Estimation of Amazon Greenhouse Gas balances from atmospheric concentrations using inverse modelling of atmospheric transport

• Grant number: 18/14006-4
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: October 01, 2018
• End date: September 30, 2022
• Field of knowledge: Physical Sciences and Mathematics - Geosciences
• Principal Investigator: Luciana Vanni Gatti
• Grantee: Luana Santamaria Basso
• Host Institution: Instituto Nacional de Pesquisas Espaciais (INPE). Ministério da Ciência, Tecnologia e Inovação (Brasil). São José dos Campos , SP, Brazil
• Associated research grant: 16/02018-2 - Interannual variation of Amazon Basin greenhouse gas balances and their controls in a warming and increasingly variable climate – Carbam: the Amazon carbon balance long-term study, AP.PFPMCG.TEM
• Associated scholarship(s): 19/23654-2 - Estimation of Amazon greenhouse gas balances from atmospheric concentrations using inverse modelling of atmospheric transport with TOMCAT model, BE.EP.PD

Abstract

The scientific goal of this FAPESP proposal is to estimate greenhouse gas balances of the Amazon over a period of approximately one decade and to relate the observed inter-annual variation to climate anomalies, climate change and human alteration of the land surface, like e.g. deforestation. The relevance for this research is the concern about potential feedbacks of Amazonian forest changes on global climate and tropical South America's hydrological cycle, affecting not only the globe but also a large 'local' human population. Our main proposal follows an atmospheric approach towards answering the questions how Amazonian greenhouse gas balances change over time as a diagnostic of its state. In simple words this approach consists in measuring the lower to mid- troposphere greenhouse gas concentration fields above the basin along the main air-stream. From concentration gradients along the airstream - either accumulation or depletion - greenhouse gas fluxes can then be estimated. An increase in column content implies a source along the air-stream and vice versa. In broad terms the main air-stream consists of a loop starting with air entering the basin along the North-east coast of brazil from the East. Air masses then travel towards the Andes where they are being steered southwards by topography and finally deflected back towards the Atlantic along the Southern rim of the Amazon Basin. Clearly information on atmospheric transport rates and mixing are needed to make this approach rigorous, which can for example be provided by atmospheric air and air constituent transport models. The atmospheric sampling approach taken here is to sample the lower troposphere in full by sampling vertical profiles using aircraft.

Scientific publications

(6)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

GLOOR, M.; GATTI, V, L.; WILSON, C.; PARKER, R. J.; BOESCH, H.; POPA, E.; CHIPPERFIELD, M. P.; POULTER, B.; ZHANG, Z.; BASSO, L.; et al. Large Methane Emissions From the Pantanal During Rising Water-Levels Revealed by Regularly Measured Lower Troposphere CH4 Profiles. GLOBAL BIOGEOCHEMICAL CYCLES, v. 35, n. 10, OCT 2021. (18/14006-4, 19/23654-2)

COVEY, KRISTOFER; SOPER, FIONA; PANGALA, SUNITHA; BERNARDINO, ANGELO; PAGLIARO, ZOE; BASSO, LUANA; CASSOL, HENRIQUE; FEARNSIDE, PHILIP; NAVARRETE, DIEGO; NOVOA, SIDNEY; et al. Carbon and Beyond: The Biogeochemistry of Climate in a Rapidly Changing Amazon. FRONTIERS IN FORESTS AND GLOBAL CHANGE, v. 4, MAR 11 2021. (18/14006-4, 18/14423-4)

MATAVELI, GUILHERME A. V.; DE OLIVEIRA, GABRIEL; SEIXAS, HUGO T.; PEREIRA, GABRIEL; STARK, SCOTT C.; GATTI, LUCIANA V.; BASSO, LUANA S.; TEJADA, GRACIELA; CASSOL, HENRIQUE L. G.; ANDERSON, LIANA O.; et al. Relationship between Biomass Burning Emissions and Deforestation in Amazonia over the Last Two Decades. FORESTS, v. 12, n. 9, SEP 2021. (20/02656-4, 18/14006-4, 16/02018-2, 18/18493-7, 20/08916-8, 19/25701-8, 18/14423-4, 19/23654-2)

CASSOL, HENRIQUE L. G.; DOMINGUES, LUCAS G.; SANCHEZ, ALBER H.; BASSO, LUANA S.; MARANI, LUCIANO; TEJADA, GRACIELA; ARAI, EGIDIO; CORREIA, CAIO; ALDEN, CAROLINE B.; MILLER, JOHN B.; et al. Determination of Region of Influence Obtained by Aircraft Vertical Profiles Using the Density of Trajectories from the HYSPLIT Model. ATMOSPHERE, v. 11, n. 10, OCT 2020. (16/02018-2, 18/14006-4, 18/14423-4, 18/18493-7)

BASSO, LUANA S.; MARANI, LUCIANO; GATTI, V, LUCIANA; MILLER, JOHN B.; GLOOR, MANUEL; MELACK, JOHN; CASSOL, HENRIQUE L. G.; TEJADA, GRACIELA; DOMINGUES, LUCAS G.; ARAI, EGIDIO; et al. Amazon methane budget derived from multi-year airborne observations highlights regional variations in emissions. COMMUNICATIONS EARTH & ENVIRONMENT, v. 2, n. 1, NOV 29 2021. (08/58120-3, 20/02656-4, 18/14423-4, 11/51841-0, 19/23654-2, 18/14006-4, 16/02018-2, 19/21789-8, 11/17914-0, 18/18493-7)

TEJADA, GRACIELA; GATTI, LUCIANA V.; BASSO, LUANA S.; CASSOL, HENRIQUE L. G.; SILVA-JUNIOR, CELSO H. L.; MATAVELI, GUILHERME; MARANI, LUCIANO; ARAI, EGIDIO; GLOOR, MANUEL; MILLER, JOHN B.; et al. CO₂ emissions in the Amazon: are bottom-up estimates from land use and cover datasets consistent with top-down estimates based on atmospheric measurements?. FRONTIERS IN FORESTS AND GLOBAL CHANGE, v. 6, p. 15-pg., 2023-08-23. (18/14006-4, 18/18493-7, 16/02018-2, 19/25701-8)