SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products

In this article, L-band vegetation optical depth (L-VOD) retrieved by Soil Moisture and Ocean Salinity (SMOS) in four large continents is compared against vegetation parameters (RH100 and PAI) retrieved by Global Ecosystem Dynamics Investigation (GEDI) LIDAR instrument, recently launched by NASA. In...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Cristina Vittucci, Leila Guerriero, Paolo Ferrazzoli, Philippe Richaume, Yann H. Kerr
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	LIDAR microwave radiometry vegetation height vegetation optical depth Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809
Acceso en línea:	https://doaj.org/article/5f5d4d646d62428180aeaedcb26ea06a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:5f5d4d646d62428180aeaedcb26ea06a
record_format	dspace
spelling	oai:doaj.org-article:5f5d4d646d62428180aeaedcb26ea06a2021-12-03T00:00:18ZSMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products2151-153510.1109/JSTARS.2021.3128022https://doaj.org/article/5f5d4d646d62428180aeaedcb26ea06a2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9615019/https://doaj.org/toc/2151-1535In this article, L-band vegetation optical depth (L-VOD) retrieved by Soil Moisture and Ocean Salinity (SMOS) in four large continents is compared against vegetation parameters (RH100 and PAI) retrieved by Global Ecosystem Dynamics Investigation (GEDI) LIDAR instrument, recently launched by NASA. In order to manage the different spatial resolutions, GEDI parameters were averaged within SMOS pixels and a threshold to the minimum number of GEDI samples per SMOS pixel was applied. Spatial correlations between monthly averages were investigated from May 2019 to April 2020. For continents mostly covered by tropical vegetation (Africa and South America), the Pearson correlation coefficients between L-VOD and RH100 are higher than 0.8 in all months of the year. Conversely, seasonal effects are observed in North America and Asia, producing a lower correlation in colder months. RMS differences between L-VODs retrieved by SMOS and the ones obtained using a linear regression over RH100 are lower than 0.2 for all cases, and close to 0.1 for most cases. Using PAI in place of RH100 slightly lower spatial correlations are generally achieved. Overall, the obtained results confirm the good potential of L-VOD to monitor vegetation height in different environments.Cristina VittucciLeila GuerrieroPaolo FerrazzoliPhilippe RichaumeYann H. KerrIEEEarticleLIDARmicrowave radiometryvegetation heightvegetation optical depthOcean engineeringTC1501-1800Geophysics. Cosmic physicsQC801-809ENIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 11870-11878 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	LIDAR microwave radiometry vegetation height vegetation optical depth Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809
spellingShingle	LIDAR microwave radiometry vegetation height vegetation optical depth Ocean engineering TC1501-1800 Geophysics. Cosmic physics QC801-809 Cristina Vittucci Leila Guerriero Paolo Ferrazzoli Philippe Richaume Yann H. Kerr SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products
description	In this article, L-band vegetation optical depth (L-VOD) retrieved by Soil Moisture and Ocean Salinity (SMOS) in four large continents is compared against vegetation parameters (RH100 and PAI) retrieved by Global Ecosystem Dynamics Investigation (GEDI) LIDAR instrument, recently launched by NASA. In order to manage the different spatial resolutions, GEDI parameters were averaged within SMOS pixels and a threshold to the minimum number of GEDI samples per SMOS pixel was applied. Spatial correlations between monthly averages were investigated from May 2019 to April 2020. For continents mostly covered by tropical vegetation (Africa and South America), the Pearson correlation coefficients between L-VOD and RH100 are higher than 0.8 in all months of the year. Conversely, seasonal effects are observed in North America and Asia, producing a lower correlation in colder months. RMS differences between L-VODs retrieved by SMOS and the ones obtained using a linear regression over RH100 are lower than 0.2 for all cases, and close to 0.1 for most cases. Using PAI in place of RH100 slightly lower spatial correlations are generally achieved. Overall, the obtained results confirm the good potential of L-VOD to monitor vegetation height in different environments.
format	article
author	Cristina Vittucci Leila Guerriero Paolo Ferrazzoli Philippe Richaume Yann H. Kerr
author_facet	Cristina Vittucci Leila Guerriero Paolo Ferrazzoli Philippe Richaume Yann H. Kerr
author_sort	Cristina Vittucci
title	SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products
title_short	SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products
title_full	SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products
title_fullStr	SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products
title_full_unstemmed	SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products
title_sort	smos l-vod retrieved by level 2 algorithm and its correlation with gedi lidar products
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/5f5d4d646d62428180aeaedcb26ea06a
work_keys_str_mv	AT cristinavittucci smoslvodretrievedbylevel2algorithmanditscorrelationwithgedilidarproducts AT leilaguerriero smoslvodretrievedbylevel2algorithmanditscorrelationwithgedilidarproducts AT paoloferrazzoli smoslvodretrievedbylevel2algorithmanditscorrelationwithgedilidarproducts AT philipperichaume smoslvodretrievedbylevel2algorithmanditscorrelationwithgedilidarproducts AT yannhkerr smoslvodretrievedbylevel2algorithmanditscorrelationwithgedilidarproducts
_version_	1718373989578964992

SMOS L-VOD Retrieved by Level 2 Algorithm and its Correlation With GEDI LIDAR Products

Ejemplares similares