Critical analysis of thermal inertia approaches for surface soil water content retrieval

Risultato della ricerca: Article

27 Citazioni (Scopus)

Abstract

The “thermal inertia” method to retrieve surface soil water content maps on bare or sparsely-vegetated soils is analysed. The study area is a small experimental watershed, where optical and thermal images (in day and night time) and in situ data were simultaneously acquired. The sensitivity of thermal inertia to the phase difference between incoming radiation and soil temperature is demonstrated. Thus, to obtain an accurate value of the phase difference, the temporal distance between thermographs using a three-temperature approach is evaluated. We highlight when a cosine correction of the temperature needs to be applied, depending on whether the thermal inertia formulation includes two generic acquisition times, or not. Finally, the deviation in soil water content retrieval is quantifies for given values of each parameter by performing a sensitivity analysis on the basic parameters of the thermal inertia method that are usually affected by calibration errors.
Lingua originaleEnglish
pagine (da-a)1144-1161
Numero di pagine18
RivistaDefault journal
Volume58
Stato di pubblicazionePublished - 2013

Fingerprint

critical analysis
inertia
soil water
water content
surface water
soil temperature
sensitivity analysis
temperature
watershed
calibration
soil
method
parameter

All Science Journal Classification (ASJC) codes

  • Water Science and Technology

Cita questo

@article{2dc5a0428d114858ae2dd9a4c03be821,
title = "Critical analysis of thermal inertia approaches for surface soil water content retrieval",
abstract = "The “thermal inertia” method to retrieve surface soil water content maps on bare or sparsely-vegetated soils is analysed. The study area is a small experimental watershed, where optical and thermal images (in day and night time) and in situ data were simultaneously acquired. The sensitivity of thermal inertia to the phase difference between incoming radiation and soil temperature is demonstrated. Thus, to obtain an accurate value of the phase difference, the temporal distance between thermographs using a three-temperature approach is evaluated. We highlight when a cosine correction of the temperature needs to be applied, depending on whether the thermal inertia formulation includes two generic acquisition times, or not. Finally, the deviation in soil water content retrieval is quantifies for given values of each parameter by performing a sensitivity analysis on the basic parameters of the thermal inertia method that are usually affected by calibration errors.",
author = "{La Loggia}, Goffredo and Antonino Maltese and Marcella Cannarozzo and Fulvio Capodici and Giuseppe Ciraolo and Bates",
year = "2013",
language = "English",
volume = "58",
pages = "1144--1161",
journal = "Default journal",

}

TY - JOUR

T1 - Critical analysis of thermal inertia approaches for surface soil water content retrieval

AU - La Loggia, Goffredo

AU - Maltese, Antonino

AU - Cannarozzo, Marcella

AU - Capodici, Fulvio

AU - Ciraolo, Giuseppe

AU - Bates, null

PY - 2013

Y1 - 2013

N2 - The “thermal inertia” method to retrieve surface soil water content maps on bare or sparsely-vegetated soils is analysed. The study area is a small experimental watershed, where optical and thermal images (in day and night time) and in situ data were simultaneously acquired. The sensitivity of thermal inertia to the phase difference between incoming radiation and soil temperature is demonstrated. Thus, to obtain an accurate value of the phase difference, the temporal distance between thermographs using a three-temperature approach is evaluated. We highlight when a cosine correction of the temperature needs to be applied, depending on whether the thermal inertia formulation includes two generic acquisition times, or not. Finally, the deviation in soil water content retrieval is quantifies for given values of each parameter by performing a sensitivity analysis on the basic parameters of the thermal inertia method that are usually affected by calibration errors.

AB - The “thermal inertia” method to retrieve surface soil water content maps on bare or sparsely-vegetated soils is analysed. The study area is a small experimental watershed, where optical and thermal images (in day and night time) and in situ data were simultaneously acquired. The sensitivity of thermal inertia to the phase difference between incoming radiation and soil temperature is demonstrated. Thus, to obtain an accurate value of the phase difference, the temporal distance between thermographs using a three-temperature approach is evaluated. We highlight when a cosine correction of the temperature needs to be applied, depending on whether the thermal inertia formulation includes two generic acquisition times, or not. Finally, the deviation in soil water content retrieval is quantifies for given values of each parameter by performing a sensitivity analysis on the basic parameters of the thermal inertia method that are usually affected by calibration errors.

UR - http://hdl.handle.net/10447/91744

M3 - Article

VL - 58

SP - 1144

EP - 1161

JO - Default journal

JF - Default journal

ER -