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Impacts of the annual cycle of background SST in the tropical Pacific on the phase and amplitude of ENSO

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Atmospheric and Oceanic Science Letters 2025年第1期18卷 12-17页

作者： Song Jiang Congwen Zhu Ning Jiang State Key Laboratory of Severe Weather(LASW) Chinese Academy of Meteorological SciencesBeijingChina College of earth and Planetary Sciences University of Chinese Academy of SciencesBeijingChina

The dominant annual cycle of sea surface temperature(SST)in the tropical Pacific exhibits an antisymmetric mode,which explains 83.4%total variance,and serves as a background of El Niño-Southern Oscillation(ENSO).However,there is no consensus yet on its anomalous impacts on the phase and amplitude of *** on data during 1982-2022,results show that anomalies of the antisymmetric mode can affect the evolution of ENSO on the interannual scale via Bjerknes feedback,in which the positive(negative)phase of the antisymmetric mode can strengthen El Niño(La Niña)in boreal winter via an earlier(delayed)seasonal cycle transition and larger(smaller)annual *** magnitude of the SST anomalies in the equatorial eastern Pacific can reach more than±0.3◦C,regulated by the changes in the antisymmetric mode based on random sensitivity *** reveal the spatial pattern of the annual cycle associated with the seasonal phase-locking of ENSO evolution and provide new insight into the impact of the annual cycle of background SST on ENSO,which possibly carries important implications for forecasting ENSO.

关键词： Annual cycle SST anomaly Antisymmetric mode ENSO

earth observation satellite data receiving, processing system and data sharing

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International Journal of Digital earth 2012年第3期5卷 241-250页

作者： Huadong Guo Jianbo Liu An Li Jianguo Zhang Center for earth Observation and Digital earth Chinese Academy of SciencesBeijingChina

The China Remote Sensing Satellite Ground Station was established in *** currently has three receiving stations in the north,west,and south of China,with the capacity to receive data from 15 international and domestic earth observation satellites covering the entire Chinese territory and 70%of ***,a systematic,integrated,and standardized spatial information service system has been built.A data-sharing project for medium-resolution earth observation satellites has been conducted and plays an important role in land,ocean,and atmospheric resource investigation and environmental monitoring.

关键词： earth observation data receiving data sharing remote sensing applications

A new species of smooth skink (Squamata： Scincidae： Scincella) from Cambodia

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Zoological Research 2018年第3期39卷 220-240页

作者： Thy Neang Somaly Chan Nikolay A. Poyarkov, Jr. wild earth allies Sk. Phnom Penh Thmei Kh. Sen Sok Phnom Penh Cambodia Ministry of Environment Sk. Tonle Bassac Kh. Chamkarmorn Phnom Penh Cambodia Department of Vertebrate Zoology Biological Faculty Lomonosov Moscow State University Moscow 119234 Russia Joint Russian-Vietnamese Tropical Research and Technological Centre Nghia Do Cau Giay Hanoi Vietnam

Based on morphological and genetic evidence we evaluated the taxonomic status of a newly discovered forest-dwelling population of skink （genus Scincella） from the Keo Selma wildlife Sanctuary, Mondulkiri Province, Cambodia. From phylogenetic analysis of a 668-bp fragment of the mtDNA COl and diagnostic morphological characters we allocate the newly discovered population to the Scincella reevesii-S. rufocaudata species complex and describe it as Scincella nigrofasciata sp. nov. The new skink species can be distinguished from all other Southeast Asian congeners by the following combination of morphological characters： snout-vent length （SVL） 40.0-52.6 mm; relative tail length （TaL/SVL ratio） 1.25-1.94; prefrontals in broad contact; infralabials 6; primary temporals 2; relative forelimb length （FIL/SVL ratio） 0.20-0.22; relative hindlimb length （HIL/SVL ratio） 0.30-0.33; relative forearm length （FoL/SVL ratio） 0.14-0.16; adpressed forelimbs and hind limbs either overlapping （0.4-2.2 mm） or separated （1.9-2.3 mm）; midbody scale rows 32-33, paravertebral scales 69-74, vertebral scales 65-69; dorsal scales between dorsolateral stripes 8; comparatively slender fingers and toes, subdigital lamellae under fourth toe 15-17; dark discontinuous regular dorsal stripes 5-7; distinct black dorsolateral stripes, narrowing to lateral sides and extending to 52%-86% of total tail length. We provide additional information on the holotype of Scincella rufocaudata （Darevsky ＆ Nguyen, 1983）, and provide evidence for the species status of Scincella rupicola. Our discovery brings the number of Scincellaspecies in Cambodia to five and emphasizes the incompleteness of knowledge on the herpetofaunal diversity of this country.

关键词： Mondulkiri Keo Seima wildlifeSanctuary Taxonomy mtDNA COl DNA barcoding Phylogenetics

Understanding global natural disasters and the role of earth observation

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International Journal of Digital earth 2010年第3期3卷 221-230页

作者： Huadong Guo Center for earth Observation and Digital earth Chinese Academy of SciencesBeijing 100190China

Since earthquakes,tropical storms,and floods are the three main global natural disasters causing the biggest loss,they should be the main focus of research in disaster science and disaster mitigation and *** paper discusses the characteristics of these three global natural disasters from a scientific point of view,and analyses their patterns of distribution,origin and result,as well as the extent of their damage and measures of disaster mitigation and *** paper,at the technical level,introduces the role of earth observation(EO)technologies in disaster mitigation,and real and quasi-real-time monitoring and assessment using advanced optical and microwaveEOcapacities,while digital earth technologies provide avery important role in rapidly acquiring spatial information of the disaster *** paper concludes by discussing the relationship between man and natural disasters,and proposes the viewpoint that man and nature should be able to harmoniously coexist,and the importance of understanding disasters from an earth system science perspective so as to better meet the challenges of natural disasters.

关键词： natural disaster earth observation digital earth

A digital earth prototype system:DEPS/CAS

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International Journal of Digital earth 2009年第1期2卷 3-15页

作者： H.Guo X.Fan C.Wang Key Laboratory of Digital earth Science Center for Earth Observation and Digital EarthChinese Academy of SciencesBeijing 100190China

Digital earth is an information expression of the real earth,and is a new way of understanding the earth in the twenty-first *** paper introduces a Digital earth Prototype System(DEPS)developed at the Chinese Academy of Sciences(CAS)and supported by the Knowledge Innovation Program of the Chinese Academy of *** are made to the theoretical model and technical framework of the Digital earth,and its related key technologies on spatial information processing,spatial data warehouse technology,virtual reality technology,high-performance and parallel *** DEPS consists of seven sub-systems including the spatial data,metadata,model database,Grid geoscience computing,spatial information database,maps service and virtual ***,we developed a series of application systems such as the environment monitoring for the Olympic Games 2008 in Beijing,natural disasters evaluation,digital city,digital archeology,Asia regional aerosol and climate *** DEPS/CAS displayed the application ability and potential of the Digital earth in three levels:the global,national and regional.

关键词： Digital earth prototype system grid information service virtual reality map services information application

EDITORIAL China’s earth observing satellites for building a Digital earth

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International Journal of Digital earth 2012年第3期5卷 185-188页

作者： Huadong Guo Center for earth Observation and Digital earth Chinese Academy of Sciences

Digital earth is the inevitable outcome of the space era and evolutionary development of the information society,characterized by global coverage by earth observing ***,the earth observing satellite is a key technology for building a Digital *** has placed great importance on the development of earth observing *** four satellite series in China,which include resource satellites,environment satellites,meteorological satellites and ocean satellites,have been developed within the past few *** main characteristics of these satellite series are summarized in Table 1.

关键词： satellites earth meteorological

Rare earth element geochemistry of groundwaters from coal bearing aquifer in Renlou coal mine,northern Anhui Province,China

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Journal of Rare earths 2011年第2期29卷 185-192页

作者：孙林华桂和荣陈松 School of earth Sciences and Engineering Suzhou University

Rare earth element （REE） concentrations of two different types of groundwaters （high SO42–water-SW and high alkaline waterCW） from coal bearing aquifer （–400~–280 m） in Renlou coal mine,northern Anhui Province,China were *** results indicated that they had different REE characteristics： the total concentrations of REEs （ΣREE） of SW were lower than those of CW in general although they all had heavy REEs enriched relative to light *** dissolved REE inorganic species of SW included Ln3＋,LnCO3＋,LnSO4＋,Ln（CO3）2– and Ln（SO4）2–,whereas the CW are Ln（CO3）2– and LnCO3＋ dominant,and the proportions of Ln（CO3）2– increased while other species decreased with pH *** with correlation analysis,the enrichment and fractionation of SW （low alkaline water） were considered to be affected by alkaline concentrations via affecting the types and proportions of REE inorganic ***,the effect of alkaline concentrations to the enrichment and fractionation of REEs of CW （high alkaline water） was less important than total dissolved solids and pH,which reflected the contribution from different rocks they flowed over,different degrees of water-rock interactions and/or REE solid-liquid partition coefficients.

关键词： rare earth elements inorganic speciation enrichment and fractionation coal bearing aquifer groundwater

Preparing Process of Cerium Acetate and Rare earth Acetate

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Journal of Rare earths 2004年第Z1期22卷 26-31页

作者： Qiao Jun Ma Ying Xu Yanhui Zhang Jun Chang Shu Hao Xianku Baotou Research Institute of Rare earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China Baotou Research Institute of Rare Earth Baotou 014010 China

Preparing process was presented and the influences of concentration of acetic acid, reaction temperature, the ratio of cerium carbonate and acetic acid, heat preservation time to the yield of cerium acetate were *** crystalline cerium acetate and rare earth acetate such as ( La, Ce, Pr, Nd) (Ac) 3, ( Ce, Pr, Nd) (Ac) 3, ( Pr, Nd, Er,Y) (Ac) 3 and yttrium acetate were prepared under this *** shape, structure and composition of the crystals were determined by the methods of SEM, TG-DTA, X-ray diffraction and chemical *** optimum prepared conditions of cerium acetate were *** prepared process has characteristics such as simple process route, low cost, high yield, good quality, no pollution to environment, etc.

关键词： cerium acetate, rare earth acetate, composition rare earths

Observational evidences of wave excitation and inverse cascade in a distant earth foreshock region

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Science China earth Sciences 2019年第4期62卷 619-630页

作者： Jiansen HE Die DUAN Xingyu ZHU Limei YAN Linghua WANG School of earth and Space Sciences Peking University Key Laboratory of earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences

The foreshock with nascent plasma turbulence is regarded as a fascinating region to understand basic plasma physical processes, e.g., wave-particle interactions as well as wave-wave couplings. Although there have been plenty of intensive studies on this topic, some key clues about the physical processes still lack observations. A relatively comprehensive case study with some new observations is presented in this work based on the WIND spacecraft observations. In this case, upstream energetic protons were drifting at tens of Alfvén speed with respect to the background plasma protons. When looking at the magnetic wave activities, we find the co-existence of high-frequency(0.1-0.5 Hz) large-amplitude right-hand polarized(RHP) waves and lowfrequency(0.02-0.1 Hz) small-amplitude left-hand polarized(LHP) waves in the spacecraft(SC) frame. The observed anticorrelation between magnetic and velocity fluctuations along with the sunward magnetic field direction indicates that the lowfrequency LHP waves in the SC frame are in fact the sunward upstream RHP Alfvénic waves in the solar wind frame. This new observation corroborates the applicability of theories about plasma non-resonance instability and inverse cascade to the foreshock region, where the downstream high-frequency RHP parent waves are excited by the upstream energetic protons through non-resonance instability and the low-frequency RHP daughter waves are generated by the parent waves due to nonlinear parametric instability. Furthermore, enhanced downstream energetic proton fluxes are inferred to result from scattering of the upstream protons by the nascent turbulent fluctuations. Therefore, some critical clues about the newborn turbulence in the foreshock are provided in this work.

关键词： Solar wind Foreshock Wave-particle interaction Parametric instability