Abstract
The thermodynamic structure of the Atmospheric Boundary Layer (ABL) over the Arabian sea region has been studied with the help of 135 aerological observations obtained during MONSOON-77 in the region (10–14° N, 64–68° E) by USSR research vessels. Low-level inversions were observed over the western Arabian sea region (west of 66° E) in association with suppressed convection. The different sublayers of the ABL, viz. the mixed layer, the cloud layer and the inversion/isothermal/stable layer were identified. The low-level stability analysis indicated that in the region east of 66° E, conditions were favourable for deep convection. The thermodynamic transformation of the boundary layer after precipitation was documented.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
Augstein, E., Riehl, H., Ostapoff, F. and Wagner, V.: 1973, ‘Mass and Energy Transports in an Undisturbed Atlantic Trade Wind Flow’,Mon. Wea. Rev. 101, 101–111.
Augstein, E., Schmidt, H. and Ostapoff, F.: 1974, ‘The Vertical Structure of the Atmospheric Planetary Boundary Layer in Undisturbed Trade Winds over the Atlantic Ocean’,Boundary-Layer Meteorol. 6, 129–150.
Betts, A. K.: 1976, ‘The Thermodynamic Transformation of the Tropical Sub-cloud Layer by Precipitation and Downdrafts’,J. Atmos. Sci. 33, 1008–1020.
Betts, A. K. and Albrecht, B. A.: 1987, ‘Conserved Variable Analysis of the Convective Boundary Layer Thermodynamic Structure over the Tropical Oceans’,J. Atmos. Sci. 44, 83–99.
Brummer, B.: 1976, ‘The Kinematics, Dynamics and Kinetic Energy Budgets of the Trade Wind Flow Over the Atlantic Ocean’,Meteorol. Forschungsergeb B11, 1–24.
Brummer, B.: 1978, ‘Mass and Energy Budgets of a 1 km High Atmospheric Box over the GATE C-scale Triangle during Undisturbed and Disturbed Weather Conditions’,J. Atmos. Sci. 6, 997–1011.
Bunker, A. P.: 1965, ‘Interaction of the Summer Monsoon Air with the Arabian Sea’,Proc. Symposium on Meteorological Results of the International Indian Ocean Expedition, Bombay 22 July 1965, pp. 22–26.
Colon, J. A.: 1964, ‘On Interaction Between the Southwest Monsoon Current and the Sea Surface over the Arabian Sea’,Indian J. Meteorol. Geophys. 15, 183–200.
Deardorff, J. W.: 1972, ‘Parameterization of the Planetary Boundary Layer for Use in General Circulation Models’,Mon. Wea. Rev. 100, 93–106.
Desai, B. N.: 1968, ‘Interaction of the Summer Monsoon Current with Water Surface over the Arabian Sea’,Indian J. Meteorol. Geophys. 19, 159–166.
Desai, B. N.: 1970, ‘Nature of Low-Level Inversion over the Arabian Sea and the Role of the Western Ghats in Modifying Airmass Stratification within 500 km of the West Coast of the Peninsula’,Indian J. Meteorol. Geophys. 21, 653–655.
Firestone, J. K. and Albrecht, B. A.: 1986, ‘The Structure of the Atmospheric Boundary Layer in the Central Equatorial Pacific during January and February of FGGE’,Mon. Wea. Rev. 114, 2219–2231.
Ghosh, S. K., Pant, M. C. and Dewan, B. N.: 1978, ‘Influence of the Arabian Sea on the Indian Summer Monsoon’,Tellus 30, 117–125.
Holt, T. and Sethuraman, S.: 1985, ‘Aircraft and Ship Observations of the Mean Structure of the Marine Boundary Layer over the Arabian Sea during MONEX-79’,Boundary-Layer Meteorol. 33, 259–282.
Holt, T. and Sethuraman, S.: 1987, ‘A Comparison of the Significant Features of the Marine Boundary Layer over the East Central Arabian Sea and the North Central Bay of Bengal during MONEX-79’,Mausam 38, 171–176.
Kloesel, K. A. and Albrecht, B. A.: 1989, ‘Low-level Inversions over the Tropical Pacific-thermodynamic Structure of the Boundary Layer and the above Inversion Moisture Structure’,Mon. wea. rev.,117, 87–101.
Mohanty, U. C., Dube, S. K. and Singh, M. P.: 1983, ‘A Study of Heat and Moisture Budget over the Arabian Sea and Their Role in the Onset and Maintenance of Summer Monsoon’,J. Meteorol. Soc. Japan 61, 208–221.
O'Brien, J. J.: 1970, ‘Alternative solutions to the Classical Vertical Velocity Problem’,J. Appl. Meteorol. 9, 197–203.
Pant, M. C.: 1977, ‘Wind Stress and Fluxes of Sensible Heat and Latent Heat over the Arabian Sea during ISMEX-73’,Indian J. Meteorol. Hydrol. Geophys. 28, 189–196.
Pant, M. C.: 1978, ‘Vertical Structure of the Planetary Boundary Layer in the West Indian Ocean during the Indian Summer Monsoon as Revealed by ISMEX-73 Data’,J. Meteorol. Hydrol. Geophys. 29, 88–98.
Pant, M. C.: 1982, ‘Some Characteristic Features of the Low-Level Jet Field over the Arabian Sea during the Indian Summer Monsoon’,Mausam' 33, 85–90.
Parasnis, S. S.: 1991, ‘Convective Boundary Layer during Active and Break Conditions of Summer Monsoon’,J. Atmos. Sci. 48, 999–1002.
Parasnis, S. S. and Goyal, S. S.: 1990, ‘Thermodynamic Features of the Atmospheric Boundary Layer during Summer Monsoon’,Atmos. Env. 24A, 743–752.
Parasnis, S. S. and Morwal, S. B.: 1991, ‘Convective Boundary Layer over the Deccan Plateau, India during Summer Monsoon’,Boundary-Layer Meteorol. 54, 59–68.
Parasnis, S. S., Morwal, S. B. and Vernekar, K. G.: 1991, ‘Convective Boundary Layer in the Region of the Monsoon Trough — A Case Study’,Adv. Atmos. Sci. 8, 505–509.
Ramage, C. S.: 1966, ‘The Summer Atmospheric Circulation over the Arabian Sea’,J. Atmos. Sci. 23, 144–150.
Ryan, B. F., Wilson, K. J. and Zipser, E. J.: 1989, ‘Modification of the Thermodynamic Structure of the Lower Troposphere by the Evaporation of Precipitation Ahead of a Cold Front’,Mon. Wea. Rev. 117, 138–153.
Sikka, D. R., Bhide, U. V. and Nagar, S. G.: 1981, ‘Spatial and Temporal Variability of the Monsoon Boundary Layer over the Arabian Sea’,Proc. Symp. on Environmental Physics and Boundary Layer Meteorology, Pune, India, 24–26 Nov. 1981, pp. 111–118.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Parasnis, S.S., Morwal, S.B. Thermodynamic structure of the Atmospheric Boundary Layer over the Arabian sea as revealed by MONSOON-77 data. Boundary-Layer Meteorol 63, 365–380 (1993). https://doi.org/10.1007/BF00705358
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00705358