Vegetation Warming and Greenness Decline across Amazonia during the Extreme Drought of 2023-Reference-Cited by-同舟云学术

Vegetation Warming and Greenness Decline across Amazonia during the Extreme Drought of 2023

Published:2024-07-09 Issue:14 Volume:16 Page:2519
ISSN:2072-4292
Container-title:Remote Sensing
language:en
Short-container-title:Remote Sensing

Author:

Jiménez Juan Carlos¹^ORCID,Miranda Vitor¹²^ORCID,Trigo Isabel²³^ORCID,Libonati Renata³⁴^ORCID,Albuquerque Ronaldo⁴^ORCID,Peres Leonardo F.⁴^ORCID,Espinoza Jhan-Carlo⁵⁶,Marengo José Antonio⁷⁸⁹^ORCID

Affiliation:

1. Global Change Unit (GCU) of the Image Processing Laboratory (IPL), Universitat de València Estudi General (UVEG), C/Catedrático José Beltrán 2, 46980 Paterna, Valencia, Spain

2. Earth Observation Unit, Portuguese Institute of Sea and Atmosphere, 1749-077 Lisbon, Portugal

3. Instituto Dom Luiz (IDL), University of Lisbon, Campo Grande, 1749-016 Lisbon, Portugal

4. Instituto de Geociências (IGEO), Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-909, RJ, Brazil

5. Institut des Géosciences de l’Environnement, Université Grenoble Alpes, IRD, CNRS, 70 Rue de la Physique, Bat. OSUG-B. Domaine Universitaire, 38400 Saint Martin d’Hères, France

6. Instituto de Investigación Sobre la Enseñanza de las Matemáticas, Pontificia Universidad Católica del Perú, Lima 15088, Peru

7. National Centre for Monitoring and Early Warning of Natural Disasters (CEMADEN), Estrada Doutor Altino Bondesan, 500—Distrito de Eugênio de Melo, São José dos Campos 12247-060, SP, Brazil

8. Institute of Science and Technology, São Paulo State University (UNESP), São José dos Campos 12247-004, SP, Brazil

9. Graduate School of International Studies, Korea University, Seoul 02841, Republic of Korea

Abstract

In 2023, most parts of the world experienced exceptional heat. In particular, anomalous warm temperatures and heatwave events were evidenced across South America during the second half of the year. The situation was particularly critical in the Amazon region in terms of not only hydrometeorological drought but also ecological and socioeconomic impacts. In this study, remote-sensing data collected from the Moderate Resolution Imaging Spectroradiometer (MODIS) were used to observe the changes in temperature and vegetation across Amazonia during the exceptional drought of 2023. This analysis was based on anomalies in the land surface temperature (LST) and vegetation indices: the enhanced vegetation index (EVI) and the normalized difference vegetation index (NDVI). The amplitude of the LST (AMP-LST), an indicator of the energy partitioning between the latent and sensible heat flux, and fire counts were also considered. The results show widespread and extreme warming across Amazonia during the austral spring in 2023, accompanied by a decline in vegetation greenness, water stress conditions across northern Amazonia, and an enhanced fire occurrence across central and northern Amazonia.

Publisher

MDPI AG

Link

https://www.mdpi.com/2072-4292/16/14/2519/pdf

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