http://koha.moes.gov.in:8083/jspui/handle/123456789/7002 2021-08-10T05:11:53Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7046 Title: Extended range tropical cyclone predictions for East Coast of India Authors: Rajasekhar M.; Kishtawal C.M.; Prasad M.Y.S.; Seshagiri Rao V.; Rajasekhar M. Abstract: East Coast of India is vulnerable for tropical cyclone hazards which form over Bay of Bengal (BoB). The average annual frequency of tropical cyclones over the BoB and Arabian Sea (AS) is about five (about 5-6 of the global annual average) and about 80 cyclones form around the globe in a year. The frequency is more in the BoB than in the Arabian Sea, the ratio being 4:1. The monthly frequency of tropical cyclones in the north Indian Ocean display a bi-modal characteristic with a primary peak in November and secondary peak in May. © 2014 Capital Publishing Company 2014-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7045 Title: Deterministic methods for prediction of tropical cyclone tracks Authors: Mohanty U.C.; Gupta A. Abstract: Prediction of the tracks of tropical cyclones is one of the most difficult and challenging problems of current international tropical cyclone research. The focal point of this research is to minimize the forecast errors to the extent that the forecast can be used effectively for issuing appropriate warnings for disaster management purposes. The level of importance is reflected in the large number of forecast techniques that have been developed using wide range of approaches, from empirical through statistical and dynamical. However, due to complexities of the problem, no single technique has proven to have outstanding performance relative to the others. Figure 1 is a good example of the performance of eight different operational track prediction models for hurricane 'Elena' of August, 1985. All the eight predicted tracks are in different directions, but the hurricane moved unexpectedly in yet another direction far apart from all the above tracks. © 2008 Springer Netherlands. 2008-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7043 Title: Suitable probability model for severe cyclonic storms striking the coast around the Bay of Bengal. Authors: Mooley DA Abstract: All the 141 severe cyclonic storms which struck the Arakan Coast of Burma and the coasts of Bangla Desh, E. India and Sri Lanka during the period 1877-1977 have been considered in this study. Swed and Eisenhart's runs test for runs above and below the median to detect trend or oscillation and Mann-Kendall Rank Statistic test for randomness were applied to the time interval between successive severe cyclonic storms which struck the coast. The results of these tests suggest that this interval can be generally taken to be random.-from Authors 1980-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7044 Title: Applied hydrometeorology Authors: Rakhecha PR; Singh VP Abstract: This book "Applied Hydrometeorology" is intended to serve as a text for senior undergraduate or beginning undergraduate courses in hydrometeorology, and will also be of value to practicing engineers and hydrologists engaged in the planning, design, development, and management of water resources. The subject matter has been developed in a logical and coherent manner and covers a wide spectrum of topics and provides a discussion of significant developments. Also emphasis is placed on the applied aspects of hydro meteorological research and practice worldwide. Numerous worked examples are provided in each chapter to enable the user to gain comprehension and understanding of the subject of hydrometeorology. Audience: This book will be of interest to senior undergraduates and graduates in meteorology, hydrology and hydrometeorology. It will also be valuable book for practicing engineers and hydrologists engaged in the planning, development and management of water resources. © 2009 Capital Publishing Company. All rights reserved. 2009-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7042 Title: The use of empirical orthogonal functions for rainfall estimates ( Rajasthan). Authors: Rakhecha PR; Mandal BN Abstract: In the present study the empirical orthogonal function or 'eigenvector' approach is used to determine the dominant rainfall patterns from normal seasonal rainfall records over Rajasthan. Two contrasting years (1917 and 1918) in which rainfall was in excess and deficient are also examined separately to see what anomalies, if any, exist in the associated patterns. In the years of normal rainfall the first eigenvector is found to account for 99 of the variance in the original 12 x 40 matrix of rainfall data. However, in years of excessive or deficient rainfall, 3 or 4 vectors are needed to account for 99 of the variance. -from Authors 1981-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7040 Title: The annual oscillation of the tropospheric temperature in the northern hemisphere. Authors: Verma RK; Sikka DR Abstract: Mean monthly temperature data at 850, 700, 500, 300, 200 and 100 mb from about 120 radiosonde stations over the northern hemisphere are subjected to harmonic analysis to study the annual oscillation of tropospheric temperature. Two main features stand out in this analysis: over the tropics at individual stations double maxima occur-one at the lowest level, and the other at about 300 mb; and the amplitude of the annual oscillation is large over the tropics and subtropics with the maximum value appearing over the Asiatic monsoon region. -from Authors 1981-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7041 Title: Use of the equation of continuity of water vapour for computation of average precipitation over peninsular India during the summer monsoon. Authors: Bavadekar SN; Mooley DA Abstract: Water vapour fluxes, computed across different walls of a triangular volume of peninsular India, bounded by Trivandrum, Bombay and Nagpur, were used to compute the net water vapour flux convergence on a monthly mean basis for the months June to September for the years 1967 to 1972. The precipitation rates over the region were computed by using the flux convergence values and the equation of continuity for water, and were then compared with the actual rainfall. -from Authors 1981-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7039 Title: Droughts in India over the last 200 years, their socio-economic impacts and remedial measures for them. Authors: Mooley DA; Pant GB Abstract: The meteorological, political, and economic background which have an important bearing on the suffering of the people during droughts is reviewed. Application of the Mann-Kendall rank statistic test and Swed and Eisenhart's runs test to the interval between years of successive drought shows that droughts occur randomly in time. These droughts had serious effects on the people and economy of India. Food prices rose beyond the purchasing power of the rural population and led to reduced food-intake, resulting in low vitality and a large number of deaths from epidemics. Shortage of food resulted in exploitation by anti-social elements and in riots. Each drought pushed the farmer deeper in debt. The heavy cost of famine relief prevented the government from attending to issues such as education and agricultural improvement. 1981-01-01T00:00:00Z http://koha.moes.gov.in:8083/jspui/handle/123456789/7038 Title: Droughts and floods over India in summer monsoon seasons 1871- 1980. Authors: Street-Perrott Alayne; Beran Max; Ratcliffe Robert; Mooley DA; Parthasarathy B Abstract: Droughts over India were severe in four years: 1877, 1899, 1918 and 1972. Floods over India were severe in three years: 1878, 1892 and 1961. The occurrence of droughts and floods has been found to be random. The only years when none of the regions of India experienced either drought or flood were 1930, 1931 and 1957. Having identified individual years of monsoon rainfall excess and deficit, differences in depression track behaviour and in the location of the moonsoon trough were examined. 1983-01-01T00:00:00Z