TR32-Database: Database of Transregio 32

[1042] - Soil moisture and soil properties estimation in the Community Land Model with synthetic brightness temperature observations

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Citation
Han, X., Hendricks-Franssen, H., Montzka, C., Vereecken, H., 2014. Soil moisture and soil properties estimation in the Community Land Model with synthetic brightness temperature observations. Water Resources Research, 50 (7), 6081 - 6105. DOI: 10.1002/2013WR014586.
Identification
Title(s):Main Title: Soil moisture and soil properties estimation in the Community Land Model with synthetic brightness temperature observations
Description(s):Abstract: The Community Land Model (CLM) includes a large variety of parameterizations, also for flow in the unsaturated zone and soil properties. Soil properties introduce uncertainties into land surface model predictions. In this paper, soil moisture and soil properties are updated for the coupled CLM and Community Microwave Emission Model (CMEM) by the Local Ensemble Transform Kalman Filter (LETKF) and the state augmentation method. Soil properties are estimated through the update of soil textural properties and soil organic matter density. These variables are used in CLM for predicting the soil moisture retention characteristic and the unsaturated hydraulic conductivity, and the soil texture is used in CMEM to calculate the soil dielectric constant. The following scenarios were evaluated for the joint state and parameter estimation with help of synthetic L-band brightness temperature data assimilation: (i) the impact of joint state and parameter estimation; (ii) updating of soil properties in CLM alone, CMEM alone or both CLM and CMEM; (iii) updating of soil properties without soil moisture update; (iv) the observation localization of LETKF. The results show that the characterization of soil properties through the update of textural properties and soil organic matter density can strongly improve with assimilation of brightness temperature data. The optimized soil properties also improve the characterization of soil moisture, soil temperature, actual evapotranspiration, sensible heat flux, and soil heat flux. The best results are obtained if the soil properties are updated only. The coupled CLM and CMEM model is helpful for the parameter estimation. If soil properties are biased, assimilation of soil moisture data with only state updates increases the root mean square error for evapotranspiration, sensible heat flux, and soil heat flux.
Identifier(s):DOI: 10.1002/2013WR014586
Citation Advice:Han, X., Hendricks-Franssen, H., Montzka, C., Vereecken, H., 2014. Soil moisture and soil properties estimation in the Community Land Model with synthetic brightness temperature observations. Water Resources Research, 50 (7), 6081 - 6105. DOI: 10.1002/2013WR014586
Responsible Party
Creator(s):Author: Xujun Han
Author: Harrie-Jan Hendricks-Franssen
Author: Carsten Montzka
Author: Harry Vereecken
Publisher:AGU Publications
Topic
TR32 Topic:Soil
Subject(s):CRC/TR32 Keywords: Soil Moisture, Surface Fluxes, Data Assimilation
File Details
File Name:Han_2014_WRR.pdf
Data Type:Text
Size(s):25 Pages
File Size:5053 kB (4.935 MB)
Date(s):Date Accepted: 2014-07-02
Available: 2014-07-23
Mime Type:application/pdf
Data Format:PDF
Language:English
Status:Completed
Constraints
Download Permission:OnlyTR32
General Access and Use Conditions:According to the TR32DB data policy agreement.
Access Limitations:According to the TR32DB data policy agreement.
Licence:TR32DB Data policy agreement
Geographic
North:51.4787847
East:7.3851807
South:50.0897166
West:5.1879150
Measurement Region:RurCatchment
Measurement Location:--RurCatchment--
Specific Informations - Publication
Status:Published
Review:PeerReview
Year:2014
Type:Article
Article Type:Journal
Source:Water Resources Research
Issue:7
Volume:50
Number Of Pages:25
Page Range:6081 - 6105
Metadata Details
Metadata Creator:Tanja Kramm
Metadata Created:2014-09-11
Metadata Last Updated:2014-09-11
Subproject:C6
Funding Phase:2
Metadata Language:English
Metadata Version:V40
Dataset Metrics
Page Visits:152
Metadata Downloads:0
Dataset Downloads:1
Dataset Activity
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