Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation Data
In this study different approaches based on multilayer perceptron neural networks are proposed and evaluated with the aim to retrieve tropospheric profiles by using GPS radio occultation data. We employed a data set of 445 occultations covering the land surface within the Tropics, split into desert...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2009-01-01
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| Series: | Algorithms |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1999-4893/2/1/31/ |
| _version_ | 1818437649455644672 |
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| author | Stefania Bonafoni Fabrizio Pelliccia Roberta Anniballe |
| author_facet | Stefania Bonafoni Fabrizio Pelliccia Roberta Anniballe |
| author_sort | Stefania Bonafoni |
| collection | DOAJ |
| description | In this study different approaches based on multilayer perceptron neural networks are proposed and evaluated with the aim to retrieve tropospheric profiles by using GPS radio occultation data. We employed a data set of 445 occultations covering the land surface within the Tropics, split into desert and vegetation zone. The neural networks were trained with refractivity profiles as input computed from geometrical occultation parameters provided by the FORMOSAT-3/COSMIC satellites, while the targets were the dry and wet refractivity profiles and the dry pressure profiles obtained from the contemporary European Centre for Medium-Range Weather Forecast data. Such a new retrieval algorithm was chosen to solve the atmospheric profiling problem without the constraint of an independent knowledge of one atmospheric parameter at each GPS occultation. |
| first_indexed | 2024-12-14T17:28:02Z |
| format | Article |
| id | doaj.art-5d02e7230afb4d3f9de5f780816d099d |
| institution | Directory Open Access Journal |
| issn | 1999-4893 |
| language | English |
| last_indexed | 2024-12-14T17:28:02Z |
| publishDate | 2009-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Algorithms |
| spelling | doaj.art-5d02e7230afb4d3f9de5f780816d099d2022-12-21T22:53:10ZengMDPI AGAlgorithms1999-48932009-01-0121314510.3390/a2010031Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation DataStefania BonafoniFabrizio PellicciaRoberta AnniballeIn this study different approaches based on multilayer perceptron neural networks are proposed and evaluated with the aim to retrieve tropospheric profiles by using GPS radio occultation data. We employed a data set of 445 occultations covering the land surface within the Tropics, split into desert and vegetation zone. The neural networks were trained with refractivity profiles as input computed from geometrical occultation parameters provided by the FORMOSAT-3/COSMIC satellites, while the targets were the dry and wet refractivity profiles and the dry pressure profiles obtained from the contemporary European Centre for Medium-Range Weather Forecast data. Such a new retrieval algorithm was chosen to solve the atmospheric profiling problem without the constraint of an independent knowledge of one atmospheric parameter at each GPS occultation.http://www.mdpi.com/1999-4893/2/1/31/Neural networksGPSradio occultationstropospheric profiles |
| spellingShingle | Stefania Bonafoni Fabrizio Pelliccia Roberta Anniballe Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation Data Algorithms Neural networks GPS radio occultations tropospheric profiles |
| title | Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation Data |
| title_full | Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation Data |
| title_fullStr | Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation Data |
| title_full_unstemmed | Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation Data |
| title_short | Comparison of Different Neural Network Approaches for the Tropospheric Profiling over the Inter-tropical lands Using GPS Radio Occultation Data |
| title_sort | comparison of different neural network approaches for the tropospheric profiling over the inter tropical lands using gps radio occultation data |
| topic | Neural networks GPS radio occultations tropospheric profiles |
| url | http://www.mdpi.com/1999-4893/2/1/31/ |
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