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Improving the Seasonal Representation of ASCAT Soil Moisture and Vegetation Dynamics in a Temperate Climate

Isabella Pfeil, Mariette Vreugdenhil, Sebastian Hahn, Wolfgang Wagner, Peter Strauss, Günter Blöschl
2018 Remote Sensing  
Previous validation studies have demonstrated the accuracy of the Metop-A ASCAT soil moisture (SM) product, although over- and underestimation during different seasons of the year suggest a need for improving  ...  In this study, we analyzed whether adapting the vegetation characterization based on global parameters to regional conditions improves the seasonal representation of SM and vegetation optical depth ( τ  ...  Conclusions We analyzed the retrieval of surface soil moisture (SM) and vegetation optical depth τ from Metop-A ASCAT over a region in Lower Austria.  ... 
doi:10.3390/rs10111788 fatcat:b6lm324wojhibhc4ul5vugbwsa

A comparison between remotely-sensed and modelled surface soil moisture (and frozen status) at high latitudes

I. Gouttevin, A. Bartsch, G. Krinner, V. Naeimi
2013 Hydrology and Earth System Sciences Discussions  
The model shows a reduced ability to capture the main seasonal dynamics and spatial patterns of observed surface soil moisture in Northern Eurasia, namely a characteristic spring surface moistening resulting  ...  </strong> In this study, the combined surface status and surface soil moisture products retrieved by the ASCAT sensor within the ESA-DUE Permafrost project are compared to the hydrological outputs of the  ...  The authors thank Catherine Ottlé for valuable advice on the manuscript and acknowledge financial support by the European Union FP7-ENV project PAGE21 under  ... 
doi:10.5194/hessd-10-11241-2013 fatcat:hkgu7wwgsjg7hlnv7fndwdt2o4

The effect of assimilating satellite-derived soil moisture data in SiBCASA on simulated carbon fluxes in Boreal Eurasia

M. K. van der Molen, R. A. M. de Jeu, W. Wagner, I. R. van der Velde, P. Kolari, J. Kurbatova, A. Varlagin, T. C. Maximov, A. V. Kononov, T. Ohta, A. Kotani, M. C. Krol (+1 others)
2016 Hydrology and Earth System Sciences  
The match between SiBCASA and ASCAT soil moisture is best in the summer months over low vegetation. Nevertheless, ASCAT failed to detect the major droughts occurring between 2007 and 2013.  ...  the satellite-derived soil moisture improves the simulated soil moisture.  ...  Kurbatova and A. Varlagin, and the in situ observations in Tver were funded by the Russian Science Foundation, Grant 14-27-00065.  ... 
doi:10.5194/hess-20-605-2016 fatcat:su4evtedqnglzl6rsb2jg742my

The effect of assimilating satellite derived soil moisture in SiBCASA on simulated carbon fluxes in Boreal Eurasia

M. K. van der Molen, R. A. M. de Jeu, W. Wagner, I. R. van der Velde, P. Kolari, J. Kurbatova, A. Varlagin, T. C. Maximov, A. V. Kononov, T. Ohta, A. Kotani, M. C. Krol (+1 others)
2015 Hydrology and Earth System Sciences Discussions  
The match between SiBCASA and ASCAT soil moisture is best in the summer months over low vegetation. Nevertheless, ASCAT failed to detect the major droughts occurring between 2007 and 2013.  ...  the satellite derived soil moisture improves the simulated soil moisture.  ...  Kurbatova and A. Varlagin, and the in situ observations in Tver were funded by the Russian Science Foundation, Grant 14-27-00065. Edited by: P. Saco  ... 
doi:10.5194/hessd-12-9003-2015 fatcat:34dg4fnv5bbmrhuc57nypc45ey

Analysis of C-Band Scatterometer Moisture Estimations Derived Over a Semiarid Region

Rim Amri, Mehrez Zribi, Zohra Lili-Chabaane, Wolfgang Wagner, Stefan Hasenauer
2012 IEEE Transactions on Geoscience and Remote Sensing  
In this paper, soil moisture dynamics at the soil's surface (the first centimetres) and in its rootzone (at depths down to 1m), are investigated using 25×25 km 2 scale data (ASCAT/METOP scatterometer),  ...  Our study highlights the quality of the surface and root-zone soil moisture products, derived from ASCAT scatterometer data recorded over a two year period.  ...  Parts of this work was carried out in the framework of the Satellite Application Facility on Support to Operational Hydrology and Water Management (H-SAF).  ... 
doi:10.1109/tgrs.2012.2186458 fatcat:qrbhdn6qsbhadngdttwn23zdqa

Evaluation of remotely sensed soil moisture products using crowdsourced measurements

Luca Zappa, Mel Woods, Drew Hemment, Angelika Xaver, Wouter Dorigo, Kyriacos Themistocleous, Silas Michaelides, Vincent Ambrosia, Diofantos G. Hadjimitsis, Giorgos Papadavid
2020 Eighth International Conference on Remote Sensing and Geoinformation of the Environment (RSCy2020)  
In particular, we provide evidence of the added value to Earth Observation, thanks to (i) the high number of sensors deployed, covering a wide range of land use, environmental, and climatic conditions,  ...  We present GROW as a case study and demonstrate, for the first time, the use of crowdsourced observations to assess the temporal and spatial consistency of various satellite-derived soil moisture products  ...  Commonly, vegetation is less vigorous and/or sparser in arid climates compared to temperate and continental regions, thus allowing a better retrieval of soil moisture.  ... 
doi:10.1117/12.2571913 fatcat:2atgn7wlwnatfd5nzj2sghqzoa

The ASCAT Soil Moisture Product: A Review of its Specifications, Validation Results, and Emerging Applications

Wolfgang Wagner, Sebastian Hahn, Richard Kidd, Thomas Melzer, Zoltan Bartalis, Stefan Hasenauer, Julia Figa-Saldaña, Patricia de Rosnay, Alexander Jann, Stefan Schneider, Jürgen Komma, Gerhard Kubu (+10 others)
2013 Meteorologische Zeitschrift  
To provide a comprehensive overview of the major characteristics and caveats of the ASCAT soil moisture product, this paper describes the ASCAT instrument and the soil moisture processor and near-real-time  ...  Further, a review of applications studies shows that the use of the ASCAT soil moisture product is particularly advanced in the fields of numerical weather prediction and hydrologic modelling.  ...  Acknowledgments We gratefully acknowledge the support of the Austrian Space Applications Programme (ASAP) through the pro-  ... 
doi:10.1127/0941-2948/2013/0399 fatcat:7okcemnl6bampneiha2rk4w3am

Assessment and inter-comparison of recently developed/reprocessed microwave satellite soil moisture products using ISMN ground-based measurements

A. Al-Yaari, J.-P. Wigneron, W. Dorigo, A. Colliander, T. Pellarin, S. Hahn, A. Mialon, P. Richaume, R. Fernandez-Moran, L. Fan, Y.H. Kerr, G. De Lannoy
2019 Remote Sensing of Environment  
Soil moisture (SM) is a key state variable in understanding the climate system through its control on the land surface energy, water budget partitioning, and the carbon cycle.  ...  Soil moisture algorithms are in rapid development and their improvements/revisions are ongoing.  ...  Introduction Surface soil moisture (i.e. the water content in the first few centimeters of the soil; referred to as SM in the following) is a key state variable in better understanding the climate system  ... 
doi:10.1016/j.rse.2019.02.008 fatcat:5rqkemjwkbgctmfplulvgwufmq

The value of ASCAT soil moisture and MODIS snow cover data for calibrating a conceptual hydrologic model

Rui Tong, Juraj Parajka, Andreas Salentinig, Isabella Pfeil, Jürgen Komma, Borbála Széles, Martin Kubáň, Peter Valent, Mariette Vreugdenhil, Wolfgang Wagner, Günter Blöschl
2021 Hydrology and Earth System Sciences  
Recent advances in soil moisture remote sensing have produced satellite data sets with improved soil moisture mapping under vegetation and with higher spatial and temporal resolutions.  ...  Results show that the inclusion of soil moisture data in the calibration mainly improves the soil moisture simulations, the inclusion of snow data mainly improves the snow simulations, and the inclusion  ...  Austria has a warm, temperate climate, except for the Alps.  ... 
doi:10.5194/hess-25-1389-2021 fatcat:suo4kxnpqvar7jwbgjq2ycv7jq

Evaluation of a Global Soil Moisture Product from Finer Spatial Resolution SAR Data and Ground Measurements at Irish Sites

Chiara Pratola, Brian Barrett, Alexander Gruber, Gerard Kiely, Edward Dwyer
2014 Remote Sensing  
In the framework of the European Space Agency Climate Change Initiative, a global, almost daily, soil moisture (SM) product is being developed from passive and active satellite microwave sensors, at a  ...  This approach facilitated an understanding of the extent to which geophysical factors, such as soil texture, terrain composition and altitude, affect the retrieved ECV SM product values in temperate grasslands  ...  ENVISAT ASAR WS SM data were kindly provided by the Vienna University of Technology (TUW). In situ soil moisture data were provided by the Civil and Environmental Engineering Department, UCC.  ... 
doi:10.3390/rs6098190 fatcat:qvcs7ut5xrcsbhdtk77fe3pkxe

Frozen Soil Detection Based on Advanced Scatterometer Observations and Air Temperature Data as Part of Soil Moisture Retrieval

Simon Zwieback, Christoph Paulik, Wolfgang Wagner
2015 Remote Sensing  
Surface soil moisture is one of the operational products derived from Advanced Scatterometer (ASCAT) data.  ...  The method is assessed with proxy F/T states derived from modeled and in situ air and soil temperature data on a global basis.  ...  European Space Agency (ESA) through the Climate Change Initiative (CCI) Soil Moisture project and of the 7th Framework Program through the Geoland2 project (Project 218795).  ... 
doi:10.3390/rs70303206 fatcat:xzrlkpcdsvgnrdw3ytqwanakcq

Estimating surface soil moisture from SMAP observations using a Neural Network technique

J. Kolassa, R.H. Reichle, Q. Liu, S.H. Alemohammad, P. Gentine, K. Aida, J. Asanuma, S. Bircher, T. Caldwell, A. Colliander, M. Cosh, C. Holifield Collins (+6 others)
2018 Remote Sensing of Environment  
A Neural Network (NN) algorithm was developed to estimate global surface soil moisture for April 2015 to March 2017 with a 2-3 day repeat frequency using passive microwave observations from the Soil Moisture  ...  The NN was trained on GEOS-5 soil moisture target data, making the NN estimates consistent with the GEOS-5 climatology, such that they may ultimately be assimilated into this model without further bias  ...  Hence, the above results indicate a better representation of the soil moisture seasonal cycle in the two retrieval products compared to the model.In terms of the anomaly correlations (Figure6(b)), the  ... 
doi:10.1016/j.rse.2017.10.045 pmid:29290638 pmcid:PMC5744888 fatcat:ielfrlyd4jgjlks6ie4poheuim

Suitability of modelled and remotely sensed essential climate variables for monitoring Euro-Mediterranean droughts

C. Szczypta, J.-C. Calvet, F. Maignan, W. Dorigo, F. Baret, P. Ciais
2013 Geoscientific Model Development Discussions  
A better representation of the root-zone soil moisture profile could improve the simulations of both models.  ...  Two new remotely sensed leaf area index (LAI) and surface soil moisture (SSM) satellite-derived products are compared with two sets of simulations of the ORganizing Carbon and Hydrology In Dynamic EcosystEms  ...  Dorigo was supported by ESA's Climate Change Initiative for Soil Moisture (contract no. 4000104814/11/I-NB). Edited by: H. Sato The publication of this article is financed by CNRS-INSU.  ... 
doi:10.5194/gmdd-6-5553-2013 fatcat:ucknlduiwffirjgr6243ku3bdm

Suitability of modelled and remotely sensed essential climate variables for monitoring Euro-Mediterranean droughts

C. Szczypta, J.-C. Calvet, F. Maignan, W. Dorigo, F. Baret, P. Ciais
2014 Geoscientific Model Development  
A better representation of the root-zone soil moisture profile could improve the simulations of both models.  ...  </strong> Two new remotely sensed leaf area index (LAI) and surface soil moisture (SSM) satellite-derived products are compared with two sets of simulations of the ORganizing Carbon and Hydrology In Dynamic  ...  Dorigo was supported by ESA's Climate Change Initiative for Soil Moisture (contract no. 4000104814/11/I-NB). Edited by: H. Sato The publication of this article is financed by CNRS-INSU.  ... 
doi:10.5194/gmd-7-931-2014 fatcat:u5unot7sznfkze6ulclu5tlslu

Skill and Global Trend Analysis of Soil Moisture from Reanalyses and Microwave Remote Sensing

C. Albergel, W. Dorigo, R. H. Reichle, G. Balsamo, P. de Rosnay, J. Muñoz-Sabater, L. Isaksen, R. de Jeu, W. Wagner
2013 Journal of Hydrometeorology  
Evaluation of the time series and anomalies from a moving monthly mean shows a good performance of the three products in capturing the annual cycle of surface soil moisture and its short-term variability  ...  As the spatial extent and fractions of significant trends in both products differ, the trend reflected in the majority of grid points within different climate classes was investigated and compared to that  ...  The authors would like to acknowledge J.-C. Calvet from M et eo-France for giving us access to the SMOSMANIA data. J. Walker and  ... 
doi:10.1175/jhm-d-12-0161.1 fatcat:xdn3p6x5hngn3bf3yiq2paxsbm
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