The 13th and 14th Workshops on Antarctic Meteorology and Climate     

Matthew A.LAZZARA  Sophie A.ORENDORF  Taylor P.NORTON  Jordan G.POWERS  David H.BROMWICH  Scott CARPENTIER  John J.CASSANO  Steven R.COLWELL  Arthur M.CAYETTE  Kirstin WERNER 《大气科学进展》2020,37(5):423-430

1.Overview In July 2018,the Antarctic community came together to meet at the 13th Workshop on Antarctic Meteorology and Climate(WAMC)in Madison,Wisconsin,USA(Fig.1);and in the following year in June 2019,the 14th WAMC was held in Charleston,South Carolina,USA(Fig.2).With a growing history,the WAMC addresses the topics of Antarctic meteorology and climate(Kameda et al.,2008;Colwell et al.,2016;Lazzara et al.,2018)as well as weather-related issues of scientific and operational support.The workshops bring together researchers,operational forecasters,numerical modelers,observational specialists,and students.The themes of both workshops included Antarctic meteorological observations,Antarctic atmospheric numerical modeling,Antarctic meteorological and climate research,and Antarctic weather forecasting and operational services.The 2018 and 2019 WAMC were both followed by a one-day focus on the Year of Polar Prediction-Southern Hemisphere(YOPP-SH),when preparations and follow-up discussions were made with regard to the YOPP Special Observing Period from 16 November 2018 to 15 February 2019.  相似文献   

Objective verifications and false alarm analyses of western North Pacific tropical cyclone event forecasts by the ECMWF 32-day ensemble   总被引：1，自引：0，他引：1  

Hsiao-Chung Tsai  Russell L. Elsberry  Mary S. Jordan  Frédéric Vitart 《Asia-Pacific Journal of Atmospheric Sciences》2013,49(4):409-420

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An X-ray emission-line spectrum of Nova V382 Velorum 1999     

J.-U. Ness  S. Starrfield  C. Jordan  J. Krautter  J. H. M. M. Schmitt 《Monthly notices of the Royal Astronomical Society》2005,364(3):1015-1024

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Modelling the chromosphere and transition region of ε Eri (K2 V)     

S. A. Sim  C. Jordan 《Monthly notices of the Royal Astronomical Society》2005,361(3):1102-1120

Measurements of ultraviolet line fluxes from Space Telescope Imaging Spectrograph and Far-Ultraviolet Spectroscopic Explorer spectra of the K2-dwarf ε Eri are reported. These are used to develop new emission measure distributions and semi-empirical atmospheric models for the chromosphere and lower transition region of the star. These models are the most detailed constructed to date for a main-sequence star other than the Sun. New ionization balance calculations, which account for the effect of finite density on dielectronic recombination rates, are presented for carbon, nitrogen, oxygen and silicon. The results of these calculations are significantly different from the standard Arnaud & Rothenflug ion balance, particularly for alkali-like ions. The new atmospheric models are used to place constraints on possible first ionization potential (FIP)-related abundance variations in the lower atmosphere and to discuss limitations of single-component models for the interpretation of certain optically thick line fluxes.  相似文献   

Inertial Waves and the Earth's Outer Core     

K. D. Aldridge 《Geophysical Journal International》1975,42(2):337-345.

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Earth structure from fundamental and higher-mode waveform analysis     

Arthur L. Lerner-Lam  Thomas H. Jordan 《Geophysical Journal International》1983,75(3):759-797

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Does public policy support or undermine climate change adaptation? Exploring policy interplay across different scales of governance   总被引：4，自引：0，他引：4  

Kate Urwin  Andrew Jordan   《Global Environmental Change》2008,18(1):180-191

Policy makers have now recognised the need to integrate thinking about climate change into all areas of public policy making. However, the discussion of ‘climate policy integration’ has tended to focus on mitigation decisions mostly taken at international and national levels. Clearly, there is also a more locally focused adaptation dimension to climate policy integration, which has not been adequately explored by academics or policy makers. Drawing on a case study of the UK, this paper adopts both a top-down and a bottom-up perspective to explore how far different sub-elements of policies within the agriculture, nature conservation and water sectors support or undermine potential adaptive responses. The top-down approach, which assumes that policies set explicit aims and objectives that are directly translated into action on the ground, combines a content analysis of policy documents with interviews with policy makers. The bottom-up approach recognises the importance of other actors in shaping policy implementation and involves interviews with actors in organisations within the three sectors. This paper reveals that neither approach offers a complete picture of the potentially enabling or constraining effects of different policies on future adaptive planning, but together they offer new perspectives on climate policy integration. These findings inform a discussion on how to implement climate policy integration, including auditing existing policies and ‘climate proofing’ new ones so they support rather than hinder adaptive planning.  相似文献   

Magnesite growth rates as a function of temperature and saturation state   总被引：1，自引：1，他引：0  

Giuseppe D. Saldi  Guntram Jordan  Jacques Schott  Eric H. Oelkers 《Geochimica et cosmochimica acta》2009,73(19):5646-5657

Magnesite growth rates and step velocities have been measured systematically as a function of temperature from 80 to 105 °C and saturation state in 0.1 M NaCl solutions using hydrothermal atomic force microscopy (HAFM). The observations indicate that at these conditions magnesite precipitation is dominated by the coupling of step generation via spiral growth at screw dislocations and step advancement away from these dislocations. As these two processes occur in series the slowest of these dominates precipitation rates. At 100 °C magnesite growth rates (r) determined by HAFM are consistent with