Developing a model-based framework for quality assessments of in-situ measurement protocols for albedo

Validation of satellite-based retrievals of land surface albedo using in-situ measurements is essential to identify differences between them, to improve retrieval algorithms and to assess conformity to accuracy requirements. Differences between in-situ and satellite-based retrievals depend on the actual difference and their associated uncertainties, where it is crucial that the uncertainties of both can be computed to properly understand potential differences. This study introduces a model-based framework for assessing the quality of in-situ albedo measurements. A 3D Monte Carlo Ray Tracing (MCRT) radiative transfer model is used to simulate field measurements of surface albedo, and is able to identify and quantify potential sources of error in the field measurement. Compliance with the World Meteorological Organisation (WMO) requirement for 3% accuracy is tested.

ADAMS Jennifer;  GOBRON Nadine;  WIDLOWSKI Jean-Luc;  MIO Corrado; 

2016-12-21

European Space Agency

JRC104287

978-92-9221-305-3,   

1609-042X,   

https://www.scopus.com/record/display.uri?eid=2-s2.0-84988494751&origin=resultslist&sort=plf-f&src=s&sid=70A41E99CFA04C18A0C07BCB501F77AA.wsnAw8kcdt7IPYLO0V48gA%3a140&sot=autdocs&sdt=autdocs&sl=17&s=AU-ID%286701592812%29&relpos=3&citeCnt=0&searchTerm=,    https://publications.jrc.ec.europa.eu/repository/handle/JRC104287,