Land–atmosphere interactions in the tropics – a review

Pierre Gentine*, Adam Massmann, Benjamin R. Lintner, Sayed Hamed Alemohammad, Rong Fu, Julia K. Green, Daniel Kennedy, Jordi Vilà-Guerau De Arellano

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

The continental tropics play a leading role in the terrestrial energy, water, and carbon cycles. Land–atmosphere interactions are integral in the regulation of these fluxes across multiple spatial and temporal scales over tropical continents. We review here some of the important characteristics of tropical continental climates and how land–atmosphere interactions regulate them. Along with a wide range of climates, the tropics manifest a diverse array of land–atmosphere interactions. Broadly speaking, in tropical rainforest climates, light and energy are typically more limiting than precipitation and water supply for photosynthesis and evapotranspiration (ET), whereas in savanna and semi-arid climates, water is the critical regulator of surface fluxes and land–atmosphere interactions. We discuss the impact of the land surface, how it affects shallow and deep clouds, and how these clouds in turn can feed back to the surface by modulating surface radiation and precipitation. Some results from recent research suggest that shallow clouds may be especially critical to land–atmosphere interactions. On the other hand, the impact of land-surface conditions on deep convection appears to occur over larger, nonlocal scales and may be a more relevant land–atmosphere feedback mechanism in transitional dry-to-wet regions and climate regimes.
Original languageEnglish
Pages (from-to)4171-4197
JournalHydrology and Earth System Sciences
Volume23
Issue number10
DOIs
Publication statusPublished - 17 Oct 2019

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climate
land surface
feedback mechanism
surface flux
carbon cycle
rainforest
savanna
energy
evapotranspiration
photosynthesis
water supply
convection
water
tropics
continent
radiation
continental climate
regulation

Cite this

Gentine, P., Massmann, A., Lintner, B. R., Hamed Alemohammad, S., Fu, R., Green, J. K., ... Vilà-Guerau De Arellano, J. (2019). Land–atmosphere interactions in the tropics – a review. Hydrology and Earth System Sciences, 23(10), 4171-4197. https://doi.org/10.5194/hess-23-4171-2019
Gentine, Pierre ; Massmann, Adam ; Lintner, Benjamin R. ; Hamed Alemohammad, Sayed ; Fu, Rong ; Green, Julia K. ; Kennedy, Daniel ; Vilà-Guerau De Arellano, Jordi. / Land–atmosphere interactions in the tropics – a review. In: Hydrology and Earth System Sciences. 2019 ; Vol. 23, No. 10. pp. 4171-4197.
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Gentine, P, Massmann, A, Lintner, BR, Hamed Alemohammad, S, Fu, R, Green, JK, Kennedy, D & Vilà-Guerau De Arellano, J 2019, 'Land–atmosphere interactions in the tropics – a review', Hydrology and Earth System Sciences, vol. 23, no. 10, pp. 4171-4197. https://doi.org/10.5194/hess-23-4171-2019

Land–atmosphere interactions in the tropics – a review. / Gentine, Pierre; Massmann, Adam; Lintner, Benjamin R.; Hamed Alemohammad, Sayed; Fu, Rong; Green, Julia K.; Kennedy, Daniel; Vilà-Guerau De Arellano, Jordi.

In: Hydrology and Earth System Sciences, Vol. 23, No. 10, 17.10.2019, p. 4171-4197.

Research output: Contribution to journalArticleAcademicpeer-review

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AB - The continental tropics play a leading role in the terrestrial energy, water, and carbon cycles. Land–atmosphere interactions are integral in the regulation of these fluxes across multiple spatial and temporal scales over tropical continents. We review here some of the important characteristics of tropical continental climates and how land–atmosphere interactions regulate them. Along with a wide range of climates, the tropics manifest a diverse array of land–atmosphere interactions. Broadly speaking, in tropical rainforest climates, light and energy are typically more limiting than precipitation and water supply for photosynthesis and evapotranspiration (ET), whereas in savanna and semi-arid climates, water is the critical regulator of surface fluxes and land–atmosphere interactions. We discuss the impact of the land surface, how it affects shallow and deep clouds, and how these clouds in turn can feed back to the surface by modulating surface radiation and precipitation. Some results from recent research suggest that shallow clouds may be especially critical to land–atmosphere interactions. On the other hand, the impact of land-surface conditions on deep convection appears to occur over larger, nonlocal scales and may be a more relevant land–atmosphere feedback mechanism in transitional dry-to-wet regions and climate regimes.

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Gentine P, Massmann A, Lintner BR, Hamed Alemohammad S, Fu R, Green JK et al. Land–atmosphere interactions in the tropics – a review. Hydrology and Earth System Sciences. 2019 Oct 17;23(10):4171-4197. https://doi.org/10.5194/hess-23-4171-2019