دورية أكاديمية
Consistent retrieval of land surface radiation products from EO, including traceable uncertainty estimates
العنوان: | Consistent retrieval of land surface radiation products from EO, including traceable uncertainty estimates |
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المؤلفون: | T. Kaminski, B. Pinty, M. Voßbeck, M. Lopatka, N. Gobron, M. Robustelli |
المصدر: | Biogeosciences, Vol 14, Iss 9, Pp 2527-2541 (2017) |
بيانات النشر: | Copernicus Publications, 2017. |
سنة النشر: | 2017 |
المجموعة: | LCC:Ecology LCC:Life LCC:Geology |
مصطلحات موضوعية: | Ecology, QH540-549.5, Life, QH501-531, Geology, QE1-996.5 |
الوصف: | Earth observation (EO) land surface products have been demonstrated to provide a constraint on the terrestrial carbon cycle that is complementary to the record of atmospheric carbon dioxide. We present the Joint Research Centre Two-stream Inversion Package (JRC-TIP) for retrieval of variables characterising the state of the vegetation–soil system. The system provides a set of land surface variables that satisfy all requirements for assimilation into the land component of climate and numerical weather prediction models. Being based on a 1-D representation of the radiative transfer within the canopy–soil system, such as those used in the land surface components of advanced global models, the JRC-TIP products are not only physically consistent internally, but they also achieve a high degree of consistency with these global models. Furthermore, the products are provided with full uncertainty information. We describe how these uncertainties are derived in a fully traceable manner without any hidden assumptions from the input observations, which are typically broadband white sky albedo products. Our discussion of the product uncertainty ranges, including the uncertainty reduction, highlights the central role of the leaf area index, which describes the density of the canopy. We explain the generation of products aggregated to coarser spatial resolution than that of the native albedo input and describe various approaches to the validation of JRC-TIP products, including the comparison against in situ observations. We present a JRC-TIP processing system that satisfies all operational requirements and explain how it delivers stable climate data records. Since many aspects of JRC-TIP are generic, the package can serve as an example of a state-of-the-art system for retrieval of EO products, and this contribution can help the user to understand advantages and limitations of such products. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1726-4170 1726-4189 |
Relation: | http://www.biogeosciences.net/14/2527/2017/bg-14-2527-2017.pdf; https://doaj.org/toc/1726-4170; https://doaj.org/toc/1726-4189 |
DOI: | 10.5194/bg-14-2527-2017 |
URL الوصول: | https://doaj.org/article/4f42902ffc574229af3c76fc55a106c4 |
رقم الأكسشن: | edsdoj.4f42902ffc574229af3c76fc55a106c4 |
قاعدة البيانات: | Directory of Open Access Journals |
تدمد: | 17264170 17264189 |
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DOI: | 10.5194/bg-14-2527-2017 |