Segmentation and Tracking of Marine Cellular Clouds observed by Geostationary Satellites
| Autor: | Alisa Gufan, Rachel C. Kurchin, Ilan Koren, Colin Price, Yoav Lehahn, Erick Fredj |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Earth's energy budget
010504 meteorology & atmospheric sciences Meteorology business.industry Cloud computing 02 engineering and technology Tracking (particle physics) 01 natural sciences Marine stratocumulus Transformation (function) 13. Climate action 0202 electrical engineering electronic engineering information engineering Geostationary orbit Radiative transfer General Earth and Planetary Sciences 020201 artificial intelligence & image processing Segmentation 14. Life underwater business Geology 0105 earth and related environmental sciences Remote sensing |
| Zdroj: | International Journal of Remote Sensing. 37:1055-1068 |
| ISSN: | 1366-5901 0143-1161 |
| DOI: | 10.1080/2150704x.2016.1142681 |
| Popis: | Marine stratocumulus MSC are shallow marine boundary layer clouds that have a significant cooling contribution to the Earth’s radiative balance. The amplitude of this cooling effect strongly depends on the properties of closed and open cells comprising MSC cloud fields. Systematic study of the underlying processes associated with cloud cell properties requires accurate and reliable cell characterization. Here we propose a method for cell segmentation of MSC clouds as observed from geostationary satellite images. The method, which is based on watershed transformation, is found to be highly efficient in segmentation of both open and closed MSC scenes. Application of the suggested methodology over a Lagrangian framework that track the clouds as they are advected by the wind and comparison of the results between pairs of consecutive images indicate that the resulted segmentation is robust and consistent. The methodology developed in this work opens the way to systematic investigation of spatiotemporal changes in MSC cloud field properties, which will improve our understanding of MSC clouds and their role in regulating Earth’s radiative budget. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|