scispace - formally typeset
Open AccessJournal Article

Triangle Models and Misconceptions

Toby N. Carlson
- 01 Sep 2013 - 
- Vol. 3, Iss: 3, pp 155-158
TLDR
In this article, some possible misinterpretations are pointed out in the application of the triangle method, and it illustrates the use of both simple and complex formulations to obtain solutions is also illustrated.
Abstract
Some misconceptions in the use of the triangle method for remotely estimating surface soil water content and surface evapotranspiration are described. With the correct interpretation of the geometry, simple solutions for surface soil moisture and evapotranspiration fraction can be obtained. In this paper, some possible misinterpretations are pointed out in the application of the triangle method, and it illustrates the use of both simple and complex formulations to obtain solutions is also illustrated.

read more

Citations
More filters
Journal ArticleDOI

Ground, Proximal, and Satellite Remote Sensing of Soil Moisture

TL;DR: 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.
Journal ArticleDOI

The optical trapezoid model: A novel approach to remote sensing of soil moisture applied to Sentinel-2 and Landsat-8 observations

TL;DR: In this paper, the authors proposed a novel OPtical TRApezoid Model (OPTRAM), which is based on the linear physical relationship between soil moisture and shortwave infrared transformed reflectance (STR ) and is parameterized based on pixel distribution within the STR - VI space.
Journal ArticleDOI

A New Soil Moisture Agricultural Drought Index (SMADI) Integrating MODIS and SMOS Products: A Case of Study over the Iberian Peninsula

TL;DR: The proposed Soil Moisture Agricultural Drought Index (SMADI) combines the soil and temperature conditions while including the lagged response of vegetation and allowed for a coherent description of the drought conditions of the IP during the study period.
Journal ArticleDOI

An End-Member-Based Two-Source Approach for Estimating Land Surface Evapotranspiration From Remote Sensing Data

TL;DR: An end-member-based two-source approach for estimating land surface ET from remote sensing data, considering the differing responses of soil water content at the upper surface layer to soil evaporation and at the deeper root zone layer to vegetation transpiration.
Journal ArticleDOI

A new method for estimating of evapotranspiration and surface soil moisture from optical and thermal infrared measurements: the simplified triangle

TL;DR: In this article, Earth Observation (EO) provides a promising approach towards deriving accurate spatiotemporal estimates of key parameters characterizing land surface interactions, such as latent (LE) and s...
References
More filters
Journal ArticleDOI

An Overview of the “Triangle Method” for Estimating Surface Evapotranspiration and Soil Moisture from Satellite Imagery

TL;DR: In this paper, the authors present an overview of the triangle method for estimating soil surface wetness and evapotranspiration fraction from satellite imagery and show how the triangle can be created from a land surface model by superimposing the model triangle over the observed one.
Journal ArticleDOI

An application of the Ts–VI triangle method with enhanced edges determination for evapotranspiration estimation from MODIS data in arid and semi-arid regions: Implementation and validation

TL;DR: In this article, a practical algorithm based on the surface temperature-vegetation index (T(s)-VI triangle method is developed to determine quantitatively the dry and wet edges of this triangle space.
Journal ArticleDOI

Downscaling SMOS-Derived Soil Moisture Using MODIS Visible/Infrared Data

TL;DR: Following the SMOS launch, a downscaling strategy for the estimation of soil moisture at high resolution from SMOS using MODIS VIS/IR data has been developed and is validated against in situ soil moisture data from the OZnet soil moisture monitoring network, in South-Eastern Australia.
Journal ArticleDOI

Assessing the impact of end‐member selection on the accuracy of satellite‐based spatial variability models for actual evapotranspiration estimation

TL;DR: In this paper, the authors examined the impact of end-members selection on the performance and mechanisms of error propagation in satellite-based spatial variability models for estimating actual evapotranspiration, using the triangle, surface energy balance algorithm for land (SEBAL), and mapping evapranspiration with high resolution and internalized calibration (METRIC) models.
Journal ArticleDOI

Satellite Remote Sensing of Land Use Changes in and around San José, Costa Rica

TL;DR: In this paper, the effects of urbanization on surface microclimate during a 7-year period in San Jose, Costa Rica and its surroundings are expressed as changes in fractional vegetation cover, scaled surface temperature, surface wetness, and surface evapotranspiration.
Related Papers (5)
Trending Questions (1)
How are triangles used in the field of civil engineering?

Triangles are used in civil engineering for various purposes, such as calculating surface soil water content and surface evapotranspiration using the triangle method.