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Binary interaction of typhoons Soulik and Cimaron in 2018—Part Ⅰ:Observational characteristics and forecast error

Tropical Cyclone Research and Review 2021年第1期10卷 32-42页

作者： Eun-Jeong Cha Sug-gyeong Yun il-ju moon Dong-Hoon Kim Meso-scale Research Team Convergence Meteorological Research DepartmentNational Institute of Meteorological SciencesKorea Meteorological AdministrationSeogwipoRepublic of Korea Typhoon Research Center Jeju National UniversityJejuRepublic of Korea Artificial Intelligence Convergence Research Center Inha UniversityIncheonRepublic of Korea

To understand structural changes and forecast error,a case study of binary typhoons in the western North Pacific(WNP)of 2018 was investigated using best track and reanalysis *** was generated on August 16 and Cimaron was generated on August 18,*** 19 th typhoon Soulik and 20 th typhoon Cimaron co-existed from August 18 to 24 and approached each *** was located on the western side and Cimaron was located on the eastern side of the *** were located approximately 1300 km from each other at 00 UTC August *** Soulik structure began changing around August 22 and became weak and slow,while Cimaron maintained its intensity,size,and moving *** observational evidence is likely caused by the binary interaction between two typhoons within a certain distance and environmental steering flow,such as the location of the North Pacific high and strong jet stream of the northern flank of the North Pacific *** was initially forecasted to make landfall and reach Seoul;however,its track changed from northward to northeastward from August 21 to 23 according to both official guidance and unified model(UM).Four global numerical weather prediction models forecasted different tracks of *** and JGSM forecasted a northward track whereas ECMWF and GFS showed a northeastward track for 12 UTC August 21 through 12 UTC August *** latter models were similar to the best *** track forecast error and spread of Soulik were larger than those of *** mean absolute error of the maximum wind speed of Soulik was similar to the average of total typhoons in 2018.

关键词： Typhoon Soulik Cimaron Binary typhoon interaction Structure change Forecast track Intensity error

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Preface to the Special Issue:Climate Change and Variability of Tropical Cyclone Activity

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Advances in Atmospheric Sciences 2022年第2期39卷 203-204页

作者： Liguang WU Bin WANG Johnny CLCHAN Kyung-Ja HA il-ju moon jun MATSUMOTO Zhemin TAN Ke FAN Department of Atmospheric and Oceanic Sciences Fudan UniversityShanghai 200438China International Pacific Research Center School of Ocean and Earth Science and TechnologyUniversity of HawaiiHonoluluHI 96822USA School of Energy and Environment City University of Hong KongHong KongChina Research Center for Climate Sciences Pusan National UniversityBusan 46241South Korea Typhoon Research Center Jeju National UniversityJeju 63243South Korea Research Center for Climatology Department of GeographyTokyo Metropolitan UniversityTokyo 192-0392Japan School of Atmospheric Sciences Nanjing UniversityNanjing 210023China School of Atmospheric Sciences Sun Yat-Sen UniversityZhuhai 519082China

Tropical cyclones(TCs) are one of the most destructive natural phenomena on Earth in terms of human-life and economic losses. It is currently a matter of prodigious public and scientific interest how TC activity has changed and will change in a warming climate. This special issue focuses on a challenging subject raised in the Intergovernmental Panel on Climate Change(IPCC) report and numerous research papers.

关键词： warming Earth raised

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Recent progress on the seasonal tropical cyclone predictions over the western North Pacific from 2014 to 2020

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Tropical Cyclone Research and Review 2022年第1期11卷 26-35页

作者： Eun-Jeong Cha Se Hwan Yang Yu Sun Hyun Chang-Hoi Ho il-ju moon Meso-scale Meteorological Phenomenon Research Team National Institute of Meteorological SciencesKorean Meteorological AdministrationJejuRepublic of Korea National Typhoon Center Korean Meteorological AdministrationJejuRepublic of Korea School of Earth and Environmental Sciences Seoul National UniversitySeoulRepublic of Korea Typhoon Research Center Jeju National UniversityJejuRepublic of Korea

This study summarized the procedure for the seasonal predictions of tropical cyclones(TCs)over the western North Pacific(WNP),which is currently operating at the Korea Meteorological Administration(KMA),Republic of *** methodology was briefly described,and its prediction accuracy was *** predictions were produced by synthesizing spatiotemporal evolutions of various climate factors such as El Ni no–Southern Oscillation(ENSO),monsoon activity,and Madden–julian Oscillation(MJO),using four models:a statistical,a dynamical,and two statistical–dynamical *** KMA forecaster predicted the number of TCs over the WNP based on the results of the four models and season to season climate *** seasonal prediction of TCs is announced through the press twice a year,for the summer on May and fall on *** present results showed low accuracy during the period 2014–*** advance forecast skill,a set of recommendations are suggested.

关键词： Tropical cyclones Seasonal prediction Western north pacific Statistical model Statistical-dynamical model Dynamical model Forecast error and verification

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Two climate factors in May that affect Korean rainfall in September

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Acta Oceanologica Sinica 2013年第1期32卷 32-47页

作者： CHOI Ki-Seon moon il-ju National Typhoon Center Korea Meteorological Administration College of Ocean Science/Ocean and Environment Research Institute Jeju National University

This study revealed a high positive correlation between rainfall in Korea during September and the trade wind （TW）/Arctic Oscillation （AO） index in May that combines two climate factors, low-level TWs and the AO. This correlation was identified on the basis of the difference in the 850 hPa streamline analysis between the positive and negative phases selected using the combined TW/AO index. In May, the spatial pattern of the anomalous pressure systems is similar to that in the positive AO phase. These anomalous pressure sys- tems continue in june to August （JJA） and September, but the overall spatial distribution shifts a little to the south. Particularly in September, a huge anomalous anticyclone centered over the southeast seas of Japan strengthens in most of the western north Pacific region and supplies a large volume of warm and humid air to the region near Korea. This characteristic is confirmed by the facts that during the positive TW/AO phase, the subtropical western north Pacific high （SWNPH） is more developed to the north and that the continu- ous positioning of the upper troposphere jet over Korea from May to September strengthens the anomalous upward flow, bringing warm and humid air to all layers. These factors contribute to increasing September rainfall in Korea during the positive TW/AO phase. Because the SWNPH develops more to the north in the positive phase, tropical cyclones tend to make landfall in Korea frequently, which also plays a positive role in increasing September rainfall in *** above features are also reflected by the differences in average rainfall between the six years that had the highest May Nifio 3.4 indices （El Niflo phase） and the six years that had the lowest May Niflo 3.4 indices （La Nifia phase）.

关键词： anomalous pressure Arctic Oscillation Korea low-level trade wind rainfall tropical cyclone

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An update on the influence of natural climate variability and anthropogenic climate change on tropical cyclones

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Tropical Cyclone Research and Review 2023年第3期12卷 216-239页

作者： Suzana J.Camargo Hiroyuki Murakami Nadia Bloemendaal Savin S.Chand Medha S.Deshpande Christian Dominguez-Sarmiento juan Jesús Gonz´alez-Alem´an Thomas R.Knutson I.-I.Lin il-ju moon Christina M.Patricola Kevin A.Reed Malcolm J.Roberts Enrico Scoccimarro Chi Yung(Francis)Tam Elizabeth J.Wallace Liguang Wu Yohei Yamada Wei Zhang Haikun Zhao Lamont-Doherty Earth Observatory Columbia UniversityPalisadesNYUSA National Oceanographic and Atmospheric Administration/Geophysical Fluid Dynamics Laboratory PrincetonNJUSA University Corporation for Atmospheric Research BoulderCOUSA Vrije University Amsterdam AmsterdamNetherlands Federation University Australia BallaratVictoriaAustralia Indian Institute of Tropical Meteorology Ministry of Earth SciencesPuneIndia Instituto de Ciencias de la Atmosfera y Cambio Clim´atico Universidad Nacional Autonoma de Mexico(UNAM)Mexico CityMexico Spanish State Meteorological Agency(AEMet) MadridSpain National Taiwan University TaiwanChina Jeju National University JejuRepublic of Korea Iowa State University AmesIAUSA Stony Brook University Stony BrookNYUSA Met Office ExeterUnited Kingdom Fondazione Centro Euro-Mediterraneo sui Cambiamenti Climatici BolognaItaly The Chinese University of Hong Kong Hong KongChina Old Dominion University NorfolkVAUSA Fudan University ShanghaiChina Japan Agency for Marine-Earth Science and Technology YokohamaJapan Utah State University LoganUTUSA Nanjing University of Information Science and Technology NanjingChina

A substantial number of studies have been published since the Ninth International Workshop on Tropical Cyclones(IWTC-9)in 2018,improving our understanding of the effect of climate change on tropical cyclones(TCs)and associated hazards and *** studies have reinforced the robustness of increases in TC intensity and associated TC hazards and risks due to anthropogenic climate *** modeling and observational studies suggested the potential influence of anthropogenic climate forcings,including greenhouse gases and aerosols,on global and regional TC activity at the decadal and century time ***,there are still substantial uncertainties owing to model uncertainty in simulating historical TC decadal variability in the Atlantic,and the limitations of observed TC *** projected future change in the global number of TCs has become more uncertain since IWTC-9 due to projected increases in TC frequency by a few climate models.A new paradigm,TC seeds,has been proposed,and there is currently a debate on whether seeds can help explain the physical mechanism behind the projected changes in global TC *** studies also highlighted the importance of large-scale environmental fields on TC activity,such as snow cover and air-sea *** projections on TC translation speed and medicanes are new additional focus topics in our *** and future research are proposed relevant to the remaining scientific questions and assisting policymakers.

关键词： tropical climate variability

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Erythrocytes serve as a template to create nanozymes with uniform Fe single-atom sites for healing bacteria-infected wound

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Science China(Life Sciences) 2024年第9期67卷 2048-2050页

作者： Thinh Viet Dang moon il Kim Department of BioNano Technology Gachon UniversitySeongnam 13120Republic of Korea

Bacterial infection is recognized as one of the biggest global health threats,causing millions of people's death every year(Wang et al.,2020).Traditional antibiotics-based therapies have been widely utilized to control this issue(Kohanski et al.,2010);however,their excessive use leads to the emergence of antibioticresistant bacteria,endangering to human health(Levy and Marshall,2004).

关键词： template healing utilized

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Identical-video retrieval using the low-peak feature of a video's audio information

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Journal of Zhejiang University-Science C(Computers and Electronics) 2010年第3期11卷 151-159页

作者： Myoung-beom CHUNG il-ju KO Department of Media Soongsil University

The recognition and retrieval of identical videos by combing through entire video files requires a great deal of time and memory space. Therefore, most current video-matching methods analyze only a part of each video's image frame information. All these methods, however, share the critical problem of erroneously categorizing identical videos as different if they have merely been altered in resolution or converted with a different codec. This paper deals instead with an identical-video-retrieval method using the low-peak feature of audio data. The low-peak feature remains relatively stable even with changes in bit-rate or codec. The proposed method showed a search success rate of 93.7% in a video matching experiment. This approach could provide a technique for recognizing identical content on video file share sites.

关键词： Video retrieval Video DNA Audio signal processing Audio feature extraction

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Nonlinear Finite Element Analysis of Ocean Cables

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海洋工程：英文版 2004年第4期18卷 537-550页

作者： Nam-il KIM Sang-Soo JEON moon-Young KIM Department of Civil-Environmental Engineering SungKyunKwan University Jangan-Gu Suwon Kyongki-Do 440-746 S. Korea Highway and Transportation Technology Institute Korea Highway Corporation San 28-1 Sancheok-Ri Dongtan-Myeon Hwaseong City S. Korea Department of Civil-Environmental Engineering SungKyunKwan University Jangan-Gu Suwon Kyongki-Do 440-746 S. Korea

This study has focused on developing numerical procedures for the dynamic nonlinear analysis of cable structures subjected to wave forces and ground motions in the ocean. A geometrically nonlinear finite element procedure using the isoparametric curved cable element based on the Lagrangian formulation is briefly summarized. A simple and accurate method to determine the initial equilibrium state of cable systems associated with self-weights, buoyancy and the motion of end points is presented using the load incremental method combined with penalty method. Also the Newmark method is used for dynamic nonlinear analysis of ocean cables. Numerical examples are presented to validate the present numerical method.

关键词： nonlinear cable wave finite element analysis

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Adsorption and photocatalytic degradation of bisphenol A using TiO2 and its separation by submerged hollowfiber ultrafiltration membrane

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Journal of Environmental Sciences 2006年第1期18卷 193-200页

作者： Jae-Wook Lee Tae-Ouk Kwon Ramesh Thiruvenkatachari il-Shik moon Department of Chemistry Engineer Seonam University Namwon 590-711 Korea Department of Chemistry Engineer Sunchon National University Suncheon 540-742 Korea

This study evaluates the adsorption ability ofbisphenol A（BPA） on titanium dioxide（TiO2） and its effect on the photocatalysis by advanced oxidation process using UV radiation and TiO2 photocatalyst. Degradation of BPA was also evaluated for the system without adsorption prior to photocatalytic reaction. The separation of TiO2 from BPA solution treated by pilot-scale photocatalytic reactor （capacity 0.16 m^3） was studied using submerged ultrafiltration （UF） membrane. It was found that although adsorption capacity of BPA was not high, adsorption played an important role in improving the efficiency ofphotocatalysis. On the other hand, during the separation of TiO2 particles from aqueous suspension, the permeate flux of the membrane was strongly affected by transmembrane pressure and TiO2 dose. The permeate turbidity was decreased below 1 NTU.

关键词： bisphenol A TiO2 adsorption membrane photocatalysis

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Nitrile Electrolyte Strategy for 4.9 V-Class Lithium-Metal Batteries Operating in Flame

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Energy & Environmental Materials 2023年第3期6卷 229-237页

作者： Hyunseok moon Sung-ju Cho Dae-Eun Yu Sang-Young Lee Department of Chemical and Biomolecular Engineering Yonsei UniversitySeoul 03722Korea Molecular Foundry Lawrence Berkeley National LaboratoryBerkeley CA USA Batteries R&D Center LG Energy SolutionDaejeon 34122Korea

Challenges facing high-voltage/high-capacity cathodes,in addition to the longstanding problems pertinent to lithium(Li)-metal anodes,should be addressed to develop high-energy-density Li-metal *** issue mostly stems from interfacial instability between electrodes and *** carbonate-or ether-based liquid electrolytes suffer from not only volatility and flammability but also limited electrochemical stability ***,we report a nitrile electrolyte strategy based on concentrated nitrile electrolytes(CNEs)with *** CNE consists of high-concentration lithium bis(fluorosulfonyl)imide(LiFSI)in a solvent mixture of succinonitrile(SN)/acetonitrile(AN).The SN/AN solvent mixture is designed to ensure high oxidation stability along with thermal stability,which are prerequisites for high-voltage Li-metal *** CNE exhibits interfacial stability with Li metals due to the coordinated solvation *** nitrate(LiNO_(3))and indium fluoride(InF_(3))are incorporated in the CNE as synergistic co-additives to further stabilize solid-electrolyte interphase(SEI)on Li *** resulting electrolyte(CNE+LiNO_(3)/InF_(3))enables stable cycling performance in Li||LiNi_(0.8)Co_(0.1)Mn_(0.1)and 4.9 V-class Li||LiNi_(0.5)Mn_(1.5)O_(4)***,the Li||LiNi_(0.5)Mn_(1.5)O_(4)cell maintains its electrochemical activity at high temperature(100℃)and even in flame without fire or explosion.

关键词： 4.9 V-class cathodes electrolyte-electrode interfaces lithium-metal batteries nitrile electrolytes safety

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