Effects of Tropical Deforestation on Surface Energy Balance Partitioning in Southeastern Amazonia Estimated From Maximum Convective Power

3 de abril de 2019

abr 3, 2019

Luigi Conte, Maik Renner, Paulo Brando, Claudinei Oliveira dos Santos, Divino Silvério, Olaf Kolle, Susan E. Trumbore, Axel Kleidon

To understand changes in land surface energy balance partitioning due to tropical deforestation, we use a physically based analytical formulation of the surface energy balance. Turbulent heat fluxes are constrained by the thermodynamic maximum power limit and a formulation for diurnal heat redistribution within the land-atmosphere system. The derived turbulent fluxes of sensible and latent heat compare very well to in situ observations for sites with intact rainforest and soybean land cover in southeastern Amazonia. The equilibrium partitioning into sensible and latent heat flux compares well with observations for both sites, except for the soybean site during the dry season where water limitation needs to be explicitly accounted for. Our results show that tropical deforestation primarily affects the absorption of solar radiation and the water limitation of evapotranspiration, but not the overall magnitude of turbulent heat fluxes that is set by the thermodynamic maximum power limit.

 

Baixar (sujeito à disponibilidade)

Download (subject to availability)



Este projeto está alinhado aos Objetivos de Desenvolvimento Sustentável (ODS).

Saiba mais em brasil.un.org/pt-br/sdgs.

Veja também

See also

Modeling the effects of throughfall reduction on soil water content in a Brazilian Oxisol under a moist tropical forest

Modeling the effects of throughfall reduction on soil water content in a Brazilian Oxisol under a moist tropical forest

Access to water reserves in deep soil during drought periods determines whether ornot the tropical moist forests of Amazonia will be buffered from the deleterious effectsof water deficits. Changing climatic conditions are predicted to increase periods of droughtin...

Amazônia em Pauta 3: Rural Environment Registry (CAR) and its influence on the dynamics of deforestation in the Legal Amazon

Amazônia em Pauta 3: Rural Environment Registry (CAR) and its influence on the dynamics of deforestation in the Legal Amazon

On May 25th, 2012, after almost two years of discussions in Congress, a new version of the Brazilian Forest Code was approved (Law 12.651/2012). The new law reaffirmed important norms for forest conservation in all the Brazilian biomes. It also established...

Posição comum em escala de REDD+

Posição comum em escala de REDD+

O IPAM, juntamente com suas instituições parceiras: Conservação Internacional, Environmental Defense Fund, Woods Hole Research Center e The Nature Conservancy, produziu quatro documentos de posições comuns sobre aspectos da política de REDD. Este é sobre a Posição Comum em Escala de REDD+.