Atmospheric Downscaling using Genetic Programming
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| Title: | Main Title: Atmospheric Downscaling using Genetic Programming |
| Description: | Abstract: We are using a machine learning approach, Genetic Programming (GP), for discovering downscaling rules from a training data set (high-resolution model runs). This report covers our rst steps to adapting GP to our downscaling problem. Exact reproduction of the ne-scale elds from the coarse data will not be possible. We introduce multi-objective tness functions aiming at reproducing a 'realistic structure' rather than the exact eld. Furthermore we integrate functions operating in space to make the GP able to account for the spatial nature of our data in a more exible way. We show that especially the integration of spatial standard deviation into the tness function gives very promising results. In the rst part of this report the di erent modi cations of our original GP algorithm are described and tested on the problem of downscaling near-surface temperature in clear sky nights. The second part covers a rst test for downscaling of near-surface wind speed. The last part describes an approach for generalizing the multi-objective tness assignment, the Strength Pareto approach. |
Responsible Party
| Creator: | Tanja Zerenner (Author) |
| Publisher: | CRC/TR32 Database (TR32DB) |
| Publication Year: | 2013 |
Topic
| TR32 Topic: | Atmosphere |
| Related Subproject: | C4 |
| Subject: | Keyword: PhD Report |
File Details
| Filename: | Report3_Zerenner_2013.pdf |
| Data Type: | Text - Text |
| File Size: | 1.9 MB |
| Date: | Available: 28.08.2013 |
| Mime Type: | application/pdf |
| Data Format: | |
| Language: | English |
| Status: | Completed |
Constraints
| Download Permission: | Only Project Members |
| General Access and Use Conditions: | For internal use only. |
| Access Limitations: | For internal use only. |
| Licence: | [TR32DB] Data policy agreement |
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Specific Information - Report
| Report Date: | 28th of August, 2013 |
| Report Type: | PhD Report |
| Report City: | Bonn, Germany |
| Report Institution: | Meteorological Institute, University Bonn |
| Number of Pages: | 15 (1 - 15) |
| Further Information: | TR32 Student Report Phase II |
Metadata Details
| Metadata Creator: | Tanja Zerenner |
| Metadata Created: | 04.12.2013 |
| Metadata Last Updated: | 04.12.2013 |
| Subproject: | C4 |
| Funding Phase: | 2 |
| Metadata Language: | English |
| Metadata Version: | V50 |
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Dataset Statistics
| Page Visits: | 628 |
| Metadata Downloads: | 0 |
| Dataset Downloads: | 1 |
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