显著递增趋势;各标准气候期稳定通过0℃和10℃持续日数均为递增趋势,而且后期递增较前期更为显著;(3)中部和沿海城市稳定通过0℃、10℃积温和持续日数递增趋势强于北部和西部;(4)城市化引起的热岛效应是观测到的稳定通过0℃、10℃积温和持续日数递增的重要原因,而区域气候变暖则进一步加强了递增趋势. 相似文献
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作为热带气候异常的一个单位年(即气候年,climatic year),提出了“季风年(monsoonyear)”概念。季风年定义为从北半球夏季季风季节开始算起的一年。本文还认为热带的这个气候年是以亚洲季风/太平洋区域的海洋/陆地/大气耦合系统的自然属性为基础的。 相似文献
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著者在其“中国气候区域”一文中已详论过中国的气候及其分划,(气象研究所集刊第八号)但其目的纯为适应中国的需要和实用;对於不明瞭中国地理环境及名称的人则显得生疏而不易捉摸。为易於与世界其他各处的气候性质相比较及供不熟悉中国地名的人们的需要起见,爰乃根据Koeppen 氏的分类法将中国气候重新划分。 Koeppen氏在其“依照气温雨量及其年变化而分划气候区域”一文 相似文献
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Cynthia Rosenzweig 《Climatic change》1985,7(4):367-389
The environmental requirements for growth of winter, spring, and fallsown spring wheats in North America are specified and compared to temperature results from the control run of the Goddard Institute for Space Studies general circulation model (GISS GCM) and observed precipitation in order to generate a simulated map of current wheat production regions. The simulation agrees substantially with the actual map of wheat-growing regions in North America. Results from a doubled CO2 run of the climate model are then used to generate wheat regions under the new climatic conditions. In the simulation, areas of production increase in North America, particularly in Canada, due to increased growing degree units (GDU). Although wheat classifications may change, major wheat regions in the United States remain the same under simulated doubled CO2 conditions. The wheat-growing region of Mexico is identified as vulnerable due to high temperature stress. Higher mean temperatures during wheat growth, particularly during the reproductive stages, may increase the need for earlier-maturing, more heat-tolerant cultivars throughout North, America. The soil moisture diagnostic of the climate model is used to analyze potential water availability in the major wheat region of the Southern Great Plains. 相似文献
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针对WebGIS在气象业务应用系统的现状和存在问题,开发了具有自主知识产权的气象GIS网络平台。该文介绍了平台开发的背景、目标、功能结构,结合气象数据特点和业务需求分析,对系统建设中的关键技术进行详细探讨,包括智能缓存技术,基于RIA (Rich Internet Application, 富互联网应用程序) 的渲染绘制技术,气象数据监视机制以及地图服务聚合技术。基于气象GIS网络平台搭建了国家级和省级气象应用业务系统,系统运行稳定,实现了海量气象数据的网络高效发布、快速渲染绘制、数据自动监视更新以及地图服务定制等功能,对气象信息网络服务具有重要意义和应用价值。 相似文献
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The preference rankings of a rural population in central British Columbia, Canada of potential environmental effects of climate change were assessed using the psychometric method of paired comparison. The survey results were used to develop an interval scale for eight hypothetical, but potential, environmental effects including major and minor impacts to water and fish, forest ecosystems, wildlife, and scenic and recreation. Interval scales were developed for the total sample as well as sub-samples made up of females, males, town residents, non-town residents, respondents with high school or less education, and respondents with at least some post-secondary education. Major impacts on water and fish were considered to be the most serious effects followed by major impacts on forest ecosystems and major impacts on wildlife. Major effects on scenic and recreation were ranked below minor effects on water and fish. Responses from the sub-samples were similar with some minor deviations. For example, females ranked major impacts on wildlife higher than males, and males ranked major impact on scenic and recreation higher than females. However, the overall rankings of females and males were highly correlated. This study showed climate change effects on environmental goods and services in terms of human preferences. A human preferences perspective (combined with biophysical assessments) is required for determining local adaptation priorities and for guiding impacts and adaptation research. The methodology and approach has potential for broader application. 相似文献
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利用WRFDA-FSO(Forecast Sensitivity to Observation)系统,统计分析2009年和2010年5—10月青藏高原东侧常规地面和高空观测对WRF模式预报误差的贡献。结果表明:地面观测资料各要素中,温度场对模式预报误差贡献最大,风场、气压和水汽场的贡献相对小;四川东部、广西大部和云南南部边缘地区的资料对改进预报产生正贡献较大。高空资料各要素中,温度场对模式预报误差贡献最大,其次是水汽场,风场贡献最小;高空站资料对改进预报产生正贡献较大的区域主要分布在云南大部、贵州西部边缘和广西西北部边缘地区。依据误差统计结果,剔除对改进预报产生负贡献较大的地面和高空站资料后,模式降水和温度预报效果有所改善。 相似文献
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中国北方沙尘气溶胶对云和降水影响的数值模拟研究 总被引:4,自引:2,他引:2
已有的研究表明中国北方千旱半干旱地区是对流层沙尘气溶胶的主要来源之一,对当地乃至全球气候都有重要的意义.利用数值模拟研究方法探讨不同干燥程度的大气背景环境下,沙尘气溶胶数浓度对混合云形成和发展的可能影响,并采用析因试验讨论了主次影响因素.结果表明:沙尘气溶胶的增加导致降水减少、延长了云在空中存在的时间,改变了云的空间结构和微观结构.析因分析表明干旱半干旱气候背景条件下,混合云的累计降水量对沙尘气溶胶数浓度变化的敏感性要高于对大气环境湿度的敏感性;沙尘气溶胶数浓度增加导致云累计降水量的减少;沙尘气溶胶数浓度和大气环境湿度对云的累计降水量的影响是复杂的,研究结果可以用于指导降水预报业务. 相似文献
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Timothy F. Ball 《Climatic change》1986,8(2):121-134
The line that marks the boundary between the boreal forest and the tundra regions is a relatively abrupt line in central Canada and appears to reflect a clearly defined climate boundary. Research suggests that relatively small changes in the climatic conditions should result in a movement of the treeline. Such a movement was apparently reported in 1772 by Samuel Hearne based upon the observations of generations of Indians who had lived in the area. A map of his voyages indicates a tree limit that was further west in the north/south section of western Canada and further south in the east/west section of central Canada. This location and subsequent movement appears to be logical in relation to the climatic conditions that occurred in the region as a result of the Little Ice Age and the warmer conditions thereafter. 相似文献
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Wei Wei Zhang Hongsheng Cai Xuhui Song Yu Bian Yuxuan Xiao Kaitao Zhang He 《Acta Meteorologica Sinica》2020,34(1):176-188
Journal of Meteorological Research - With rapid urbanization in recent years, severe air pollution has emerged as a major issue for many regions of China, especially in some metropolises. A... 相似文献