Document of bibliographic reference 233374

BibliographicReference record

Type

Bibliographic resource

Type of document

Ephemera

Type of document

Poster

BibLvlCode

M

Title

Sky dome correction for SeaPRISM and TriOS above water radiometric measurements in MERMAID

Abstract

The water reflectance, p_w, derived from in-situ measurements represents a key element in the validation of MERIS (MEdium Resolution Imaging Spectrometer) atmospheric corrections over ocean. The ESA/MERMAID (MERis MAtchup In situ Database) supports this validation effort with concurrent MERIS/in-situ p_w matchups (>30 sites). The water-leaving radiance, L_w, needs to be corrected for the Fresnel reflection of the sky dome by the sea surface. In the standard protocol, the neglect of polarization induces an error on p_w. An alternative correction, fully accounting for polarization processes (i.e., sea surface reflection and atmospheric scattering) has been developed to be implemented into two new sky dome correction processors; the latters have been verified with the MERMAID in-situ processing chain for the AERONET-OC SeaPRISM sensor at 8 centre wavelengths (412-1020 nm) and the MUMM hyperspectral TriOS instrument convoluted to the 13 MERIS band filters.The impact of this new correction on the MERIS level-2 product over ocean has been evaluated by validating the p_w retrieval in MERMAID.

Bibliographic citation

Barker, K.; Zagolski, F.; Santer, R.; Kent, C.; Huot, J.-P.; Ruddick, K.; Zibordi, G. (2012). Sky dome correction for SeaPRISM and TriOS above water radiometric measurements in MERMAID. Argans/ParBleu Technologies/Adrinord: Plymouth, St Jean-sur-Richelieu and Lille. 1 poster pp.

Topic

Marine

Access rights

open access

Is accessible for free

true