Institution
National Aerospace Laboratories
Facility•Bengaluru, India•
About: National Aerospace Laboratories is a facility organization based out in Bengaluru, India. It is known for research contribution in the topics: Coating & Corrosion. The organization has 1838 authors who have published 2349 publications receiving 36888 citations.
Topics: Coating, Corrosion, Mach number, Sputter deposition, Aerodynamics
Papers published on a yearly basis
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TL;DR: In this paper, the authors evaluated the impact of background error statistics (BES) on forecasting tropical cyclone track and intensity in the north Indian Ocean over a period of one year using the Weather Research and Forecasting (WRF) model.
Abstract: [1] While the quality of background error statistics (BES) is recognized as one of the key components of assimilation, considerable uncertainties exist in prescribing BES, especially since the prescription and impact of BES can also depend on the weather regime and geographical location. In this backdrop, it is necessary to quantify the impact of different BES for particular weather systems; this is particularly true for cyclones over the north Indian Ocean which have characteristics different from those over the Atlantic and the Pacific. The objective of this work is to assess the relative improvement in forecasting tropical cyclone track and intensity due to different BES. We have used global BES (GBES), computed from global model forecasts for 357 cases distributed over a period of one year and regional BES (RBES), generated from short-range forecasts with Weather Research and Forecasting (WRF) model for a 30 day period. From a series of assimilation experiments using the WRF three-dimensional variational (3D-Var) data assimilation system with different BES, and a number of parameters to quantify the impact of BES, it is shown that the use of RBES in WRF 3D-Var significantly improves prediction of track as compared to simulations with no assimilation or GBES. Further, the skill with RBES is comparable with, or better than, many operational skills, although a strict comparison is difficult due to differences in the events and the basins. While parallel and significant efforts are needed for the formulation and incorporation of BES in assimilation systems in general, this study quantifies relative advantages of using RBES in forecasting cyclones over the Indian Ocean.
29 citations
TL;DR: In this article, the activation energy, order of kinetics, and frequency factor of hexagonal Dy(OH)3 and cubic Dy2O3 nanorods were determined using Chen's peak shape method.
29 citations
TL;DR: In this paper, the activation energy and frequency factor (s) were estimated using Chen's glow peak shape method and obtained to be in the range 0.45-1.67 eV and 1.8 × 104 to 4.0 × 1012 s−1 respectively.
29 citations
TL;DR: In this paper, the in situ anode temperature during the anodization process was measured using a Pt thin film Resistance Temperature Detector sensor which is deposited on partially fabricated alumina through anodisation.
29 citations
TL;DR: In this paper, the minimum total potential theorem and the Hu-Washizu theorem were used to derive the orthogonality condition for determining consistent, thermal stresses in a variationally correct manner.
29 citations
Authors
Showing all 1850 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Harish C. Barshilia | 46 | 236 | 6825 |
| K.S. Rajam | 42 | 83 | 4765 |
| Kozo Fujii | 39 | 411 | 5845 |
| Parthasarathi Bera | 39 | 136 | 5329 |
| R.P.S. Chakradhar | 36 | 166 | 4423 |
| T. N. Guru Row | 36 | 309 | 5186 |
| Takashi Ishikawa | 36 | 154 | 5019 |
| Henk A. P. Blom | 34 | 168 | 5992 |
| S. Ranganathan | 33 | 211 | 5660 |
| S.T. Aruna | 33 | 101 | 4954 |
| Arun M. Umarji | 33 | 207 | 3582 |
| Vinod K. Gaur | 33 | 92 | 4003 |
| Keisuke Asai | 31 | 350 | 3914 |
| K. J. Vinoy | 30 | 240 | 3423 |
| Gangan Prathap | 30 | 241 | 3466 |