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Patel, K. H.
- Impact of Satellite Derived Winds and Cumulus Physics during the Occurrence of the Tropical Cyclone Phyan
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Authors
Affiliations
1 School of Physical and Mathematical Sciences, Nanyang Technological University, SG
2 Satellite Meteorology Division, India Meteorological Department, New Delhi-110003, IN
3 Ericsson India Gloabal Services Pvt Ltd, Noida-201301, U. P, IN
4 N. A. S. Degree College, Meerut-250001, IN
1 School of Physical and Mathematical Sciences, Nanyang Technological University, SG
2 Satellite Meteorology Division, India Meteorological Department, New Delhi-110003, IN
3 Ericsson India Gloabal Services Pvt Ltd, Noida-201301, U. P, IN
4 N. A. S. Degree College, Meerut-250001, IN
Source
Indian Journal of Science and Technology, Vol 4, No 8 (2011), Pagination: 859-875Abstract
The quantitative data such as satellite derived winds are useful for improvement of the numerical prediction of weather events like tropical cyclones. In this study, the satellite derived winds from QuikSCAT surface observations and KALPANA-1 atmospheric motion vectors are used during the cyclone PHYAN in order to update the initial and boundary conditions through three-dimensional variational assimilation technique within the Weather Research Forecasting (WRF) modeling system. The simulated mean sea level pressure and 850 hPa wind fields from eight experiments are presented in this study in order to analyze the observed and simulated features of the tropical cyclone PHYAN that occurred in the month of November, 2009. The model results are also compared with the KALPANA-1 images and the India Meteorological Department (IMD) predicted results. Further, the intensity and track of the cyclonic storm PHYAN, generated from the simulations are also compared with the IMD predictions in order to evaluate the model performance.Keywords
WRF Modeling System, Variational Assimilation, Satellite Derived Winds, Cloud Motion Vectors, Cyclonic StormReferences
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- Influence of Nitrogen, Potassium and Sulphur Levels on Growth, Yield Attributes and Yield of Forage Pearlmillet [Pennisetum glaucum (L.) R. Br.]
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Authors
Affiliations
1 Department of Agricultural Chemistry and Soil Science, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
1 Department of Agricultural Chemistry and Soil Science, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
Source
An Asian Journal of Soil Science, Vol 5, No 1 (2010), Pagination: 21-25Abstract
A field experiment on this crop (variety GFB 1) was conducted in R.B.D. with three replications during summer-monsoon seasons of 2003 and 2004 on different sites to study the influence of various levels of N, K and S. There were two levels of N viz.,100 and 150 kg ha-1, three treatments of K viz., 0, 40 kg K2O ha-1 applied either entirely as basal and 50% as basal and remaining in two equal splits after first and second cuts and three levels of S viz., 0, 20 and 40 kg S ha-1. There were three cuts in each year. Initial available N, K and S contents in soil were low, medium and marginal, respectively in their status. Yield of green forage, dry matter yields were increased by application of N, K and S. There was 31.8 per cent increase in green forage yield due to nitrogen (N2) over that of N1 (521.4 q ha-1), 9.8 and 19.4 per cent increase for K1 and K2 over that of K0 (550.7 q ha-1) and 3.78 and 7.86 per cent increase for sulphur-S1 and S2 over that of S0 (581.7 q ha-1), respectively. Similarly the dry forage yield was also increased. The yield increase due to N, K and S treatment was supported by increase in growth parameters such as tillers per meter row length, number of internodes per plant and plant height. The beneficial effect due to K particularly that of K2 may probably due to dominance of intensity factor in K supply mechanism.Keywords
Green and Dry Matter Yield, Growth Parameters.- Effect of FYM And Fe-Zn-S Supplementation on Yield and Quality of Multicut Forage Sorghum (Cv. SSG-3)
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Authors
Affiliations
1 Department of Soil Science and Agricultural Chemistry, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
2 Department of Agricultural Chemistry and Soil Science, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
1 Department of Soil Science and Agricultural Chemistry, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN
2 Department of Agricultural Chemistry and Soil Science, B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat), IN