Neural Network Emulation of Synthetic Hyperspectral Sentinel-2-like Imagery with Uncertainty [0.03%]
合成高光谱Sentinel-2类似影像及不确定性的神经网络仿真
Miguel Morata,Bastian Siegmann,Adrián Pérez-Suay et al.
Miguel Morata et al.
Hyperspectral satellite imagery provides highly-resolved spectral information for large areas and can provide vital information. However, only a few imaging spectrometer missions are currently in operation. Aiming to generate synthetic sate...
Emulation as an Accurate Alternative to Interpolation in Sampling Radiative Transfer Codes [0.03%]
仿真作为采样辐射传输代码中插值的精确替代方案
Jorge Vicent,Jochem Verrelst,Juan Pablo Rivera-Caicedo et al.
Jorge Vicent et al.
Computationally expensive radiative transfer models (RTMs) are widely used to realistically reproduce the light interaction with the earth surface and atmosphere. Because these models take long processing time, the common practice is to fir...
Prediction of Active Microwave Backscatter Over Snow-Covered Terrain Across Western Colorado Using a Land Surface Model and Support Vector Machine Regression [0.03%]
基于地表模型和支撐向量回歸的積雪地 microwave 后向散射预测研究（科罗拉多西部）
Jongmin Park,Barton A Forman,Hans Lievens
Jongmin Park
The main objective of this article is to develop a physically constrained support vector machine (SVM) to predict C-band backscatter over snow-covered terrain as a function of geophysical inputs that reasonably represent the relevant charac...
Error Propagation in Microwave Soil Moisture and Vegetation Optical Depth Retrievals [0.03%]
微波土壤湿度和植被光学厚度反演中的误差传播
Andrew F Feldman,David Chaparro,Dara Entekhabi
Andrew F Feldman
Satellite soil moisture and vegetation optical depth [(VOD); related to the total vegetation water mass per unit area] are increasingly being used to study water relations in the soil-plant continuum across the globe. However, soil moisture...
Assimilation of SMAP Brightness Temperature Observations in the GEOS Land-Atmosphere Data Assimilation System [0.03%]
在GEOS陆地-大气数据同化系统中SMAP亮温观测量同化研究
Rolf H Reichle,Sara Q Zhang,Qing Liu et al.
Rolf H Reichle et al.
Errors in soil moisture adversely impact the modeling of land-atmosphere water and energy fluxes and, consequently, near-surface atmospheric conditions in atmospheric data assimilation systems (ADAS). To mitigate such errors, a land surface...
Quantifying Spatiotemporal Changes in Human Activities Induced by COVID-19 Pandemic Using Daily Nighttime Light Data [0.03%]
利用夜间灯光数据量化由COVID-19大流行引起的人类活动时空变化
Ting Lan,Guofan Shao,Lina Tang et al.
Ting Lan et al.
The COVID-19 pandemic caused drastic changes in human activities and nighttime light (NTL) at various scales, providing a unique opportunity for exploring the pattern of the extreme responses of human community. This study used daily NTL da...
Monitoring Crop Growth During the Period of the Rapid Spread of COVID-19 in China by Remote Sensing [0.03%]
利用遥感监测新冠肺炎在中国迅速蔓延期间的作物生长情况
Yan Wang,Dailiang Peng,Le Yu et al.
Yan Wang et al.
The status of crop growth under the influence of COVID-19 is an important information for evaluating the current food security in China. This article used the cloud computing platform of Google Earth Engine, to access and analyze Sentinel-2...
Anthony W Yu,Elisavet Troupaki,Steven X Li et al.
Anthony W Yu et al.
At NASA Goddard Space Flight Center, we have been developing spaceborne lidar instruments for space sciences. We have successfully flown several missions in the past based on mature diode pumped solid-state laser transmitters. In recent yea...
Satellite Flood Inundation Assessment and Forecast Using SMAP and Landsat [0.03%]
基于SMAP和Landsat的卫星洪涝淹没评估与预报方法研究
Jinyang Du,John S Kimball,Justin Sheffield et al.
Jinyang Du et al.
The capability and synergistic use of multisource satellite observations for flood monitoring and forecasts is crucial for improving disaster preparedness and mitigation. Here, surface fractional water cover (FW) retrievals derived from Soi...
Microwave Radiometry at Frequencies From 500 to 1400 MHz: An Emerging Technology for Earth Observations [0.03%]
500至1400MHz频率的微波辐射计技术在地球观测中的应用与发展
Joel T Johnson,Kenneth C Jezek,Giovanni Macelloni et al.
Joel T Johnson et al.
Microwave radiometry has provided valuable spaceborne observations of Earth's geophysical properties for decades. The recent SMOS, Aquarius, and SMAP satellites have demonstrated the value of measurements at 1400 MHz for observing surface s...