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1Changes in air temperature over China in response to the recent global warming hiatus显示文摘The 1998-2012 global wanning hiatus has aroused great public interest over the past several years.Based on the air temperature measurements from 622 meteorological stations in China,the temperature response to the global warming hiatus was analyzed at national and regional scales.We found that air temperature changed-0.221°C/10a during 1998-2012,which was lower than the long-term trend for 1960-1998 by 0.427°C/10a.Therefore,the warming hiatus in China was more pronounced than the global mean.Winter played a domi nant role in the nati on wide warming hiatus,con tributi ng 74.13%,while summer contributed the least among the four seasons.Furthermore,the warming hiatus was spatial heterogeneous across different climate conditions in China.Comparing the three geographic zones,the monsoon region of eastern China,arid region of northwestern China,and high frigid region of the Tibetan Plateau,there was significant cooling in eastern and northwestern China.In eastern China,which contributed 53.79%,the trend magnitudes were 0.896°C/10a in winter and 0.134°C/10a in summer.In the Tibeta n Plateau,air temperature in creased by 0.204°C/10a,indicating a lack of a significant warming hiatus.More broadly,the warming hiatus in China may have been associated with the negative phase of PDO and reduction in sunspot numbers and total solar radiation.Finally,although a warming hiatus occurred in China from 1998 to 2012,air temperature rapidly increased after 2012 and will likely to continuously warm in the next few years.DU Qinqin ZHANG Mingjun WANG Shengjie CHE Cunwei MA Rong MA Zhuanzhuan 2019Journal of Geographical Sciences2019,29,4:9
2Multi-Component and Multi-Point Trace Gas Sensing in Wavelength Modulation Spectroscopy Based on Wavelength Stabilization显示文摘Multi-component and multi-point trace gas sensing in the wavelength modulation spectroscopy is demonstrated based on the frequency-division multiplexing and time-division multiplexing technology.A reference photodetector is connected in series with a reference gas cell with the constant concentration to measure the second-harmonics peak of the components for wavelength stabilization in real time.The central wavelengths of the distributed feedback lasers are locked to the target gas absorption centers by the reference second-harmonics signal using a digital proportional-integral-derivative controller.The distributed feedback lasers with different wavelengths and modulation frequencies are injected into the gas cell to achieve multi-components gas measurement by the frequency-division multiplexing technology.In addition,multi-point trace gas sensing is achieved by the time-division multiplexing technology using a photoswitch and a relay unit.We use this scheme to detect methane(CH4)at 1650.9 nm and water vapor(H2O)at 1368.597 nm as a proof of principle with the gas cell path length of 10 cm.The minimum detection limits achieved for H2O and CH4 are 1.13 ppm and 11.85 ppm respectively,with three-point gas cell measurement;thus 10.5-fold and 10.1-fold improvements are achieved in comparison with the traditional wavelength modulation spectroscopy.Meanwhile,their excellent R-square values reach 0.9983 and 0.99564 for the concentration ranges of 500 ppm to 2000 ppm and 800 ppm to 2700 ppm,respectively.Zongliang WANG Jun CHANG Huishan YU Cunwei TIAN Hao ZHANG Xiukun ZHANG Longfei TANG Qinduan ZHANG Yiwen FENG 2019Photonic Sensors2019,9,4:2
3Gas Absorption Center-Based Wavelength Calibration Technique in QEPAS System for SNR Improvement显示文摘Zongliang WANG Jun CHANG Qi LIU Cunwei TIAN Qinduan ZHANG 2018Photonic Sensors2018,8,4:1
4In vitro interaetiorns of micafungin with amphotericin B,itraconazole or fluconazole against the pathogenic Phase of penicillium marneffei显示文摘Cunwei Cao Wei Liu Ruoyu Li 2009Journal of Antimicrobial chemotherapy2009,63,:1
5The effects of temperature, pH, and salinity on the growth and dimorphism of Penicillium marneffei 显示文摘Cunwei CAO Ruoyu LI Zhe WAN 2007Med Myco12007,45,5:1
6Study of the interaction between mercury (II) and bovine serum albumin by spectroscopic methods显示文摘Dai Chunmei Ji Cunwei Lan Huixiang Song Yuze Yang Wei Zheng Dan 2014Environmental Toxicology and Pharmacology2014,,2:1
7Trisguanidinate lanthanide complexes: syntheses, structures, and catalytic activity for mild amidation of aldehydes with amines 显示文摘Cunwei Qian Xingmin Zhang Junmei Li 2009OrgaTW1IU!taUics2009,28,:1
8Common Reservoirs for Penicillium marneffei Infection in Humans and Rodents,China显示文摘Cunwei Cao Ling Liang Wenjuan Wang 0,,02:1
9A new approach to stability analysis of discrete-time recurrent neural networks with time-varying delay显示文摘SONG Cunwei GAO Huijun ZHENG Weixing 0,,:1
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