Improved observation and modelling of bare soil surfaces for soil moisture retrieval

Thuy Le Toan, Malcolm Davidson, Francesco Mattia, Pierre Borderies, Isabelle Chenerie, Terhikki Manninen, Maurice Borgeaud

Research output: Contribution to journalArticleScientific

9 Citations (Scopus)

Abstract

Since the launch of ERS-1 in 1991, a number of studies have yielded experimental correlations between the observed radar backscatter and soil moisture prevalent at the time of the image acquisition. However at the same time these empirical results appear to be both site and time dependent and difficult to generalise unless the resolution is degraded in order to average out roughness influences. Surface roughness is known to play an important role in the scattering of electromagnetic waves from natural surfaces. The relative sensitivity of the radar backscatter to surface roughness compared to that of the soil moisture depends on the wave characteristics (frequency, polarisation, incidence) and on the geometric and dielectric properties of the soil surfaces.
Original languageEnglish
Pages (from-to)20-24
JournalEarth Observation Quarterly
Issue number62
Publication statusPublished - 1999
MoE publication typeB1 Article in a scientific magazine

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bare soil
surface roughness
backscatter
soil surface
soil moisture
radar
dielectric property
electromagnetic wave
modeling
roughness
polarization
scattering
ERS

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Le Toan, T., Davidson, M., Mattia, F., Borderies, P., Chenerie, I., Manninen, T., & Borgeaud, M. (1999). Improved observation and modelling of bare soil surfaces for soil moisture retrieval. Earth Observation Quarterly, (62), 20-24.
Le Toan, Thuy ; Davidson, Malcolm ; Mattia, Francesco ; Borderies, Pierre ; Chenerie, Isabelle ; Manninen, Terhikki ; Borgeaud, Maurice. / Improved observation and modelling of bare soil surfaces for soil moisture retrieval. In: Earth Observation Quarterly. 1999 ; No. 62. pp. 20-24.
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title = "Improved observation and modelling of bare soil surfaces for soil moisture retrieval",
abstract = "Since the launch of ERS-1 in 1991, a number of studies have yielded experimental correlations between the observed radar backscatter and soil moisture prevalent at the time of the image acquisition. However at the same time these empirical results appear to be both site and time dependent and difficult to generalise unless the resolution is degraded in order to average out roughness influences. Surface roughness is known to play an important role in the scattering of electromagnetic waves from natural surfaces. The relative sensitivity of the radar backscatter to surface roughness compared to that of the soil moisture depends on the wave characteristics (frequency, polarisation, incidence) and on the geometric and dielectric properties of the soil surfaces.",
author = "{Le Toan}, Thuy and Malcolm Davidson and Francesco Mattia and Pierre Borderies and Isabelle Chenerie and Terhikki Manninen and Maurice Borgeaud",
note = "Project code: A6SU00646",
year = "1999",
language = "English",
pages = "20--24",
journal = "Earth Observation Quarterly",
issn = "0256-596X",
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Le Toan, T, Davidson, M, Mattia, F, Borderies, P, Chenerie, I, Manninen, T & Borgeaud, M 1999, 'Improved observation and modelling of bare soil surfaces for soil moisture retrieval', Earth Observation Quarterly, no. 62, pp. 20-24.

Improved observation and modelling of bare soil surfaces for soil moisture retrieval. / Le Toan, Thuy; Davidson, Malcolm; Mattia, Francesco; Borderies, Pierre; Chenerie, Isabelle; Manninen, Terhikki; Borgeaud, Maurice.

In: Earth Observation Quarterly, No. 62, 1999, p. 20-24.

Research output: Contribution to journalArticleScientific

TY - JOUR

T1 - Improved observation and modelling of bare soil surfaces for soil moisture retrieval

AU - Le Toan, Thuy

AU - Davidson, Malcolm

AU - Mattia, Francesco

AU - Borderies, Pierre

AU - Chenerie, Isabelle

AU - Manninen, Terhikki

AU - Borgeaud, Maurice

N1 - Project code: A6SU00646

PY - 1999

Y1 - 1999

N2 - Since the launch of ERS-1 in 1991, a number of studies have yielded experimental correlations between the observed radar backscatter and soil moisture prevalent at the time of the image acquisition. However at the same time these empirical results appear to be both site and time dependent and difficult to generalise unless the resolution is degraded in order to average out roughness influences. Surface roughness is known to play an important role in the scattering of electromagnetic waves from natural surfaces. The relative sensitivity of the radar backscatter to surface roughness compared to that of the soil moisture depends on the wave characteristics (frequency, polarisation, incidence) and on the geometric and dielectric properties of the soil surfaces.

AB - Since the launch of ERS-1 in 1991, a number of studies have yielded experimental correlations between the observed radar backscatter and soil moisture prevalent at the time of the image acquisition. However at the same time these empirical results appear to be both site and time dependent and difficult to generalise unless the resolution is degraded in order to average out roughness influences. Surface roughness is known to play an important role in the scattering of electromagnetic waves from natural surfaces. The relative sensitivity of the radar backscatter to surface roughness compared to that of the soil moisture depends on the wave characteristics (frequency, polarisation, incidence) and on the geometric and dielectric properties of the soil surfaces.

M3 - Article

SP - 20

EP - 24

JO - Earth Observation Quarterly

JF - Earth Observation Quarterly

SN - 0256-596X

IS - 62

ER -

Le Toan T, Davidson M, Mattia F, Borderies P, Chenerie I, Manninen T et al. Improved observation and modelling of bare soil surfaces for soil moisture retrieval. Earth Observation Quarterly. 1999;(62):20-24.