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The transport of momentum, sensible heat, potential energy and moisture over the western Himalayas during the winter season

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Summary

The western Himalayas receive higher precipitation than the eastern Himalayas during the winter season (December–March). This differential pattern of winter precipitation over the Himalayas can be attributed to topography and to a higher frequency of disturbances over the western Himalayas, which result in variations in the circulation features. These circulation features, in turn, result in variations in the meridional transport of heat, momentum, potential energy, and moisture across the Himalayas due to mean and eddy motion.

Significant meridional transport due to mean motion takes place in the upper troposphere at 300 hPa and 200 hPa. Transport east of 100° E dominates the transport over the western Himalayas. The eddy transport of heat, momentum, and potential energy is considerably smaller than that due to mean motion. Eddy transport magnitudes are smaller up to 500 hPa and increase rapidly aloft to 300 hPa and 200 hPa. Eddy transport over the western Himalayas is greater than over the eastern Himalayas.

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  1. Research and Development Centre, Snow and Avalanche Study Establishment, Him Parisar, Chandigarh, India

    A. P. Dimri

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  1. A. P. Dimri
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Dimri, A. The transport of momentum, sensible heat, potential energy and moisture over the western Himalayas during the winter season. Theor. Appl. Climatol. 90, 49–63 (2007). https://doi.org/10.1007/s00704-006-0274-0

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  • DOI: https://doi.org/10.1007/s00704-006-0274-0

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