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本文简要介绍了近年来国际台风界(包括IPCC,IWTC及ESCAP/WMO台风委员会)在全球气候变化对台风活动影响方面的最新评估结果,讨论了目前评估工作面临的科学问题和挑战及下一阶段台风气候变化领域的优先研究主题的建议. 相似文献
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AbstractThe Collaborative Research Project (CRP)—a mathematics research experience for undergraduates—offers a large-scale collaborative experience in research for undergraduate students. CRP seeks to widen the audience of students who participate in undergraduate research in mathematics. In 2015, the inaugural CRP had 100 undergraduate participants from across the United States; they collaborated on a month-long research effort applying tropical geometry to phylogenetics. CRP is envisioned as an annual event, one that scales to accommodate large numbers of interested students. This article describes the motivation for CRP, its structure, and the results of its inaugural iteration, and closes by assessing its future. 相似文献
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Annabelle Tan Kai Lin; 《Curator: The Museum Journal》2024,67(1):133-142
“Tropicality” has historically been used as an epistemological tool by colonial settlers and thereafter local rulers to naturalize and espouse Western rationality and modernity. Singapore is no exception to this lingering Western framing, which continues to define state narratives of success and heritage. “Tropicality” as a hegemonic force manifests in infrastructures of large physical networks, institutionalized knowledges, and media representations. This paper dissects three chronological dominant modes of “tropicality”—the colonial, the nation-building, and the contemporary neoliberal mode—alongside their corresponding subaltern lived worlds that speak of an alternative “tropicality” often unnoticed (Figure 1). These diametric strands are studied through hegemonic infrastructure and everyday acts that resist, appropriate, or hybridize these power-laden spaces. A heterogenous methodology was adopted, capturing the epistemologies and metis employed in dominant and alternative tropicalities, respectively. Maps, charts, and archives are used to study the former; ethnographic observation, family memory, and affective experiences elucidate the latter. In this paper, I focus on the nation-building mode of “tropicality”, which shaped Singapore's rapid urbanization in the 1960s. Modernist public housing schemes borrowed from the Tropical Architecture movement are situated within a larger infrastructural field that de-skilled, cleansed, and civilized an “unruly” population, conflating natural and social order. However, these attempts at creating modern subjects were thwarted by everyday resistance performed at a critical mass, in which displaced populations tapped upon past metis, habitus, and ecological aesthetics to appropriate alienating modern infrastructure. Through these ad hoc infrastructural reconfigurations, a hybrid modern “tropicality” was negotiated. It is through deprivileging infrastructures of “tropicality” and drawing out alternative “infra-structures” of multiple, lived tropical worlds that we may move toward post-tropicality—a mentality built on an expanded understanding of how our modern environment is and has been shaped equally by dominant, neocolonial forces and also forsaken memories, practices, and everyday acts of resistance, which hold the key to alternative futures beyond the limited scope delineated by our inherited “tropical modernity”. 相似文献
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为给航行中船舶防避热带气旋提供参考,利用西北太平洋1977—2018年的热带气旋资料,分别统计分析了热带气旋近中心最大平均风速、10级和7级大风圈的半径、10级和7级大风圈最大半径的偏向以及10级和7级大风圈半径与热带气旋强度的关系。在此基础上,提出一种综合考虑大风范围和位置预报误差的船舶避离热带气旋的方法,并举实例加以说明,为船舶防避热带气旋提供一种思路。 相似文献
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杨亚新 《上海海事大学学报》2015,36(4):74-78
为给航行船舶有效避离热带气旋提供参考,利用日本发布的2011—2013年亚洲地面分析图和西北太平洋波浪分析图,对发生在西北太平洋上的61个热带气旋的大风和波浪分布特征进行统计分析.主要结论:热带气旋的近中心最大平均风速与中心气压存在较好的二次非线性关系;10级以上大风一般以热带气旋为中心呈对称分布,7级以上大风以热带气旋为中心呈不对称分布的居多,7级以上大风最大范围一般出现在热带气旋前进方向的右半圆;10级以上大风圈平均半径为73.5 n mile,7级以上大风圈平均半径为187.9 n mile;热带气旋中的最大波高中心与热带气旋中心一般不重合,最大波高中心和4 m浪最大范围主要出现在热带气旋前进方向的右半圆,特别是右后半圆;最大波高中心与热带气旋中心平均距离为93 n mile左右,4 m等波高线与热带气旋中心平均距离为235 n mile左右. 相似文献
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根据办刊实践,探讨地方性热区农业科技期刊的办刊理念、刊物定位、选稿及稿件处理、编辑工作方式等相关问题. 相似文献
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浙江省热带气旋风雨空间分布特征研究 总被引：1，自引：0，他引：1
对影响浙江省热带气旋的风雨进行了区划,同时还对其带来的暴雨类型进行了分类。研究表明,浙江可划分为5个风雨影响区,东南沿海区是热带气旋风雨严重影响区．浙北沿海区为大风严重影响、暴雨较严重影响区,浙北内陆区为风雨影响较严重区,浙南区以暴雨严重影响为主．浙西区风雨影响均较轻;不同路径的热带气旋带来的暴雨空间分布也可划分为5型,其中Ⅰ型和Ⅱ型降水强度最强．其典型移动路径为福州以北至象山港以南之间登陆台风。本文的热带气旋风雨影响区划较为客观地反映了所有影响浙江热带气旋的风雨概况,但在业务应用中需根据具体情况作相应调整。 相似文献
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《中国科学院院刊(英文版)》2014,(3)
<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence 相似文献
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Sulochana Gadgil 《Resonance》2006,11(11):8-21
The most important facet of weather and climate in a tropical region such as ours, is rainfall. I have considered the observed space-time variation of the rainfall over the Indian region, in the first article1 in this series. The ultimate aim of monsoon meteorology is to gain sufficient insight into the physics of this variation for predicting the important facets, with the help of atmospheric models based on the laws of dynamics and thermodynamics. Here I consider what we know about the rain-giving systems. 相似文献