|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Indications of stratospheric anomalies in the freezing rain and snow disaster in South China,2008显示文摘NCEP/NCAR reanalysis data were used to characterize stratospheric temperature and water-vapor anomalies before and after the freezing rain and snow disaster of South China in 2008,and the influence of stratospheric circulation anomalies on the troposphere.Stratospheric temperature and water-vapor anomalies provided good leading indicators of this weather event.The period from December 1st 2007 to February 28th 2008 was divided into 18 pentads.During the 6th pentad,temperature decreased significantly at 10 hPa in the near-polar stratospheric region,and the decreasing trend strengthened and extended downward and southward to middle and lower latitudes.During the 14th-18th pentads,the temperature decrease reached its maximum and extended to 30°N.This coincided with the widespread freezing rain and snow event.By the end of January 2008,the temperature decrease ended in the near-polar stratospheric region,but continued in the mid-latitude area of the troposphere as the freezing rain and snow weather persisted.Similar to the temperature variations,positive anomalies of relative humidity in the stratospheric near-polar region also strengthened and extended downward and southward,coinciding with the freezing rain and snow event.Along with the significant relationship between the freezing rain and snow disaster and stratospheric circulation anomalies,the stratospheric polar vortex changed its shape in late December,intensifying and spreading downward from the top of the stratosphere and southward to the Asian continent,resulting in a deepening of the East Asian Trough and a strengthening of meridional circulation.Before the occurrence of the freezing rain and snow event,temperature and vapor increases in the stratosphere transferred downward to the troposphere,along with a stratospheric flow in the near-polar region southward to lower latitudes. | CHEN QuanLiang LI Zhan FAN GuangZhou ZHU KeYun ZHANG Wen ZHU HongQin | 2011 | Science China Earth Sciences2011，54，8： | 5 |
| 2 | 中国西南地区不同海拔高度在1961–2014年间极端高温趋势变化显示文摘本研究根据中国气象局最近发布的中国高分辨率气象站的日最高气温和平均气温观测数据,分析了中国西南地区在1961–2014年间极端高温的趋势。中国西南不同海拔地区的极端高温趋势在近50年间(1961–2014)呈现出阶段性变化。平均温度和最高温度的变化趋势也表现出相对应的变化。这些与温度有关的变量在1975–94年期间均缓慢增加,而在最近的1995–2014年期间则急剧增加,增幅约为1975–94年的2–10倍。这种加速的增加主要发生在中、高海拔地区,并且最高温度比平均温度上升得快得多。而这一时期正是众所周知的全球变暖间歇期。这一结果表明,我国内陆高海拔区域的气温变化趋势可能与全球平均气温变化有明显差异。 | XUE Yuting CHEN Quanliang ZHANG Jiayu HUANG Ping | 2020 | Atmospheric and Oceanic Science Letters2020，13，5： | 2 |
| 3 | Spatial and temporal distribution of the cloud optical depth over China based on MODIS satellite data during 2003–2016显示文摘The cloud optical depth(COD) is one of the important parameters used to characterize atmospheric clouds. We analyzed the seasonal variations in the COD over East Asia in 2011 using cloud mode data from the AERONET(Aerosol Robotic Network) ground-based observational network. The applicability of the MODIS(Moderate Resolution Imaging Spectroradiometer) COD product was verified and compared with the AERONET cloud mode dataset. There was a good correlation between the AERONET and the MODIS. The spatial and temporal distribution and trends in the COD over China were then analyzed using MODIS satellite data from 2003 to 2016. The seasonal changes in the AERONET data and the time sequence variation of the satellite data suggest that the seasonal variations in the COD are significant. The result shows that the COD first decreases and then increases with the season in northern China, and reaches the maximum in summer and minimum in winter.However, the spatial distribution change is just the opposite in southern China. The spatial variation trend shows the COD in China decreases first with time and gradually increases after 2014. And the trend of COD in the western and central China is consistent with that in China. While the trend of COD shows a continuously increasing over time in northeast China and the Pearl River Delta. | Xiaopan Li Huizheng Che Hong Wang Xiang'ao Xia Quanliang Chen Ke Gui Hujia Zhao Linchang An Yu Zheng Tianze Sun Zhizhong Sheng Chao Liu Xiaoye Zhang | 2019 | Journal of Environmental Sciences2019，31，6： | 1 |
| 4 | The increasing predominance of extreme precipitation in Southwest China since the late 1970s显示文摘本文分析了中国西南20世纪70年代末以来极端降水事件的频率,强度及其对总降水的贡献.结果表明,该地区约60%的降水站点极端降水的频率和强度正在增加,而大多数站点总降水频率明显减少.同时极端降水总量对总降水量的贡献有显著增加的趋势,极端降水在日益干旱的中国西南地区变得更具主导性.研究结果提醒应更加重视极端降水及其可能引发的次生灾害,如洪水,山体滑坡等. | Guowei Zheng Yang Li Quanliang Chen Xin Zhou Guolu Gao Minggang Li Ting Duan | 2022 | Atmospheric and Oceanic Science Letters2022，15，5： | 1 |
| 5 | Main Detrainment Height of Deep Convection Systems over the Tibetan Plateau and Its Southern Slope显示文摘Deep convection systems (DCSs) can rapidly lift water vapor and other pollutants from the lower troposphere to the upper troposphere and lower stratosphere. The main detrainment height determines the level to which the air parcel is lifted. We analyzed the main detrainment height over the Tibetan Plateau and its southern slope based on the CloudSat Cloud Profiling Radar 2B_GEOPROF dataset and the Aura Microwave Limb Sounder Level 2 cloud ice product onboard the Atrain constellation of Earth-observing satellites. It was found that the DCSs over the Tibetan Plateau and its southern slope have a higher main detrainment height (about 10-16 km) than other regions in the same latitude. The mean main detrainment heights are 12.9 and 13.3 km over the Tibetan Plateau and its southern slope, respectively. The cloud ice water path decreases by 16.8% after excluding the influences of DCSs, and the height with the maximum increase in cloud ice water content is located at 178 hPa (about 13 km). The main detrainment height and outflow horizontal range are higher and larger over the central and eastern Tibetan Plateau, the west of the southern slope, and the southeastern edge of the Tibetan Plateau than that over the northwestern Tibetan Plateau. The main detrainment height and outflow horizontal range are lower and broader at nighttime than during daytime. | Quanliang CHEN Guolu GAO Yang LI Hongke CAI Xin ZHOU Zhenglin WANG | 2019 | Advances in Atmospheric Sciences2019，36，10： | 1 |
| 6 | The first two leading modes of the tropical Pacific and their linkage without global warming显示文摘A discrepancy remains in the first two leading empirical orthogonal function(EOF) modes of the tropical Pacific sea surface temperature anomaly(SSTA) based on observations since the 1980s. The EOF1 mode, representing the El Ni?o-Southern Oscillation(ENSO), is a robust result. However, the EOF2 features either El Ni?o Modoki(EM) or ENSO evolution during different periods, which is probably associated with the impacts of global warming. The underlying question is what the EOF2 mode of the tropical Pacific would be without global warming. Using the CMIP5 preindustrial scenario to exclude the influence of global warming, we find that the EOF1 mode of the tropical Pacific SSTA represents ENSO and that the EOF2 mode is not EM. According to the lead–lag correlation between the ENSO and EOF2 modes, the linkage between these two modes is as follows: …El Ni?o → EOF2 → La Ni?a →–EOF2 → El Ni?o…. By analyzing the evolution of sea surface temperature, surface wind, and subsurface ocean temperature anomalies, we find the mechanism linking the ENSO and EOF2 modes is the air–sea interaction associated with the ENSO cycle. This result suggests that the EOF2 mode represents an aspect of ENSO evolution under preindustrial conditions. Therefore, this study further indicates that the EM is probably due to the influence of global warming. | Yang Li QuanLiang Chen XiaoRan Liu Nan Xing ZhiGang Cheng HongKe Cai Xin Zhou Dong Chen XiaoFei Wu MingGang Li | 2019 | Earth and Planetary Physics2019，3，2： | 1 |
| 7 | Analysis of the variations in the strength and position of stratospheric sudden warming in the past three decades显示文摘利用ERA-Interim再分析资料统计分析了1920–2016年期间北半球33次强平流层爆发性增温(SSW)事件和22次弱增温事件的强度和位置变化特征。发现SSW主要发生在二月,其纬向平均温度的最大经向梯度变化在1979–8319年和1998–2011年呈上升趋势,1984–1997年和2012–2016年呈下降趋势,但是整体呈现略微下降的线性趋势,并且强SSW事件的强度和持续时间的变化特征相似。一些SSW事件几乎同时在100 hPa到10 hPa上出现,一些SSW事件却首先出现在10 hPa上再向低层下传。另外,我们还发现这55个SSW事件的最大增温中心主要位于欧亚大陆30°E到120°E之间,这或许跟过去三十年中欧亚大陆的极涡转移有关。 | ZHANG Ludan CHEN Quanliang | 2019 | Atmospheric and Oceanic Science Letters2019，12，3： | 1 |
| 8 | A possible bias of simulating the post-2000 changing ENSO显示文摘Since the late 1990 s, a climate shift has occurred over the tropical Pacific that is characterized with a La Nin? a-like mean state. Coincident with this climate shift, climate models' skills in predicting the El Nin? o Southern Oscillation(ENSO) events in the 2000 s are significantly lower than in the 1980s–1990s. A common bias is likely to exist in contemporary ENSO models that got amplified after the climate shift. In this study, we identify this model bias to be the wind–sea surface temperature coupling processes over the tropical Pacific. Evidence is presented to show that this coupling process experienced an obvious shift around year 2000 in its coupling strength and coupling center. A simple ENSO coupled model is used to demonstrate that the changing properties of the post-2000 ENSO events can be more realistically simulated if this model bias is alleviated. | Fei Zheng Wen Zhang Jinyi Yu Quanliang Chen | 2015 | Science Bulletin2015，60，21： | 1 |
| 9 | Development of an integrating sphere calibration method for Cimel sunphotometers in China aerosol remote sensing network显示文摘Based on the integrating sphere traced from the National Institute of Standards and Technology(NIST,USA), a sphere calibration method and protocol for the China aerosol remote sensing network(CARSNET)Cimel sun photometer was established. Four CE318 sun photometers were verified using the proposed calibration method and operational protocol. The calibration results showed that the instrument coefficients differed by less than 3% for visible(~5% for infrared) wavelengths from the original ones stated by Cimel Electronique. In situ validation experiment data showed that radiances at ±6° measured by sun collimator(aureole) were consistent with those measured by sky collimator(sky), under both almucantar(ALMUC)^nd principal plane(PPLAN) scenarios. Differences at all wavelengths were less than 1%, indicating that the method and protocol are suitable for CARSNET field sun photometer calibration, and would benefit improvement of data quality and accuracy of network observations. | Ran Tao Huizheng Che Quanliang Chen Yaqiang Wang Junying Sun Xiaochun Zhang Sai Lu Jianping Guo Hong Wang Xiaoye Zhang | 2014 | Particuology2014，12，2： | 1 |
| 10 | Optical Properties of Cirrus Transition Zones over China Detected by CALIOP显示文摘A transition zone near cirrus lateral boundaries can be detected by CALIOP(cloud–aerosol lidar with orthogonal polarization). In the present study, for such transition zones over China, a number of optical properties, such as the backscatter coefficient and depolarization ratio, showed transitional characteristics between cirrus and clear sky. The stepped horizontal profile showed sharp changes in particle number and morphology between cirrus clouds and clear sky. The color ratio, however, was unable to show cirrus transition features because of the low signal-to-noise ratio.Typical ice particles presented a color ratio of 0.55–1.25 and a depolarization ratio of greater than 0.12, which were significantly higher than those of clear sky. Therefore, optical properties in transition took the form of stepwise horizontal profiles. The proportion of typical-featured particles also demonstrated a stepped horizontal profile similar to the optical characteristics, but the relationship between the proportion and the optical characteristics was not uniform in the cirrus clouds, transition zone, and clear sky. Therefore, the optical changes in the transition zone were caused by not only the change in particle concentration, but also the change in the particles themselves. The probability density distribution of the transition-zone widths showed a positive skewness distribution, and transition zones with widths of 3–5 km occurred most frequently. Overall, transition-zone width decreased with increasing temperature and increased with increasing vertical and horizontal wind speeds. This trend demonstrated independence with the direction of the vertical and horizontal winds. These observations implied that the transitional features were caused by material exchange, such as entrainment and turbulent transport, near the cirrus lateral boundaries, and by the phase transformation of particles, such as sublimation. | Hongke CAI Yunfei FU Quanliang CHEN Xiao FENG Xin TIE Ranting TAO Kepiao XU | 2017 | Journal of Meteorological Research2017，31，3： | 0 |
| 11 | Seasonal evolution of the effects of the El Nino–Southern Oscillation on lower stratospheric water vapor:Delayed effects in late winter and early spring显示文摘Water vapor in the stratosphere makes a significant contribution to global climate change by altering the radiative energy budget of the Earth’s climate system.Although many previous studies have shown that the El Ni?o–Southern Oscillation(ENSO)has significant effects on the water vapor content of the stratosphere in terms of the annual or seasonal mean,a comprehensive analysis of the seasonal evolution of these effects is still required.Using reanalysis data and satellite observations,we carried out a composite analysis of the seasonal evolution of stratospheric water vapor during El Ni?o/La Ni?a peaks in winter and decays in spring.The ENSO has a distinct hysteresis effect on water vapor in the tropical lower stratosphere.The El Ni?o/La Ni?a events moisten/dry out the tropical lower stratosphere in both winter and spring,whereas this wetting/dehydration effect is more significant in spring.This pattern is due to a warmer temperature in the upper troposphere and lower stratosphere during the El Ni?o spring phase,which causes more water vapor to enter the stratosphere,and vice versa for La Ni?a.This delayed warming/cooling in the lower stratosphere during the El Ni?o/La Ni?a decay in spring leads to the seasonal evolution of ENSO effects on water vapor in the lower stratosphere. | YuJing Liao QuanLiang Chen Xin Zhou | 2019 | Earth and Planetary Physics2019，3，6： | 0 |
| 12 | The tropical Pacific cold tongue mode and its associated main ocean dynamical process in CMIP5 models显示文摘The cold tongue mode(CTM),which represents the out-of-phase relationship in sea surface temperature anomaly(SSTA)variability between the Pacific cold tongue region and elsewhere in the tropical Pacific,shows a long-term cooling trend in the eastern equatorial Pacific.In this study,we investigate how well the CTM is reproduced in historical simulations generated by the 20 models considered in Phase 5 of the Coupled Model Intercomparison Project(CMIP5).Qualitatively,all 20 models roughly capture the cooling SSTA associated with the CTM.However,a quantitative assessment(i.e.,Taylor diagrams and the ratio of the trend between the simulations and observations)shows that only five of these 20 models(i.e.,CESM1-CAM5,CMCC-CM,FGOALS-g2,IPSL-CM5B-LR,and NorESM1-M)can reproduce with useful accuracy the spatial pattern and long-term trend of the CTM.We find that these five models generally simulate the main ocean dynamical process associated with the CTM.That is,these models adequately capture the long-term cooling trend in the vertical advection of the anomalous temperature by the mean upwelling.We conclude that the performance of these CMIP5 models,with respect to simulations of the long-term cooling trend associated with the vertical advection,and the related long-term decreasing trend of the vertical gradient of the oceanic temperature anomaly,can play an important role in successful reproduction of the CTM. | Yang Li QuanLiang Chen JianPing Li WenJun Zhang MinHong Song Wei Hua HongKe Cai XiaoFei Wu | 2019 | Earth and Planetary Physics2019，3，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员