The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation
International audience During the last decade there has been considerable development in remote sensing techniques relating to soil moisture retrievals over large areas. Within the framework of the European Space Agency's (ESA) Climate Change Initiative (CCI) a new soil moisture product has bee...
Published in: | Geoscientific Instrumentation, Methods and Data Systems |
---|---|
Main Authors: | , , , , , , |
Other Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2016
|
Subjects: | |
Online Access: | https://insu.hal.science/insu-03668260 https://insu.hal.science/insu-03668260/document https://insu.hal.science/insu-03668260/file/gi-5-95-2016.pdf https://doi.org/10.5194/gi-5-95-2016 |
id |
ftinsu:oai:HAL:insu-03668260v1 |
---|---|
record_format |
openpolar |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Ikonen, Jaakko Vehviläinen, Juho Rautiainen, Kimmo Smolander, Tuomo Lemmetyinen, Juha Bircher, Simone Pulliainen, Jouni The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience During the last decade there has been considerable development in remote sensing techniques relating to soil moisture retrievals over large areas. Within the framework of the European Space Agency's (ESA) Climate Change Initiative (CCI) a new soil moisture product has been generated, merging different satellite-based surface soil moisture based products. Such remotely sensed data need to be validated by means of in situ observations in different climatic regions. In that context, a comprehensive, distributed network of in situ measurement stations gathering information on soil moisture, as well as soil temperature, has been set up in recent years at the Finnish Meteorological Institute's (FMI) Sodankylä Arctic research station. The network forms a calibration and validation (CAL-VAL) reference site and is used as a tool to evaluate the validity of satellite retrievals of soil properties. In this paper we present the Sodankylä CAL-VAL reference site soil moisture observation network, its instrumentation as well as its areal representativeness over the study area and the region in general as a whole. As an example of data utilization, comparisons of spatially weighted average top-layer soil moisture observations between the years 2012 and 2014 against ESA CCI soil moisture data product estimates are presented and discussed. The comparisons were made against a single ESA CCI data product pixel encapsulating most of the Sodankylä CAL-VAL network sites. Comparisons are made with daily averaged and running weekly averaged soil moisture data as well as through application of an exponential soil moisture filter. The overall achieved correlation between the ESA CCI data product and in situ observations varies considerably (from 0.479 to 0.637) depending on the applied comparison perspective. Similarly, depending on the comparison perspective used, inter-annual correlation comparison results exhibit even more pronounced variation, ranging from 0.166 to 0.840. |
author2 |
Centre d'études spatiales de la biosphère (CESBIO) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) |
format |
Article in Journal/Newspaper |
author |
Ikonen, Jaakko Vehviläinen, Juho Rautiainen, Kimmo Smolander, Tuomo Lemmetyinen, Juha Bircher, Simone Pulliainen, Jouni |
author_facet |
Ikonen, Jaakko Vehviläinen, Juho Rautiainen, Kimmo Smolander, Tuomo Lemmetyinen, Juha Bircher, Simone Pulliainen, Jouni |
author_sort |
Ikonen, Jaakko |
title |
The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation |
title_short |
The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation |
title_full |
The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation |
title_fullStr |
The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation |
title_full_unstemmed |
The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation |
title_sort |
sodankylä in situ soil moisture observation network: an example application of esa cci soil moisture product evaluation |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://insu.hal.science/insu-03668260 https://insu.hal.science/insu-03668260/document https://insu.hal.science/insu-03668260/file/gi-5-95-2016.pdf https://doi.org/10.5194/gi-5-95-2016 |
long_lat |
ENVELOPE(26.600,26.600,67.417,67.417) |
geographic |
Arctic Sodankylä |
geographic_facet |
Arctic Sodankylä |
genre |
Arctic Climate change Sodankylä |
genre_facet |
Arctic Climate change Sodankylä |
op_source |
Geoscientific Instrumentation, Methods and Data Systems https://insu.hal.science/insu-03668260 Geoscientific Instrumentation, Methods and Data Systems, 2016, 5, pp.95-108. ⟨10.5194/gi-5-95-2016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/gi-5-95-2016 insu-03668260 https://insu.hal.science/insu-03668260 https://insu.hal.science/insu-03668260/document https://insu.hal.science/insu-03668260/file/gi-5-95-2016.pdf BIBCODE: 2016GI.5.95I doi:10.5194/gi-5-95-2016 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/gi-5-95-2016 |
container_title |
Geoscientific Instrumentation, Methods and Data Systems |
container_volume |
5 |
container_issue |
1 |
container_start_page |
95 |
op_container_end_page |
108 |
_version_ |
1785578327135748096 |
spelling |
ftinsu:oai:HAL:insu-03668260v1 2023-12-17T10:26:36+01:00 The Sodankylä in situ soil moisture observation network: an example application of ESA CCI soil moisture product evaluation Ikonen, Jaakko Vehviläinen, Juho Rautiainen, Kimmo Smolander, Tuomo Lemmetyinen, Juha Bircher, Simone Pulliainen, Jouni Centre d'études spatiales de la biosphère (CESBIO) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE) 2016 https://insu.hal.science/insu-03668260 https://insu.hal.science/insu-03668260/document https://insu.hal.science/insu-03668260/file/gi-5-95-2016.pdf https://doi.org/10.5194/gi-5-95-2016 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.5194/gi-5-95-2016 insu-03668260 https://insu.hal.science/insu-03668260 https://insu.hal.science/insu-03668260/document https://insu.hal.science/insu-03668260/file/gi-5-95-2016.pdf BIBCODE: 2016GI.5.95I doi:10.5194/gi-5-95-2016 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess Geoscientific Instrumentation, Methods and Data Systems https://insu.hal.science/insu-03668260 Geoscientific Instrumentation, Methods and Data Systems, 2016, 5, pp.95-108. ⟨10.5194/gi-5-95-2016⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2016 ftinsu https://doi.org/10.5194/gi-5-95-2016 2023-11-22T17:31:35Z International audience During the last decade there has been considerable development in remote sensing techniques relating to soil moisture retrievals over large areas. Within the framework of the European Space Agency's (ESA) Climate Change Initiative (CCI) a new soil moisture product has been generated, merging different satellite-based surface soil moisture based products. Such remotely sensed data need to be validated by means of in situ observations in different climatic regions. In that context, a comprehensive, distributed network of in situ measurement stations gathering information on soil moisture, as well as soil temperature, has been set up in recent years at the Finnish Meteorological Institute's (FMI) Sodankylä Arctic research station. The network forms a calibration and validation (CAL-VAL) reference site and is used as a tool to evaluate the validity of satellite retrievals of soil properties. In this paper we present the Sodankylä CAL-VAL reference site soil moisture observation network, its instrumentation as well as its areal representativeness over the study area and the region in general as a whole. As an example of data utilization, comparisons of spatially weighted average top-layer soil moisture observations between the years 2012 and 2014 against ESA CCI soil moisture data product estimates are presented and discussed. The comparisons were made against a single ESA CCI data product pixel encapsulating most of the Sodankylä CAL-VAL network sites. Comparisons are made with daily averaged and running weekly averaged soil moisture data as well as through application of an exponential soil moisture filter. The overall achieved correlation between the ESA CCI data product and in situ observations varies considerably (from 0.479 to 0.637) depending on the applied comparison perspective. Similarly, depending on the comparison perspective used, inter-annual correlation comparison results exhibit even more pronounced variation, ranging from 0.166 to 0.840. Article in Journal/Newspaper Arctic Climate change Sodankylä Institut national des sciences de l'Univers: HAL-INSU Arctic Sodankylä ENVELOPE(26.600,26.600,67.417,67.417) Geoscientific Instrumentation, Methods and Data Systems 5 1 95 108 |