An Objective Methodology For Merging Satellite And Model Based Soil Moisture Products

Date

2012-04-19

Author

Yılmaz, Mustafa Tuğrul
Anderson, Martha
Hain, Chris

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

175
views

0
downloads

An objective methodology that does not require any user-defined parameter assumptions is introduced to obtain an improved soil moisture product along with associated uncertainty estimates. This new product is obtained by merging model-, thermal infrared remote sensing-, and microwave remote sensing-based soil moisture estimates in a least squares framework where uncertainty estimates for each product are obtained using triple collocation. The merged anomaly product is validated against in situ based soil moisture data and shows higher correlations with observations than individual input products; however, it is not superior to a naively merged product acquired by averaging the products using equal weighting. The resulting combined soil moisture estimate is an improvement over currently available soil moisture products due to its reduced uncertainty and can be used as a standalone soil moisture product with available uncertainty estimates.

Subject Keywords

ERROR CHARACTERIZATION, TRIPLE COLLOCATION, NEAR-SURFACE, VALIDATION, ASSIMILATION, RETRIEVAL, PRECIPITATION, VEGETATION, ENSEMBLE, NETWORK

URI

https://hdl.handle.net/11511/40189

DOI

https://doi.org/10.1029/2011wr011682

Collections

Department of Civil Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

A quality-based approach to estimating quantitative elasticities for differentiated products: an application to retail milk demand Gülseven, Osman (2015-09-01) This article introduces the Hedonic Metric (HM) approach as an original method to model the demand for differentiated products using qualitative attributes. Our approach is based on a two-stage estimation procedure that utilizes qualitative characteristics of products. First, we create an n-dimensional hedonic space based on the qualitative information available to consumers. Next, we allocate the differentiated products into this space and estimate the quantitative demand elasticities for these products us...
An analytic network process model for risk quantification of mega construction projects Erol, Hacı Hüseyin; Dikmen Toker, İrem; Atasoy Özcan, Güzide; Birgönül, Mustafa Talat (2022-04-01) Risk, complexity, and uncertainty are inherent components of megaprojects due to their unique features. However, existing project management practices lack a structured synthesis of these concepts, which leads to unrealistic risk assessments, ineffective management strategies, and poor project performance. In order to fill this gap, this research aims to develop a holistic risk quantification approach incorporating risk-related concepts. For this purpose, a conceptual risk assessment process developed for m...
A New Approach to Optimize Ultimate Geometry of Open Pit Mines with Variable Overall Slope Angles Altuntov, Firdevs Kübra; Erkayaoğlu, Mustafa (2021-01-01) © 2021, International Association for Mathematical Geosciences.The optimization method for determining open pit limit is important, as it is crucial to achieve the most profitable outcome from the limited amount of reserves available. However, importance must be also given to geotechnical aspects to ensure that safety requirements are met. Thus, overall slope angle (OSAs) must be incorporated in the optimization process. In the conventional methods, there were problems in incorporating various OSAs, or they...
A new method for design parameter optimization of products or processes with an ordinal categorical response Erdoğan, Pınar; Köksal, Gülser; Dolgun, Leman Esra; Department of Industrial Engineering (2022-8) It is an important design problem to obtain the best parameter values that are insensitive to the variability of input, process or environmental factors of a product or process. Therefore, many industrial organizations use robust parameter design (RPD). While there are many methods in the literature for design parameter optimization with continuous quality characteristics, fewer studies are found for ordered categorical quality characteristics. This study proposes a new method for finding robust levels of d...
A simulative model for optimum open pit design Erarslan, K; Celebi, N (2001-10-01) Previous research in the area of open pit mine optimization has focused on profit maximization by optimizing pit limits or optimizing production schedules. However, these two approaches are interrelated and dependent on each other. Recent studies have recognized the limitation of this optimization approach, Consequently, there is a need for a more comprehensive modelling strategy. Such an optimization model should incorporate mining activities that are simulated (as they are expected to occur) as much as po...

Citation Formats

M. T. Yılmaz, M. Anderson, and C. Hain, “An Objective Methodology For Merging Satellite And Model Based Soil Moisture Products,” 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40189.