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| 1 | A long-term Global LAnd Surface Satellite(GLASS)data-set for environmental studies显示文摘Recently,five Global LAnd Surface Satellite(GLASS)products have been released:leaf area index(LAI),shortwave broadband albedo,longwave broadband emissivity,incident short radiation,and photosynthetically active radiation(PAR).The first three products cover the years 19822012(LAI)and 19812010(albedo and emissivity)at 15 km and 8-day resolutions,and the last two radiation products span the period 20082010 at 5 km and 3-h resolutions.These products have been evaluated and validated,and the preliminary results indicate that they are of higher quality and accuracy than the existing products.In particular,the first three products have much longer time series,and are therefore highly suitable for various environmental studies.This paper outlines the algorithms,product characteristics,preliminary validation results,potential applications and some examples of initial analysis of these products. | Shunlin Liang Xiang Zhao Suhong Liu Wenping Yuan Xiao Cheng Zhiqiang Xiao Xiaotong Zhang Qiang Liu Jie Cheng Hairong Tang Yonghua Qu Yancheng Bo Ying Qu Huazhong Ren Kai Yu John Townshend | 2013 | International Journal of Digital Earth2013，6，S01： | 16 |
| 2 | A dual-pass data assimilation scheme for estimating surface fluxes with FY3A-VIRR land surface temperature显示文摘In this work, a dual-pass data assimilation scheme is developed to improve predictions of surface flux. Pass 1 of the dual-pass data assimilation scheme optimizes the model vegetation parameters at the weekly temporal scale, and Pass 2 optimizes the soil moisture at the daily temporal scale. Based on ensemble Kalman filter(EnKF), the land surface temperature(LST) data derived from the new generation of Chinese meteorology satellite(FY3A-VIRR) are assimilated into common land model(CoLM) for the first time. Six sites, Daman, Guantao, Arou, BJ, Miyun and Jiyuan, are selected for the data assimilation experiments and include different climatological conditions. The results are compared with those from a dataset generated by a multi-scale surface flux observation system that includes an automatic weather station(AWS), eddy covariance(EC) and large aperture scintillometer(LAS). The results indicate that the dual-pass data assimilation scheme is able to reduce model uncertainties and improve predictions of surface flux with the assimilation of FY3A-VIRR LST data. | XU TongRen LIU ShaoMin XU ZiWei LIANG ShunLin XU Lu | 2015 | Science China Earth Sciences2015，58，2： | 9 |
| 3 | Improvement of Dark Object Method in Atmospheric Correction of hyperspectral remotely sensed data显示文摘The existing methods in atmospheric correction of hyperspectral data usually focus on removing the effects of water vapor and other absorptive gases, while this paper mainly studies the method of re- moving the influence of the aerosol and the water vapor simultaneously. Because the hyperspectral data has a larger number of bands, the conventional dark object method cannot be applied to the at- mospheric correction of the hyperspectral data which can be improved, as described in this paper, by adequately making use of spectral characteristics of the hyperspectral data with an iterative correction during the whole process. The effects of the aerosol and water vapor are eliminated at the same time finally. The improved dark object method is used to do the atomospheric correction of the Hyperion data in Yanzhou, Shandong Province as an example. And the result indicates that it can correct the atmospheric influence of the hyperspectral data quickly and remarkably. | ZHAO Xiang LIANG ShunLin LIU SuHong WANG JinDi QIN Jun LI Qing LI XiaoWen | 2008 | Science China Earth Sciences2008，51，3： | 8 |
| 4 | Preliminary evaluation of the long-term GLASS albedo product显示文摘Land surface albedo is an important parameter to describe the radiant forcing in the climate system.A long-time series of global albedo products is needed to understand the mechanism of climate change.Aiming to support global change and Earth system studies,GLASS(Global LAnd Surface Satellites)provides long-term global land surface albedo product from 1981 to 2010,which are generated from multisource remote sensing data and newly developed algorithms.It is critical to assess the quality of the GLASS product when it is released to the public.This paper first introduced the algorithms and then analyzed the integrity,accuracy,and robustness of the GLASS albedo product.The results show that the GLASS albedo product is a gapless,long-term continuous,and self-consistent data-set with an accuracy similar to that of the widely acknowledged MODIS MCD43 product.The quality flag,which is provided along with the black-sky and white-sky albedo,gives a pertinent indication of the expected uncertainty in the product. | Qiang Liua Lizhao Wang Ying Qu Nanfeng Liu Suhong Liu Hairong Tang Shunlin Liang | 2013 | International Journal of Digital Earth2013，6，S01： | 7 |
| 5 | Remote sensing of earth’s energy budget:synthesis and review显示文摘The Earth’s climate is largely determined by its energy budget.Since the 1960s,satellite remote sensing has been used in estimating these energy budget components at both the top of the atmosphere(TOA)and the surface.Besides the broadband sensors that have been traditionally used for monitoring Earth’s Energy Budget(EEB),data from a variety of narrowband sensors aboard both polar-orbiting and geostationary satellites have also been extensively employed to estimate the EEB components.This paper provides a comprehensive review of the satellite missions,state-of-the art estimation algorithms and the satellite products,and also synthesizes current understanding of the EEB and spatiotemporal variations.The TOA components include total solar irradiance,reflected shortwave radiation/planetary albedo,outgoing longwave radiation,and energy imbalance.The surface components include incident solar radiation,shortwave albedo,shortwave net radiation,longwave downward and upwelling radiation,land and sea surface temperature,surface emissivity,all-wave net radiation,and sensible and latent heat fluxes.Some challenges,and outlook such as virtual constellation of different satellite sensors,temporal homogeneity tests of long time-series products,algorithms ensemble,and products intercomparison are also discussed. | Shunlin Liang Dongdong Wang Tao He Yunyue Yu | 2019 | International Journal of Digital Earth2019，12，7： | 5 |
| 6 | Winter wheat area estimation from MODIS-EVI time series data using the Crop Proportion Phenology Index显示文摘 | Yaozhong Pan Le Li Jinshui Zhang Shunlin Liang Xiufang Zhu Damien Sulla-Menashe | 2011 | Remote Sensing of Environment2011，，： | 2 |
| 7 | Narrowband to broadband conversions of land surface albedo I显示文摘 | Shunlin Liang | 2001 | Remote Sensing of Environment2001，，2： | 2 |
| 8 | Validation of MODIS and CYCLOPES LAI products using global field measurement data显示文摘 | Hongliang Fang Shanshan Wei Shunlin Liang | 2011 | Remote Sensing of Environment2011，，： | 2 |
| 9 | Atmospheric correction of landsat etm+landsurface imagery-part i:methods显示文摘 | Shunlin Liang Hongliang Fang Mingzhen Chen | 2001 | IEEE Transactions on Geoscience and Remote Sensing2001，39，11： | 1 |
| 10 | Atmospheric correction of landsat ETM+land surface imagery:II validation and applications显示文摘 | Shunlin Liang Hongliang Fang Jeffrey T Morisette | 2002 | IEEE Transactions on Geoscience and Remote Sensing2002，4，： | 1 |
| 11 | Estimation of gross primary production over the terrestrial ecosystems in China显示文摘 | Li Xianglan Liang Shunlin Yu Guirui | 2013 | Ecological Modelling2013，261，7： | 1 |
| 12 | Atmospheric correction of Landsat ETMA- land surface imagery-part I : validation and appiications 显示文摘 | Liang Shunlin Fang Hongliang Morisette J T | 2002 | IEEE Transaction on Geoscience and Remote Sensing2002，40，12： | 1 |
| 13 | Narrowband to Broadband Conversions of Land Surface Albedo,I Algorithms显示文摘 | | 2000 | Remote Sensing of Environment2000，76，： | 1 |
| 14 | Ecoenvironmental vulnerability evaluation in mountainous region using remote sensing and GIS-A case study in the upper reaches of Minjiang River,China显示文摘 | Li Ainong Wang Angsheng Liang Shunlin | 2006 | Ecological Modelling2006，192，： | 1 |
| 15 | Differential immune response of mallard duck peripheral blood mononuclear cells to two highly pathogenic avian influenza H5N1 viruses with distinct pathogenicity in mallard ducks显示文摘 | Zhu Cui Jiao Hu Liang He Qunhui Li Min Gu Xiaoquan Wang Shunlin Hu Huimou Liu Wenbo Liu Xiaowen Liu Xiufan Liu | 2014 | Archives of Virology2014，，2： | 1 |
| 16 | An Operational Atmospheric Correction Algorithm for Landsat Thematic Mapper Imagery over the Land显示文摘 | Shunlin Liang Hassan Fallah-Adl | | Journal of Geophysical Research0，102，17： | 1 |
| 17 | Fast Algorithms for Estimating Aerosol Optical Depth and Correcting Thematic Mapper Imagery显示文摘 | Hassan Fallah Adl Joseph Jaja Shunlin Liang | 1997 | The Journal of Supereomputing1997，10，： | 1 |
| 18 | Accuracy assessment of the MODIS 16-day albedo product for snow: comparisons with Greenland in situ measurements显示文摘 | Julienne Stroeve Jason E. Box Feng Gao Shunlin Liang Anne Nolin Crystal Schaaf | 2004 | Remote Sensing of Environment2004，，1： | 1 |
| 19 | 1997, Fast algorithms for estimating aerosol optical depth and correcting Thematic Mapper Imagery显示文摘 | FALLAH-ADL H JOSEPH JAJA LIANG SHUNLIN | 1997 | The Journal of Supercomputing1997，10，4： | 1 |
| 20 | Fractional vegetation cover estimation in heterogeneous areas by combining a radiative transfer model and a dynamic vegetation model显示文摘A fractional vegetation cover(FVC)estimation method incorporating a vegetation growth model and a radiative transfer model was previously developed,which was suitable for FVC estimation in homogeneous areas because the finer-resolution pixels corresponding to one coarseresolution FVC pixel were all assumed to have the same vegetation growth model.However,this assumption does not hold over heterogeneous areas,meaning that the method cannot be applied to large regions.Therefore,this study proposes a finer spatial resolution FVC estimation method applicable to heterogeneous areas using Landsat 8 Operational Land Imager reflectance data and Global LAnd Surface Satellite(GLASS)FVC product.The FVC product was first decomposed according to the normalized difference vegetation index from the Landsat 8 OLI data.Then,independent dynamic vegetation models were built for each finer-resolution pixel.Finally,the dynamic vegetation model and a radiative transfer model were combined to estimate FVC at the Landsat 8 scale.Validation results indicated that the proposed method(R^(2)=0.7757,RMSE=0.0881)performed better than either the previous method(R^(2)=0.7038,RMSE=0.1125)or a commonly used method involving look-up table inversions of the PROSAIL model(R^(2)=0.7457,RMSE=0.1249). | Yixuan Tu Kun Jia Shunlin Liang Xiangqin Wei Yunjun Yao Xiaotong Zhang | 2020 | International Journal of Digital Earth2020，13，4： | 1 |
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