introduction
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| ====== Introduction to the geostationary Earth radiation budget experiment and data ====== | ====== Introduction to the geostationary Earth radiation budget experiment and data ====== | ||
| - | By Dr. Dominique Crommelynck | + | By Dr. Dominique Crommelynck, Sept. 2003. |
| ===== Introduction ===== | ===== Introduction ===== | ||
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| The objective of this short paper is to highlight the what, how and why of the project in view to trigger the interest of Russian scientists involved in atmospheric physics, meteorology and climatology. | The objective of this short paper is to highlight the what, how and why of the project in view to trigger the interest of Russian scientists involved in atmospheric physics, meteorology and climatology. | ||
| - | It is an introduction to well documented web sites of the Rutherford Appleton Laboratories (RAL) http://www.ssd.rl.ac.uk/gerb/; the Royal Meteorological Institute (RMIB) http://gerb.oma.be/; and the Imperial College (IC) http://www.sp.ph.ic.ac.uk/gerb/index.html GERB groups. | + | It is an introduction to well documented web sites of the Rutherford Appleton Laboratories (RAL); the Royal Meteorological Institute (RMIB) http://gerb.oma.be/; and the Imperial College (IC) http://www.sp.ph.ic.ac.uk/gerb/index.html GERB groups. |
| ===== For what will the GERB observations be useful? ===== | ===== For what will the GERB observations be useful? ===== | ||
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| ==== The observation platform ==== | ==== The observation platform ==== | ||
| - | Up to now the Earth radiation budget (ERB) terms have only been observed with polar satellites able to see one location on Earth only two times a day with a twelve hour time interval. During some short periods several ERB satellites have been available simultaneously (NOAA- 9, NOAA-10, ERBS and actually TRRM, AQUA and TERRA) providing six observations a day of the same place. See the Earth Observation (EOS) program with the Cloud and the Earth's Radiant Energy System (CERES) home page: http://asd-www.larc.nasa.gov/ceres/. | + | Up to now the Earth radiation budget (ERB) terms have only been observed with polar satellites able to see one location on Earth only two times a day with a twelve hour time interval. During some short periods several ERB satellites have been available simultaneously (NOAA- 9, NOAA-10, ERBS and actually TRRM, AQUA and TERRA) providing six observations a day of the same place. See the Earth Observation (EOS) program with the Cloud and the Earth's Radiant Energy System (CERES) home page: https://ceres.larc.nasa.gov/. |
| This is however still insufficient to monitor the atmosphere without additional objective modelisation. Therefore the European ERB observations program got to be installed on the European meteorological satellite (EUMETSAT) geostationary satellite. Although this does not cover the whole Earth it will for the first time open the road to the radiation terms of the energy budget equation with well-sampled data. | This is however still insufficient to monitor the atmosphere without additional objective modelisation. Therefore the European ERB observations program got to be installed on the European meteorological satellite (EUMETSAT) geostationary satellite. Although this does not cover the whole Earth it will for the first time open the road to the radiation terms of the energy budget equation with well-sampled data. | ||
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| ===== Applications for GERB data ===== | ===== Applications for GERB data ===== | ||
| - | A wealth of applications will issue from GERB data. Radiation budget variability studies will lead to radiation budget climatology over the regions covered by MSG; it will include seasonal clear-sky fluxes variability necessary to derive the cloud radiative forcing. It will also lead to studies of cross effects and feedbacks between the Earth surface radiation and energy budgets, the temperature and water vapour temporal and spatial variability of the atmosphere. In relation with meteorology and climate numerical modelisation have already been compared to GERB observations with striking results. See: http://www.nerc-essc.ac.uk/~rpa. | + | A wealth of applications will issue from GERB data. Radiation budget variability studies will lead to radiation budget climatology over the regions covered by MSG; it will include seasonal clear-sky fluxes variability necessary to derive the cloud radiative forcing. It will also lead to studies of cross effects and feedbacks between the Earth surface radiation and energy budgets, the temperature and water vapour temporal and spatial variability of the atmosphere. In relation with meteorology and climate numerical modelisation have already been compared to GERB observations with striking results. |
| Study and research intentions of the GIST members are summarised in the table ”Users and their primary interests in GERB data” of Science Application found at the RAL GERB home page. | Study and research intentions of the GIST members are summarised in the table ”Users and their primary interests in GERB data” of Science Application found at the RAL GERB home page. | ||
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