Highlights Diurnal and seasonal variations of ML features on a long term basis. Long term decrease in ML height impacted by atmospheric instability changes. Increasing occurrences of stratiform rain and decrease in convective rain.

    Abstract The present study deals with the variation in height and width of the melting layer (ML) in relation to atmospheric parameters such as near-surface temperature (2 m), zero-degree isotherm height, cloud liquid water content (CLWC), and prevailing instability expressed in terms of convective available potential energy (CAPE) during the pre-monsoon (March-May) and monsoon (June-September) seasons over a tropical location Kolkata (22.57° N, 88.37° E), India. Stratiform rains which are characterized by the presence of ML, are prevalent over Kolkata during both pre-monsoon and monsoon seasons. The ML height is observed to be dependent on the near-surface temperature, zero-degree isotherm height, and atmospheric instability. Again, CLWC controls the melting layer width. Also, the diurnal and seasonal variations of ML height and width have been investigated over the present location. In addition, a long-term change in ML height, zero-degree isotherm altitude, and atmospheric instability (CAPE) have been observed over this location. The decreasing CAPE has been found to be responsible for increasing (decreasing) stratiform (convective) precipitation over the years.


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    Title :

    Study of melting layer features related to atmospheric parameters over a tropical location


    Contributors:

    Published in:

    Advances in Space Research ; 72 , 2 ; 378-388


    Publication date :

    2023-03-05


    Size :

    11 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





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