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Special Issue "Retrieval, Validation and Application of Satellite Soil Moisture Data"

A special issue of Remote Sensing (ISSN 2072-4292).

Deadline for manuscript submissions: 20 November 2017

Special Issue Editors

Guest Editor
Prof. Dr. Wolfgang Wagner

Research Group Remote Sensing, Department of Geodesy and Geoinformation (GEO), Vienna University of Technology (TU Wien), Gusshausstrasse 27-29, 1040 Vienna, Austria
Website | E-Mail
Fax: +43 1 58801 12299
Interests: remote sensing; geophysical parameter retrieval; airborne laser scanning; full-waveform lidar; radar remote sensing; soil moisture
Guest Editor
Dr. Claudia Notarnicola

Institute for Applied Remote Sensing, EURAC Research, 39100 Bolzano, Italy
Website | E-Mail
Guest Editor
Dr. John J. Qu

Professor and Director, GENRI & ESTC, Department of Geography and GeoInformation Science (GGS) and Global Environment and Natural Resources Institute (GENRI), College of Science, George Mason University, Fairfax, VA 22030, USA
Website | E-Mail
Phone: 1-703-993-3958 (o)
Interests: remote sensing; Earth system and climate science; soil moisture and drought; water-energy-food nexus; environment and fire sciences
Guest Editor
Dr. Dongryeol Ryu

Department of Infrastructure Engineering, The University of Melbourne, Parkville, VIC 3010, Australia
Website | E-Mail
Phone: +61-3-8344-7115
Interests: Microwave remote sensing; soil moisture; data assimilation; soil vegetation atmosphere transfer

Special Issue Information

Dear Colleagues,

In recent years, we have seen a proliferation in the provision and use of satellite soil moisture data derived from active and passive microwave sensors (SMAP, SMOS, ASCAT, AMRS-2, Sentinel-1, etc.) and optical/thermal imagers. However, there are still many open scientific question related to the way of how soil moisture data are being retrieved, validated and applied. Additionally, there is a high need to develop novel approaches for improving the spatio-temporal sampling of the data and their accuracy. Therefore, the purpose of this Special Issue is to discuss and reconcile recent methodological advances in the development, validation and application of global satellite soil moisture data. This Special Issue is related to the 4th Satellite Soil Moisture Validation and Application Workshop, which will place at the Vienna University of Technology (TU Wien) from 19–20 September 2017 (http://smw.geo.tuwien.ac.at/). Topics to be discussed at the workshop are:

  • What is the quality of the current satellite products and what can we expect in the near future?
  • What is information content at Level 1 and how to exploit the availability of multiple satellites?
  • Who is using satellite soil moisture data and for what purpose?
  • What are the best practices in validating soil moisture products?
  • What are the main limitations of satellite soil moisture data from a user’s perspective?
  • What is the future of satellite-based soil moisture remote sensing?

We invite in particular authors attending the workshop to submit their papers to this Special Issue of Remote Sensing.

Authors are required to check and follow the specific Instructions to Authors, http://www.mdpi.com/journal/remotesensing/instructions.

Univ.-Prof. Wolfgang Wagner
Dr. Claudia Notarnicola
Univ.-Prof. John J. Qu
Univ.-Prof. Dongryeol Ryu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Remote Sensing is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Published Papers (1 paper)

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Research

Open AccessArticle Estimating Time Series Soil Moisture by Applying Recurrent Nonlinear Autoregressive Neural Networks to Passive Microwave Data over the Heihe River Basin, China
Remote Sens. 2017, 9(6), 574; doi:10.3390/rs9060574
Received: 4 May 2017 / Revised: 28 May 2017 / Accepted: 6 June 2017 / Published: 8 June 2017
PDF Full-text (13813 KB) | HTML Full-text | XML Full-text
Abstract
A method using a nonlinear auto-regressive neural network with exogenous input (NARXnn) to retrieve time series soil moisture (SM) that is spatially and temporally continuous and high quality over the Heihe River Basin (HRB) in China was investigated in this study. The input
[...] Read more.
A method using a nonlinear auto-regressive neural network with exogenous input (NARXnn) to retrieve time series soil moisture (SM) that is spatially and temporally continuous and high quality over the Heihe River Basin (HRB) in China was investigated in this study. The input training data consisted of the X-band dual polarization brightness temperature (TB) and the Ka-band V polarization TB from the Advanced Microwave Scanning Radiometer II (AMSR2), Global Land Satellite product (GLASS) Leaf Area Index (LAI), precipitation from the Tropical Rainfall Measuring Mission (TRMM) and the Global Precipitation Measurement (GPM), and a global 30 arc-second elevation (GTOPO-30). The output training data were generated from fused SM products of the Japan Aerospace Exploration Agency (JAXA) and the Land Surface Parameter Model (LPRM). The reprocessed fused SM from two years (2013 and 2014) was inputted into the NARXnn for training; subsequently, SM during a third year (2015) was estimated. Direct and indirect validations were then performed during the period 2015 by comparing with in situ measurements, SM from JAXA, LPRM and the Global Land Data Assimilation System (GLDAS), as well as precipitation data from TRMM and GPM. The results showed that the SM predictions from NARXnn performed best, as indicated by their higher correlation coefficients (R ≥ 0.85 for the whole year of 2015), lower Bias values (absolute value of Bias ≤ 0.02) and root mean square error values (RMSE ≤ 0.06), and their improved response to precipitation. This method is being used to produce the NARXnn SM product over the HRB in China. Full article
(This article belongs to the Special Issue Retrieval, Validation and Application of Satellite Soil Moisture Data)
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