Redirigiendo al acceso original de articulo en 20 segundos...
Inicio  /  Atmosphere  /  Vol: 9 Núm: 10 Par: October (2018)  /  Artículo
ARTÍCULO
TITULO

The Impacts of Smoke Emitted from Boreal Forest Wildfires on the High Latitude Radiative Energy Budget?A Case Study of the 2002 Yakutsk Wildfires

Zheng Lu and Irina N. Sokolik    

Resumen

We examine the 2002 Yakutsk wildfire event and simulate the impacts of smoke aerosols on local radiative energy budget, using the WRF-Chem-SMOKE model. When comparing satellite retrievals (the Surface Radiation Budget (SRB) dataset) with model simulations, we found that the agreement is generally good, except for the regions where the model predicts too few clouds or SRB misclassifies strong smoke plumes as clouds. We also found that the smoke-induced changes in upward shortwave fluxes at top of atmosphere (TOA) vary under different burning and meteorological conditions. In the first period of the fire season (9–12 August), smoke particles cause a warming effect around 3 W/m2, mainly through functioning as ice nuclei, which deplete the cloud water amount in the frontal system. At the beginning of the second period of the fire season (19–20 August), large amounts of pre-existing smoke particles cause a strong cooling effect of −8 W/m2. This is offset by the warming effect caused by relatively small amounts of cloud condensation nuclei increases, which promotes the rain formation and depletes the cloud water amount. After the cloud decks are well mixed with smoke plumes (21–22 August), the first indirect and direct effects of smoke together lead to a cooling of −10 W/m2. These results highlight the importance of meso-scale modeling efforts in estimating the smoke-induced changes in the radiative energy budget over high latitudes.

Palabras claves

 Artículos similares

       
 
Xochitl Cruz Núñez,Lourdes Villers Ruiz,Carlos Gay García    
In Mexico, approximately 7,650 wildfires occur annually, affecting 263,115 hectares of land. In addition to their impact on land degradation, wildfires cause deforestation, damage to ecosystems and promote land use change; apart from being the source of ... ver más
Revista: Atmósfera

 
Ajit Krishnaswamy,Ellen Simmons,Larry Joseph    
It is predicted that climate change has increased the frequency and intensity of natural disturbances and weather related natural disasters. Rural forest-based communities are especially vulnerable to changes in natural disturbance regimes influenced by ... ver más