共查询到20条相似文献，搜索用时 78 毫秒
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重庆市涪陵区烤烟生产气候条件适宜性研究 总被引：1，自引：0，他引：1
涪陵区烤烟生产区位于区境东南部七乡镇.涪陵区气象局在该区域建立了烤烟生产与气候条件适宜性研究试验基地,开展烤烟与气候、烤烟与气象灾害、烤烟生产气候指标的研究分析.结果表明:适宜的气候和环境条件结合先进的种植技术,是烤烟生产获得优质高产的主要因素;干旱、低温和绵雨是烤烟生产主要气象灾害;海拔600～1000m区域为烤烟生产适宜区. 相似文献
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隆林县烤烟生产的气象条件及主要气象灾害分析 总被引：6，自引：1，他引：5
通过对隆林县烤烟生产过程中的气象条件及干旱、冰雹等主要气象灾害进行了分析,提出了趋利避害措施,以求达到烤烟种植优质增产的目的. 相似文献
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气象灾害对烤烟产量的影响及对策 总被引：5，自引：0，他引：5
利用凤阳县１９４９－１９９２年烤烟单产资料，划分出该县烤烟单产丰歉年景，运用谐波分析法分析了烤烟单产歉收或严重歉收年景与气象灾害的关系及其随时间变化的规律，并尝试预测未来若干年内气象灾害年的分布，在上述分析的基础上探讨了相应的对策。 相似文献
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分析赫章县1950－1997年光、温、水等农业气象条件，针对生产优质烤烟所需的气象条件对赫章县不同海拔高度进行划分，并结合常出现的气象灾害提出相应对策。 相似文献
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尹仔锋 《沙漠与绿洲气象(新疆气象)》2008,2(5):60-61
随着业务系统发展,用于数值预报的全球大气观测资料实时分析缺乏时间上的连续性,对观测资料的再分析——有更完整的资料,更高的质量控制,稳定、先进的同化模式和分析系统——极大地提高了记录的均一性,使其可用于监测气候变化。这一工作现在被称为“再分析（reanalysis）”。 相似文献
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XIN Yufei Annette RINKE BIAN Lingen Klaus DETHLOFF XIAO Cunde Moritz MIELKE 《大气科学进展》2010,27(6):1453-1472
Climate and forecast mode simulations with the regional climate model
HIRlam-ECHAM(HIRHAM) are evaluated over a pan-Antarctic domain. The ability
of the model to simulate temperature and wind profiles in the troposphere is
quantified by comparing its results with radiosonde data acquired from the
Davis station for January and July 2007. Compared to the climate mode, the
forecast mode was found to deliver improved results for temperature and wind
simulations at the near surface and in the lower troposphere. The main
remaining model bias found was the under-representation of low-level wind
jets. Based on ensemble simulations, it is shown that a distinct internal
variability is inherent in the climate mode simulations, and associated
areas of reduced predictability over Antarctica are identified. 相似文献
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通过分析《气候与能源2030政策框架》（以下简称《框架》）方案要点,认为欧盟2030年的减排目标相对2020年承诺目标更为积极,可再生能源目标略高于之前官方预期。由于东欧国家的参与,欧盟一方面获得了这些国家盈余的排放配额,帮助欧盟作为一个整体实现减排目标;另一方面,成员国经济发展水平差异增大,导致欧盟施行相对积极的环境政策阻力加大,未来大幅调整减排目标的可能性不大。《框架》目标将可能对2020年后国际碳市场需求预估产生影响,未来国际碳市场的健康运行,将不仅需要欧盟外的发达国家提出具有雄心的减排目标,也需要欧盟提高减排目标,增加其对于国际减排配额的需求;此外,欧盟辅助实现40%减排目标的相关生产标准和措施,可能对未来全球自由贸易产生影响,其他国家尤其是对外贸易依存度较高的发展中国家需要密切关注相关动向。《框架》方案所提出的以应对气候变化引领和促进经济发展、采用组合目标且针对不同目标采取不同实现形式、展现制定目标的透明度、充分考虑成员国差异等提法和操作方式值得中国借鉴。 相似文献
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Approaches for Aggregating Heterogeneous Surface Parameters and Fluxes for Mesoscale and Climate Models 总被引：2，自引：0，他引：2
Land surface and climate processes possess dynamics and heterogeneities across a wide range of scales. This study explores the utility of, and procedures for, using local scale measurements to obtain large-scale information. An aggregation scheme is proposed to bridge the scale gap between the scale of measurements including remote sensors and climate and mesoscale models. The proposed scheme derives a set of effective parameters which obeys the energy balance equation exactly and partitions the surface fluxes accurately at different scales. It produces a unique set of aggregated land surface parameters that are easily measurable through remote sensing and have sound mathematical and physical basis. It is shown that aggregated ground heat flux, emissivity and albedo may be obtained by simple areally weighted averaging while temperature, aerodynamic and surface resistances require more involved aggregation operators. The effective surface temperature, although it requires a complicated operator involving subgrid-scale temperature and surface emissivity, is easily measurable through remote sensing. The proposed scheme was compared and contrasted with existing effective parameter approaches. It was shown that several effective parameters of the previous schemes can be easily derived from the proposed scheme by introducing additional assumptions and simplifications. 相似文献
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随着社会经济的发展,遵义市人工影响天气工作规模不断扩大,在实际工作中,强化管理保安全,服务到位促发展,取得了较好的社会经济效益,受到社会各界的广泛关注和认可,得到各级政府的重视和支持,本文介绍了遵义市在开展人工影响天气工作中的一些具体做法. 相似文献
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This paper examines the potential role of forest set-asides in global carbon sequestration policy. While set asides that protect
forests from timber harvests and land-use conversion may alleviate concerns with permanence, and they may provide large ancillary
environmental benefits, they may also lead to large leakage. This paper uses a global land use and forestry model to examine
the efficiency of three crediting schemes for set-asides. The results show that if set-asides are integrated into a global
forestry carbon sequestration program that includes a wide range of other management options, then 300 million hectares of
land would be set-aside, and up to 128 Pg C could be sequestered in global forests by 2105. Under alternative policies that
focus exclusively on set-asides, more forestland can be set-asides, up to 3.2 billion hectare, but these policies invite large
leakage in the near-term, and in the long-run, they less net carbon is removed from the atmosphere. Specifically, leakage
is estimated to be 47–52%, depending on the policy, and by the end of the century, up to 17% less carbon will be sequestered
in all forests. 相似文献
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