Abstract
The evolutionary characteristics of a dust storm over Oman on 2 February 2008 were studied by analyzing the weather associated with it. The National Center for Environmental Prediction/National Centre for Atmospheric Research (NCEP/NCAR) reanalysis wind flow pattern at 1,000 hPa showed a clockwise and outward wind flow pattern over the study region, a manifestation of a high-pressure cold air mass. In addition, ground truth observations for surface temperature and surface winds showed cold northerly winds until the early morning of 2 February 2008. A strong wind shear resulted from differences in wind speed between warm air and trapped cold air. This vertical wind shear enhanced instability. Furthermore, the weakening of the inversion in the lower troposphere and the formation of a mixed layer due to transfer of horizontal momentum from upper air towards the surface led to strong surface winds. These strong winds lifted a large amount of dust particles off the ground, resulting in the dust event of 2 February 2008.
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Acknowledgements
The authors thank the MODIS Land Rapid Response Team at NASA for sharing their observations, and acknowledge the NOAA-CIRES Climate Diagnostic Center, Boulder, USA for the NCEP reanalysis data. We also appreciate the timely help received from Phillip Gladstone for arranging weather history data (http://wunderground.com). We are also grateful to two anonymous reviewers for their constructive criticism and suggestions that led to great improvements in the manuscript. We also thank Dr. Blaise Desouza, Indian Institute of Soil Science, Bhopal for linguistic improvements to the manuscript.
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Desouza, N.D., Simon, B. & Qureshi, M.S. Evolutionary characteristics of a dust storm over Oman on 2 February 2008. Meteorol Atmos Phys 114, 107 (2011). https://doi.org/10.1007/s00703-011-0163-7
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DOI: https://doi.org/10.1007/s00703-011-0163-7