Author:
Saidou Chaibou Abdoul Aziz,Ma Xiaoyan,Sha Tong
Abstract
AbstractDust is the dominant aerosol type over West Africa (WA), and therefore accurate simulation of dust impact is critical for better prediction of weather and climate change. The dust radiative forcing (DRF) is estimated using two sets of experiments in this study: one without and the other with dust aerosol and its feedbacks with the Weather Research and Forecasting with Chemistry model (WRF-Chem). Results show that DRF presents a net warming effect at the top-of-atmosphere (TOA) and in the atmosphere (ATM), and cooling at the surface (SFC). The net DRF over WA is estimated to be 9 W/m2 at the TOA, 23 W/m2 in the ATM, and − 13 W/m2 at the SFC. Furthermore, dust-induced a reduction of sensible heat up to 24 W/m2 and SFC temperature up to 2 °C cooling over WA, an increase of latent heat up to 12 W/m2 over Sahara, a decrease up to 24 W/m2 over the vegetated surfaces and an increase in the surface energy balance up to 12 W/m2 over WA. The presence of dust significantly influences the surface energy budget over WA, suggesting that dust effects should be considered in more climate studies to improve the accuracy of climate predictions.
Publisher
Springer Science and Business Media LLC
Reference111 articles.
1. Pachauri, R. K. et al. Climate change 2014: Synthesis report. Contribution of Working Groups I, II and III to the fifth assessment report of the Intergovernmental Panel on Climate Change (IPCC, Geneva, 2014).
2. Barkan, J., Kutiel, H. & Alpert, P. Climatology of dust sources in North Africa and the Arabian Peninsula, based on TOMS data. Indoor Built Environ. 13, 407–419 (2004).
3. Engelstaedter, S., Tegen, I. & Washington, R. North African dust emissions and transport. Earth Sci. Rev. 79, 73–100 (2006).
4. Goudie, A. S. & Middleton, N. J. Saharan dust storms: Nature and consequences. Earth Sci. Rev. 56, 179–204 (2001).
5. Prospero, J. M. Environmental characterization of global sources of atmospheric soil dust identified with the NIMBUS 7 total ozone mapping spectrometer (TOMS) absorbing aerosol product. Rev. Geophys. https://doi.org/10.1029/2000RG000095 (2002).
Cited by
38 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献