Saved in:
| Main Author: | |
|---|---|
| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional Autónoma de México
2003
|
| Subjects: | |
| Online Access: | https://www.redalyc.org/articulo.oa?id=56516203 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866572968347303936 |
|---|---|
| author | M. Das Gupta |
| author_facet | M. Das Gupta |
| contents | Assimilation of special observations taken during the INDOEX and its impact on the global analysis-forecast system M. Das Gupta S. Basu U. C. Mohanty N. V. Sam R. K. Paliwal Biología INDOEX forecasting Data assimilation For accurate determination of the three-dimensional structure of atmospheric circulation, it is very important to assimilateevery observation from all available sources, especially over the data sparse oceanic regions. During theIndian Ocean Experiment Intensive Field Phase -1999 (INDOEX-IFP 99) several special observations were takenover the Indian Ocean region, which gave an opportunity to study this region more thoroughly. In this study thesespecial observations, along with atmospheric motion vectors that form METEOSAT-5(63oE), have been assimilatedalong with other conventional as well as non-conventional observations received at the National Centre for MediumRangeWeather Forecasting (NCMRWF) through the Global Telecommunication System (GTS) in its global analysesforecastsystem. The aim of this study is to assess the impact of the additional data on the Global Data Assimilationsystem of NCMRWF as well as to create better initial conditions for its future use in modeling studies.Impact of INDOEX data sets on analyses and subsequent 5-day forecast has been studied on the monthly mean fields.Mean wind field shows the strengthening of trade winds in the lower levels and the strengthening of the wind aroundsub-tropical anticyclone in the higher levels. It is found that the impact is stronger over the data sparse oceanic regionand in the higher levels compared to the lower levels. The impact of these data sets is studied on different initialconditions as well as forecast as part of case studies. Significant positive impacts, specially on analysis, are noticedover those oceanic regions where some well-defined synoptic system persisted. 2003 artículo científico 0187-6236 https://www.redalyc.org/articulo.oa?id=56516203 en http://www.redalyc.org/revista.oa?id=565 Atmósfera application/pdf Universidad Nacional Autónoma de México Atmósfera (México) Num.2 Vol.16 |
| format | Artículo científico |
| id | redalyc_56516203 |
| language | en |
| publishDate | 2003 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Assimilation of special observations taken during the INDOEX and its impact on the global analysis-forecast system M. Das Gupta Biología INDOEX forecasting Data assimilation Assimilation of special observations taken during the INDOEX and its impact on the global analysis-forecast system M. Das Gupta S. Basu U. C. Mohanty N. V. Sam R. K. Paliwal Biología INDOEX forecasting Data assimilation For accurate determination of the three-dimensional structure of atmospheric circulation, it is very important to assimilateevery observation from all available sources, especially over the data sparse oceanic regions. During theIndian Ocean Experiment Intensive Field Phase -1999 (INDOEX-IFP 99) several special observations were takenover the Indian Ocean region, which gave an opportunity to study this region more thoroughly. In this study thesespecial observations, along with atmospheric motion vectors that form METEOSAT-5(63oE), have been assimilatedalong with other conventional as well as non-conventional observations received at the National Centre for MediumRangeWeather Forecasting (NCMRWF) through the Global Telecommunication System (GTS) in its global analysesforecastsystem. The aim of this study is to assess the impact of the additional data on the Global Data Assimilationsystem of NCMRWF as well as to create better initial conditions for its future use in modeling studies.Impact of INDOEX data sets on analyses and subsequent 5-day forecast has been studied on the monthly mean fields.Mean wind field shows the strengthening of trade winds in the lower levels and the strengthening of the wind aroundsub-tropical anticyclone in the higher levels. It is found that the impact is stronger over the data sparse oceanic regionand in the higher levels compared to the lower levels. The impact of these data sets is studied on different initialconditions as well as forecast as part of case studies. Significant positive impacts, specially on analysis, are noticedover those oceanic regions where some well-defined synoptic system persisted. 2003 artículo científico 0187-6236 https://www.redalyc.org/articulo.oa?id=56516203 en http://www.redalyc.org/revista.oa?id=565 Atmósfera application/pdf Universidad Nacional Autónoma de México Atmósfera (México) Num.2 Vol.16 |
| title | Assimilation of special observations taken during the INDOEX and its impact on the global analysis-forecast system |
| topic | Biología INDOEX forecasting Data assimilation |
| url | https://www.redalyc.org/articulo.oa?id=56516203 |