Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine
Vegetation indices (VI) describe vegetation structure and functioning but they are affected by illumination conditions (IC). Moreover, the fact that the effect of the IC on VI can be stronger than other biophysical or seasonal processes is under debate. Using Google Earth Engine and the latest Landsat Surface Reflectance level 1 data, we evaluated the temporal patterns of IC and two VI, the Normalized Difference Vegetation Index (NDVI) and the Enhanced Vegetation Index (EVI) in a mountainous tropical forest during the years 1984–2017. We evaluated IC and VI at different times, their relationship with the topography and the correlations between them. We show that IC is useful for understanding the patterns of variation between VI and IC at the pixel level using Landsat sensors. Our findings confirmed a strong correlation between EVI and IC and less between NDVI and IC. We found a significant increase in IC, EVI, and NDVI throughout time due to an improvement in the position of all Landsat sensors. Our results reinforce the need to consider IC to interpret VI over long periods using Landsat data in order to increase the precision of monitoring VI in irregular topography.
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Subjects: | F70 - Taxonomie végétale et phytogéographie, P01 - Conservation de la nature et ressources foncières, U30 - Méthodes de recherche, couvert, indice de végétation, télédétection, Landsat, Réflectance, imagerie par satellite, topographie, http://aims.fao.org/aos/agrovoc/c_1262, http://aims.fao.org/aos/agrovoc/c_9000171, http://aims.fao.org/aos/agrovoc/c_6498, http://aims.fao.org/aos/agrovoc/c_36766, http://aims.fao.org/aos/agrovoc/c_28538, http://aims.fao.org/aos/agrovoc/c_36761, http://aims.fao.org/aos/agrovoc/c_7815, http://aims.fao.org/aos/agrovoc/c_1920, |
Online Access: | http://agritrop.cirad.fr/594714/ http://agritrop.cirad.fr/594714/1/Martin-Sibelet_2020_Patterns-Illuminations-GEngine.pdf |
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dig-cirad-fr-5947142024-01-29T02:32:16Z http://agritrop.cirad.fr/594714/ http://agritrop.cirad.fr/594714/ Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine. Martín-Ortega Pablo, García-Montero Luis Gonzaga, Sibelet Nicole. 2020. Remote Sensing, 12 (2):211, 17 p.https://doi.org/10.3390/rs12020211 <https://doi.org/10.3390/rs12020211> Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine Martín-Ortega, Pablo García-Montero, Luis Gonzaga Sibelet, Nicole eng 2020 Remote Sensing F70 - Taxonomie végétale et phytogéographie P01 - Conservation de la nature et ressources foncières U30 - Méthodes de recherche couvert indice de végétation télédétection Landsat Réflectance imagerie par satellite topographie http://aims.fao.org/aos/agrovoc/c_1262 http://aims.fao.org/aos/agrovoc/c_9000171 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_36766 http://aims.fao.org/aos/agrovoc/c_28538 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_7815 Costa Rica http://aims.fao.org/aos/agrovoc/c_1920 Vegetation indices (VI) describe vegetation structure and functioning but they are affected by illumination conditions (IC). Moreover, the fact that the effect of the IC on VI can be stronger than other biophysical or seasonal processes is under debate. Using Google Earth Engine and the latest Landsat Surface Reflectance level 1 data, we evaluated the temporal patterns of IC and two VI, the Normalized Difference Vegetation Index (NDVI) and the Enhanced Vegetation Index (EVI) in a mountainous tropical forest during the years 1984–2017. We evaluated IC and VI at different times, their relationship with the topography and the correlations between them. We show that IC is useful for understanding the patterns of variation between VI and IC at the pixel level using Landsat sensors. Our findings confirmed a strong correlation between EVI and IC and less between NDVI and IC. We found a significant increase in IC, EVI, and NDVI throughout time due to an improvement in the position of all Landsat sensors. Our results reinforce the need to consider IC to interpret VI over long periods using Landsat data in order to increase the precision of monitoring VI in irregular topography. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/594714/1/Martin-Sibelet_2020_Patterns-Illuminations-GEngine.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.3390/rs12020211 10.3390/rs12020211 info:eu-repo/semantics/altIdentifier/doi/10.3390/rs12020211 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.3390/rs12020211 |
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F70 - Taxonomie végétale et phytogéographie P01 - Conservation de la nature et ressources foncières U30 - Méthodes de recherche couvert indice de végétation télédétection Landsat Réflectance imagerie par satellite topographie http://aims.fao.org/aos/agrovoc/c_1262 http://aims.fao.org/aos/agrovoc/c_9000171 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_36766 http://aims.fao.org/aos/agrovoc/c_28538 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_7815 http://aims.fao.org/aos/agrovoc/c_1920 F70 - Taxonomie végétale et phytogéographie P01 - Conservation de la nature et ressources foncières U30 - Méthodes de recherche couvert indice de végétation télédétection Landsat Réflectance imagerie par satellite topographie http://aims.fao.org/aos/agrovoc/c_1262 http://aims.fao.org/aos/agrovoc/c_9000171 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_36766 http://aims.fao.org/aos/agrovoc/c_28538 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_7815 http://aims.fao.org/aos/agrovoc/c_1920 |
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F70 - Taxonomie végétale et phytogéographie P01 - Conservation de la nature et ressources foncières U30 - Méthodes de recherche couvert indice de végétation télédétection Landsat Réflectance imagerie par satellite topographie http://aims.fao.org/aos/agrovoc/c_1262 http://aims.fao.org/aos/agrovoc/c_9000171 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_36766 http://aims.fao.org/aos/agrovoc/c_28538 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_7815 http://aims.fao.org/aos/agrovoc/c_1920 F70 - Taxonomie végétale et phytogéographie P01 - Conservation de la nature et ressources foncières U30 - Méthodes de recherche couvert indice de végétation télédétection Landsat Réflectance imagerie par satellite topographie http://aims.fao.org/aos/agrovoc/c_1262 http://aims.fao.org/aos/agrovoc/c_9000171 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_36766 http://aims.fao.org/aos/agrovoc/c_28538 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_7815 http://aims.fao.org/aos/agrovoc/c_1920 Martín-Ortega, Pablo García-Montero, Luis Gonzaga Sibelet, Nicole Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine |
description |
Vegetation indices (VI) describe vegetation structure and functioning but they are affected by illumination conditions (IC). Moreover, the fact that the effect of the IC on VI can be stronger than other biophysical or seasonal processes is under debate. Using Google Earth Engine and the latest Landsat Surface Reflectance level 1 data, we evaluated the temporal patterns of IC and two VI, the Normalized Difference Vegetation Index (NDVI) and the Enhanced Vegetation Index (EVI) in a mountainous tropical forest during the years 1984–2017. We evaluated IC and VI at different times, their relationship with the topography and the correlations between them. We show that IC is useful for understanding the patterns of variation between VI and IC at the pixel level using Landsat sensors. Our findings confirmed a strong correlation between EVI and IC and less between NDVI and IC. We found a significant increase in IC, EVI, and NDVI throughout time due to an improvement in the position of all Landsat sensors. Our results reinforce the need to consider IC to interpret VI over long periods using Landsat data in order to increase the precision of monitoring VI in irregular topography. |
format |
article |
topic_facet |
F70 - Taxonomie végétale et phytogéographie P01 - Conservation de la nature et ressources foncières U30 - Méthodes de recherche couvert indice de végétation télédétection Landsat Réflectance imagerie par satellite topographie http://aims.fao.org/aos/agrovoc/c_1262 http://aims.fao.org/aos/agrovoc/c_9000171 http://aims.fao.org/aos/agrovoc/c_6498 http://aims.fao.org/aos/agrovoc/c_36766 http://aims.fao.org/aos/agrovoc/c_28538 http://aims.fao.org/aos/agrovoc/c_36761 http://aims.fao.org/aos/agrovoc/c_7815 http://aims.fao.org/aos/agrovoc/c_1920 |
author |
Martín-Ortega, Pablo García-Montero, Luis Gonzaga Sibelet, Nicole |
author_facet |
Martín-Ortega, Pablo García-Montero, Luis Gonzaga Sibelet, Nicole |
author_sort |
Martín-Ortega, Pablo |
title |
Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine |
title_short |
Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine |
title_full |
Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine |
title_fullStr |
Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine |
title_full_unstemmed |
Temporal patterns in illumination conditions and its effect on vegetation indices using Landsat on google earth engine |
title_sort |
temporal patterns in illumination conditions and its effect on vegetation indices using landsat on google earth engine |
url |
http://agritrop.cirad.fr/594714/ http://agritrop.cirad.fr/594714/1/Martin-Sibelet_2020_Patterns-Illuminations-GEngine.pdf |
work_keys_str_mv |
AT martinortegapablo temporalpatternsinilluminationconditionsanditseffectonvegetationindicesusinglandsatongoogleearthengine AT garciamonteroluisgonzaga temporalpatternsinilluminationconditionsanditseffectonvegetationindicesusinglandsatongoogleearthengine AT sibeletnicole temporalpatternsinilluminationconditionsanditseffectonvegetationindicesusinglandsatongoogleearthengine |
_version_ |
1792499886293254144 |