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Recent Progress on Modeling Land Emission and Retrieving Soil Moisture on the Tibetan Plateau Based on L-Band Passive Microwave Remote Sensing

Xiaojing Wu, Jun Wen
2022 Remote Sensing  
In recent years, progress has been made in its in-depth application and development in the Tibetan Plateau (TP) which has a complex natural environment.  ...  For future work, we suggest (i) sorting out the in situ observations and conducting long-term trend evaluation and analysis of current L-band SM products, (ii) extending current progress made at the site  ...  The observation system consists of three dual-polarized L-band radiometers (1.41 GHz) and one fully polarized L-band scatterometer (1.26 GHz).  ... 
doi:10.3390/rs14174191 fatcat:oixkcvkhnrdslpiirabuk7yhl4

Using a Discrete Scattering Model to Constrain Water Cloud Model for Simulating Ground-Based Scatterometer Measurements and Retrieving Soil Moisture

Xiaojing Bai, Donghai Zheng, Jun Wen, Xin Wang, R Van der Velde
2021 IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing  
One year of C-band co-polarized σ o observations are collected by a ground-based scatterometer deployed in the seasonally frozen Tibetan meadow ecosystem.  ...  transmissivity agree well with the seasonal vegetation dynamics; ii) the total scattering simulated by the TVG constrained WCMs shows a good consistency with the scatterometer measurements, and the simulated  ...  [43] , [44] and Bai et al. [45] for the same study area using respectively Aquarius and SMAP L-band active and passive observations.  ... 
doi:10.1109/jstars.2021.3111606 fatcat:v5d7wspivrholoqstselihrkba

Soil Moisture Remote Sensing across Scales

Nemesio Rodríguez-Fernández, Ahmad Al Bitar, Andreas Colliander, Tianjie Zhao
2019 Remote Sensing  
Soil moisture plays an important role in the water, carbon, and energy cycles.  ...  We also review these papers regarding the data, the methods, and the different applications discussed.  ...  A partial contribution to this effort was made at the Jet Propulsion Laboratory, California Institute of Technology under contract with National Aeronautics and Space Administration.  ... 
doi:10.3390/rs11020190 fatcat:vz7eji5nxbcllh4p4ewf7eyx3y

Potential soil moisture product from the Chinese HY-2 scanning microwave radiometer and its initial assessment

Tianjie Zhao, Jiancheng Shi, Mingsen Lin, Xiaojun Yin, Yong Liu, Huimin Lan, Chuan Xiong
2014 Journal of Applied Remote Sensing  
Initial assessments were performed using soil moisture measurements by in situ underground sensors over two selected networks: REMEDHUS in Spain and CTP-SMTMN network over the Tibetan Plateau.  ...  The onboard scanning microwave radiometer (RM) is primarily designed for sea surface temperature and wind speed mapping.  ...  over the Tibetan Plateau.  ... 
doi:10.1117/1.jrs.8.083560 fatcat:5tqsoewpajbrben4itg3rpy5d4

Remote Sensing of Environmental Changes in Cold Regions: Methods, Achievements and Challenges

Jinyang Du, Jennifer D. Watts, Lingmei Jiang, Hui Lu, Xiao Cheng, Claude Duguay, Mary Farina, Yubao Qiu, Youngwook Kim, John S. Kimball, Paolo Tarolli
2019 Remote Sensing  
selected key variables related to ice, snow, permafrost, water bodies, and vegetation; (b) highlighting recent environmental nonstationarity occurring in the Arctic, Tibetan Plateau, and Antarctica as  ...  With the advance of earth observation technology, remote sensing has become increasingly important for detecting, monitoring, and understanding environmental changes over vast and remote regions.  ...  , 2] and Tibetan Plateau (TP) [3, 4] .  ... 
doi:10.3390/rs11161952 fatcat:63wghdyherdo3cyxasqpcbrz3m

Modelling the passive microwave signature from land surfaces: A review of recent results and application to the L-band SMOS & SMAP soil moisture retrieval algorithms

J.-P. Wigneron, T.J. Jackson, P. O'Neill, G. De Lannoy, P. de Rosnay, J.P. Walker, P. Ferrazzoli, V. Mironov, S. Bircher, J.P. Grant, M. Kurum, M. Schwank (+12 others)
2017 Remote Sensing of Environment  
This activity has relied on many field (mainly tower-based) and airborne experimental campaigns, and since 2010-2011, on the SMOS and Aquarius space-borne L-band observations.  ...  In this paper, we present a review of the significant progress which has been made over the last decade in this field of research with a focus on L-band, and a discussion on possible applications to the  ...  The authors wish to thank the three anonymous reviewers for their helpful comments and Sylvie Renaud (IMS) for fruitful discusions.  ... 
doi:10.1016/j.rse.2017.01.024 fatcat:wnl73fnfeffmvfobwa3q4fos3m

Ground, Proximal and Satellite Remote Sensing of Soil Moisture

Ebrahim Babaeian, Morteza Sadeghi, Scott B. Jones, Carsten Montzka, Harry Vereecken, Markus Tuller
2019 Reviews of Geophysics  
Soil moisture (SM) is a key hydrologic state variable that is of significant importance for numerous Earth and environmental science applications that directly impact the global environment and human society  ...  Despite the impressive progress over the last decade, there are still many opportunities and needs to, for example, improve SM retrieval from remotely sensed optical, thermal, and microwave data and opportunities  ...  Acknowledgments We acknowledge funding from the National Science Foundation (NSF) via grants 1521164 and 1521469 awarded to the University of Arizona and Utah State University.  ... 
doi:10.1029/2018rg000618 fatcat:hcfa2uqiz5ffnf7o3fijc6rnwu

The global distribution and dynamics of surface soil moisture

Kaighin A. McColl, Seyed Hamed Alemohammad, Ruzbeh Akbar, Alexandra G. Konings, Simon Yueh, Dara Entekhabi
2017 Nature Geoscience  
Here we introduce a metric of soil moisture memory and use a full year of global observations from NASA's Soil Moisture Active Passive mission to show that surface soil moisture-a storage believed to make  ...  However, sparse and uneven observations have made it di cult to quantify the global distribution and dynamics of surface soil moisture.  ...  SMAP measures L-band microwave radiation emitted and scattered from the land surface, using a radiometer and radar, respectively.  ... 
doi:10.1038/ngeo2868 fatcat:o3xlcwgin5fsjedey3ncqgjvz4

Daily High-Resolution Land Surface Freeze/Thaw Detection Using Sentinel-1 and AMSR2 Data

Jian Wang, Lingmei Jiang, Kimmo Rautiainen, Cheng Zhang, Zhiqiang Xiao, Heng Li, Jianwei Yang, Huizhen Cui
2022 Remote Sensing  
In this study, we propose a new method for detecting daily land surface F/T state at 1 km spatial resolution by combining the Sentinel-1 radar and the Advanced Microwave Scanning Radiometer 2 (AMSR2) with  ...  The overall accuracy of this daily 1 km F/T is more than 88.1% when evaluated with the in situ 5 cm soil temperature over China and Canada.  ...  Acknowledgments: We would also like to thank the Japan Aerospace Exploration Agency for providing the AMSR2 L3 data and the European Space Agency for providing the Sentinel-1 data.  ... 
doi:10.3390/rs14122854 fatcat:lph35jnaazd4th3rkvumqxeiv4

Closing the water cycle from observations across scales: Where do we stand?

Wouter Dorigo, Stephan Dietrich, Filipe Aires, Luca Brocca, Sarah Carter, Jean-François Cretaux, David Dunkerley, Hiroyuki Enomoto, René Forsberg, Andreas Güntner, Michaela I. Hegglin, Rainer Hollmann (+20 others)
2021 Bulletin of The American Meteorological Society - (BAMS)  
We conclude that, while long-term water-cycle monitoring has greatly advanced in the past, many observational gaps still need to be overcome to close the water budget and enable a comprehensive and consistent  ...  The Global Climate Observing System (GCOS) defines a suite of Essential Climate Variables (ECVs), many related to the water cycle, required to systematically monitor the Earth's climate system.  ...  Acknowledgments We thank Gabi Hegerl and Robert Reinecke for their advice on the manuscript and Andrea Wessler for graphic editing.  ... 
doi:10.1175/bams-d-19-0316.1 fatcat:quowsacbdvhv7phvlno653t7ii

The International Soil Moisture Network: serving Earth system science for over a decade

Wouter Dorigo, Irene Himmelbauer, Daniel Aberer, Lukas Schremmer, Ivana Petrakovic, Luca Zappa, Wolfgang Preimesberger, Angelika Xaver, Frank Annor, Jonas Ardö, Dennis Baldocchi, Marco Bitelli (+56 others)
2021 Hydrology and Earth System Sciences  
The main scope of this paper is to inform readers about the evolution of the ISMN over the past decade, including a description of network and data set updates and quality control procedures.  ...  As of July 2021, the ISMN now contains the data of 71 networks and 2842 stations located all over the globe, with a time period spanning from 1952 to the present.  ...  A40 NGARI The NGARI network is part of the Tibetan Plateau observatory of plateau-scale soil moisture and soil temperature (Tibet-Obs) and consists of 23 stations located in a cold arid climate in Tibet  ... 
doi:10.5194/hess-25-5749-2021 fatcat:qfcqrtutmzabbanpa46ulbd23y

State of the Climate in 2020

J. Blunden, T. Boyer
2021 Bulletin of The American Meteorological Society - (BAMS)  
AbstractEditors note: For easy download the posted pdf of the State of the Climate in 2020 is a very low-resolution file. A high-resolution copy of the report is available by clicking here.  ...  Please be patient as it may take a few minutes for the high-resolution file to download.  ...  As of 21 July, there were 14 fatalities and more than 35,000 people affected and over 3400 houses destroyed, with loss of livestock and crops.  ... 
doi:10.1175/2021bamsstateoftheclimate.1 fatcat:2fmwtvqkknbtfoh6ffxlnehe7i

P-band Microwave Radiometry and Soil Moisture Retrieval

Looking towards the future, P-band (0.3-1 GHz) is a promising technique to enhance the current L-band (1.4 GHz) missions, due to the postulated greater moisture retrieval depth and reduced roughness and  ...  , therefore paving the way for a successful P-band mission to obtain deeper and more accurate global soil moisture information.  ...  Acknowledgments It has been a long and at times daunting journey for the past three years and five months. This thesis would not have been possible without the inspiration and support  ... 
doi:10.26180/19670928 fatcat:mz5hsbt2praoxe245otivbdveu