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Columbia University (2022)

Estimating ecosystem evaporation response to aridity with theory and causality

Massmann, Adam

Titre : Estimating ecosystem evaporation response to aridity with theory and causality

Auteur : Massmann, Adam

Université de soutenance : Columbia University

Grade : Doctor of Philosophy (PhD) 2022

Résumé partiel
This thesis estimates the ecosystem evaporation response to two forms of aridity : (1) atmospheric aridity in the form of vapor pressure deficit (Chapter 2), and (2) soil moisture aridity (Chapter 4). We also develop new methods to estimate the ecosystem response to aridity. For the response to atmospheric aridity (Chapter 2), we build a theoretical framework that allows us to derive an analytical expression for the ecosystem evaporation response to vapor pressure deficit with all environmental conditions held fixed (Chapter 2).

For the response to soil moisture aridity, we develop a method to estimate the response of evaporation to interventions on soil moisture using only passive data generated in a simulated reality (Chapter 4). To guide the development of this data-driven approach, we review and analyze causal inference’s applications in the Earth system, considering generic scenarios that are applicable to the land-atmosphere system as well as many other subdomains of the Earth system (Chapter 3).

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Page publiée le 17 mars 2023