Remote Sens. 2010, 2(8), 1918-1940; doi:10.3390/rs2081918
Article

Land Surface Albedos Computed from BRF Measurements with a Study of Conversion Formulae

1,* email, 2email, 1email, 1email, 1email and 2email
Received: 30 May 2010; in revised form: 11 June 2010 / Accepted: 25 June 2010 / Published: 12 August 2010
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Land surface hemispherical albedos of several targets have been resolved using the bidirectional reflectance factor (BRF) library of the Finnish Geodetic Institute (FGI). The library contains BRF data measured by FGI during the years 2003–2009. Surface albedos are calculated using selected BRF datasets from the library. Polynomial interpolation and extrapolation have been used in computations. Several broadband conversion formulae generally used for satellite based surface albedo retrieval have been tested. The albedos were typically found to monotonically increase with increasing zenith angle of the Sun. The surface albedo variance was significant even within each target category / surface type. In general, the albedo estimates derived using diverse broadband conversion formulas and estimates obtained by direct integration of the measured spectra were in line.
Keywords: reflectance; albedo; climate; remote sensing; snow; vegetation; measurement; satellite; goniometer; spectrometer; FIGIFIGO
PDF Full-text Download PDF Full-Text [4232 KB, uploaded 19 June 2014 00:06 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Peltoniemi, J.I.; Manninen, T.; Suomalainen, J.; Hakala, T.; Puttonen, E.; Riihelä, A. Land Surface Albedos Computed from BRF Measurements with a Study of Conversion Formulae. Remote Sens. 2010, 2, 1918-1940.

AMA Style

Peltoniemi JI, Manninen T, Suomalainen J, Hakala T, Puttonen E, Riihelä A. Land Surface Albedos Computed from BRF Measurements with a Study of Conversion Formulae. Remote Sensing. 2010; 2(8):1918-1940.

Chicago/Turabian Style

Peltoniemi, Jouni I.; Manninen, Terhikki; Suomalainen, Juha; Hakala, Teemu; Puttonen, Eetu; Riihelä, Aku. 2010. "Land Surface Albedos Computed from BRF Measurements with a Study of Conversion Formulae." Remote Sens. 2, no. 8: 1918-1940.

Remote Sens. EISSN 2072-4292 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert