scholarly journals A regional climate model study of how biomass burning aerosol impacts land-atmosphere interactions over the Amazon

2008 ◽  
Vol 113 (D14) ◽  
Author(s):  
Yan Zhang ◽  
Rong Fu ◽  
Hongbin Yu ◽  
Robert E. Dickinson ◽  
Robinson Negron Juarez ◽  
...  
Keyword(s):  
Regional Climate Model ◽  
Biomass Burning ◽  
Climate Model ◽  
Regional Climate ◽  
Model Study ◽  
Biomass Burning Aerosol

scholarly journals IMPACTS OF LAND COVER AND GREENHOUSE GAS (GHG) CONCENTRATION CHANGES ON THE HYDROLOGICAL CYCLE IN AMAZON BASIN: A REGIONAL CLIMATE MODEL STUDY

2015 ◽  
Vol 15 ◽  
Author(s):  
Vinícius Machado Rocha ◽  
Francis Wagner Silva Correia ◽  
Prakki Satyamurty ◽  
Saulo Ribeiro De Freitas ◽  
Demerval Soares Moreira ◽  
...  
Keyword(s):  
Land Cover ◽  
Regional Climate Model ◽  
Greenhouse Gas ◽  
Amazon Basin ◽  
Climate Model ◽  
Hydrological Cycle ◽  
Regional Climate ◽  
Model Study ◽  
Concentration Changes

scholarly journals The biomass burning aerosol influence on precipitation over the Central Amazon: an observational study

2014 ◽  
Vol 14 (13) ◽  
pp. 18879-18904 ◽  
Author(s):  
W. A. Gonçalves ◽  
L. A. T. Machado ◽  
P.-E. Kirstetter
Keyword(s):  
Biomass Burning ◽  
Climate Model ◽  
Regional Climate ◽  
Droplet Size Distribution ◽  
Particulate Material ◽  
Climate Change Scenarios ◽  
Aggregate Information ◽  
Wet Scavenging ◽  
Biomass Burning Aerosol ◽  
Climate Model Simulations

Abstract. Understanding the aerosol influence on clouds and precipitation is an important key to reduce uncertainties in simulations of climate change scenarios with regards to deforestation fires. Here, we associate rainfall characteristics obtained by an S-Band radar in the Amazon with in situ measurements of biomass burning aerosols for the entire year of 2009. The most important results were obtained during the dry semester (July–December). The results indicate that the aerosol influence on precipitating systems is modulated by the atmospheric instability degree. For stable atmospheres, the higher the aerosol concentration, the lower the precipitation over the region. On the other hand, for unstable cases, higher concentrations of particulate material are associated with more precipitation, elevated presence of ice and larger rain cells, which suggests an association with long lived systems. The results presented were statistically significant. However, due to the limitation imposed by the dataset used, some important features such as wet scavenging and droplet size distribution need further clarification. Regional climate model simulations in addition with new field campaigns could aggregate information to the aerosol/precipitation relationship.

A Regional Climate Model Study of the Scale Dependence of Cloud-Radiation Interactions

1996 ◽  
Vol 9 (6) ◽  
pp. 1221-1234 ◽  
Author(s):  
Michael P. Dudek ◽  
Xin-Zhong Liang ◽  
Wei-Chyung Wang
Keyword(s):  
Regional Climate Model ◽  
Climate Model ◽  
Regional Climate ◽  
Scale Dependence ◽  
Model Study

scholarly journals Influence of biomass aerosol on precipitation over the Central Amazon: an observational study

2015 ◽  
Vol 15 (12) ◽  
pp. 6789-6800 ◽  
Author(s):  
W. A. Gonçalves ◽  
L. A. T. Machado ◽  
P.-E. Kirstetter
Keyword(s):  
Biomass Burning ◽  
Climate Model ◽  
Regional Climate ◽  
Climate Change Scenarios ◽  
Data Set ◽  
Biomass Burning Aerosol ◽  
Radar Measurements ◽  
Climate Model Simulations ◽  
Ice Content

Abstract. Understanding the influence of biomass burning aerosol on clouds and precipitation in the Amazon is key to reducing uncertainties in simulations of climate change scenarios with regard to deforestation fires. Here, we associate rainfall characteristics obtained from an S-band radar in the Amazon with in situ measurements of biomass burning aerosol for the entire year of 2009. The most important results were obtained during the dry season (July–December). The results indicate that the influence of aerosol on precipitating systems is modulated by the atmospheric degree of instability. For less unstable atmospheres, the higher the aerosol concentration is, the lower the precipitation is over the region. In contrast, for more unstable cases, higher concentrations of black carbon are associated with greater precipitation, increased ice content, and larger rain cells; this finding suggests an association with long-lived systems. The results presented are statistically significant. However, due to limitations imposed by the available data set, important features, such as the contribution of each mechanism to the rainfall suppression, need further investigation. Regional climate model simulations with aircraft and radar measurements would help clarify these questions.

Adapting to Climate Change: A Regional Climate Model Study of the Caucasus

2012 ◽  
Author(s):  
Hannah Nissan ◽  
Jim Clarke ◽  
Shirley Oliveira ◽  
Ralf Toumi
Keyword(s):  
Climate Change ◽  
Regional Climate Model ◽  
Climate Model ◽  
Regional Climate ◽  
The Caucasus ◽  
Model Study
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