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气候变化致使沙尘暴对人类产生极大破坏 快报文章
资源环境快报,2023年第14期
作者:  李恒吉
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:556/2  |  提交时间:2023/07/31
Climate change  sand storms  
NSF-NOAA联合研究项目将借助新一代技术装备实现对风暴的快速精准预测 快报文章
地球科学快报,2023年第4期
作者:  张树良
Microsoft Word(16Kb)  |  收藏  |  浏览/下载:640/0  |  提交时间:2023/02/24
storms  storms prediction  PERiLS  NSF  NOAA  
UNEP报告评估沙尘暴对海洋的影响 快报文章
资源环境快报,2020年第22期
作者:  董利苹
Microsoft Word(15Kb)  |  收藏  |  浏览/下载:465/1  |  提交时间:2020/11/30
Sand and Dust Storms  Oceans  Impacts  Scientific Environmental Assessment  Policy Makers  
Basinwise Statistical Analysis of Factors Limiting Tropical Storm Formation From an Initial Tropical Circulation 期刊论文
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2020, 125 (11)
作者:  Raavi, Pavan Harika;  Walsh, K. J. E.
收藏  |  浏览/下载:14/0  |  提交时间:2020/08/18
tropical depressions  developing storms  nondeveloping storms  tropical cyclones  shear sheath  thermodynamical  
Short-term Impacts of Arctic Summer Cyclones on Sea Ice Extent in the Marginal Ice Zone 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (13)
作者:  Finocchio, Peter M.;  Doyle, James D.;  Stern, Daniel P.;  Fearon, Matthew G.
收藏  |  浏览/下载:26/0  |  提交时间:2020/06/16
Arctic cyclones  sea ice  reanalysis  statistical analysis  melt season  synoptic storms  
Quantifying the Solar Cycle Modulation of Extreme Space Weather 期刊论文
GEOPHYSICAL RESEARCH LETTERS, 2020, 47 (11)
作者:  Chapman, S. C.;  McIntosh, S. W.;  Leamon, R. J.;  Watkins, N. W.
收藏  |  浏览/下载:20/0  |  提交时间:2020/06/01
solar cycle  space weather  solar flares  F10  7  geomagnetic storms  extreme space weather events  
Rapid growth of new atmospheric particles by nitric acid and ammonia condensation 期刊论文
NATURE, 2020, 581 (7807) : 184-+
作者:  Liang, Guanxiang;  Zhao, Chunyu;  Zhang, Huanjia;  Mattei, Lisa;  Sherrill-Mix, Scott;  Bittinger, Kyle;  Kessler, Lyanna R.;  Wu, Gary D.;  Baldassano, Robert N.;  DeRusso, Patricia;  Ford, Eileen;  Elovitz, Michal A.;  Kelly, Matthew S.;  Patel, Mohamed Z.;  Mazhani, Tiny;  Gerber, Jeffrey S.;  Kelly, Andrea;  Zemel, Babette S.;  Bushman, Frederic D.
收藏  |  浏览/下载:39/0  |  提交时间:2020/05/20

A list of authors and their affiliations appears at the end of the paper New-particle formation is a major contributor to urban smog(1,2), but how it occurs in cities is often puzzling(3). If the growth rates of urban particles are similar to those found in cleaner environments (1-10 nanometres per hour), then existing understanding suggests that new urban particles should be rapidly scavenged by the high concentration of pre-existing particles. Here we show, through experiments performed under atmospheric conditions in the CLOUD chamber at CERN, that below about +5 degrees Celsius, nitric acid and ammonia vapours can condense onto freshly nucleated particles as small as a few nanometres in diameter. Moreover, when it is cold enough (below -15 degrees Celsius), nitric acid and ammonia can nucleate directly through an acid-base stabilization mechanism to form ammonium nitrate particles. Given that these vapours are often one thousand times more abundant than sulfuric acid, the resulting particle growth rates can be extremely high, reaching well above 100 nanometres per hour. However, these high growth rates require the gas-particle ammonium nitrate system to be out of equilibrium in order to sustain gas-phase supersaturations. In view of the strong temperature dependence that we measure for the gas-phase supersaturations, we expect such transient conditions to occur in inhomogeneous urban settings, especially in wintertime, driven by vertical mixing and by strong local sources such as traffic. Even though rapid growth from nitric acid and ammonia condensation may last for only a few minutes, it is nonetheless fast enough to shepherd freshly nucleated particles through the smallest size range where they are most vulnerable to scavenging loss, thus greatly increasing their survival probability. We also expect nitric acid and ammonia nucleation and rapid growth to be important in the relatively clean and cold upper free troposphere, where ammonia can be convected from the continental boundary layer and nitric acid is abundant from electrical storms(4,5).


  
Multimoment Ice Bulk Microphysics Scheme with Consideration for Particle Shape and Apparent Density. Part I: Methodology and Idealized Simulation 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2020, 77 (5) : 1821-1850
作者:  Tsai, Tzu-Chin;  Chen, Jen-Ping
收藏  |  浏览/下载:27/0  |  提交时间:2020/07/02
Cloud microphysics  Convective storms  Ice particles  Cloud parameterizations  Cloud resolving models  
Climatology of hail in the triple border Parana, Santa Catarina (Brazil) and Argentina 期刊论文
ATMOSPHERIC RESEARCH, 2020, 234
作者:  Beal, Alexandra;  Hallak, Ricardo;  Martins, Leila D.;  Martins, Jorge A.;  Biz, Guilherme;  Rudke, Anderson P.;  Tarley, Cesar R. T.
收藏  |  浏览/下载:10/0  |  提交时间:2020/07/02
Destructive events  Hail storms  Trends analysis  Synoptic conditions  
Quasigeostrophic Controls on Precipitating Ascent in Monsoon Depressions 期刊论文
JOURNAL OF THE ATMOSPHERIC SCIENCES, 2020, 77 (4) : 1213-1232
作者:  Murthy, Varun S.;  Boos, William R.
收藏  |  浏览/下载:15/0  |  提交时间:2020/07/02
Tropics  Convective storms  systems  Vertical motion  Monsoons  Precipitation  Vortices