Boreal forest albedo and LAI in SNORTEX 2008–2010

Author

Manninen, Terhikki ; Korhonen, Lauri ; Riihelä, Aku ; Lahtinen, Panu ; Stenberg, Pauline ; Roujean, Jean-Louis ; Hautecoeur, Olivier

Author_Institution

Finnish Meteorol. Inst., Helsinki, Finland

fYear

2012

fDate

22-27 July 2012

Firstpage

3335

Lastpage

3338

Abstract

Airborne broadband albedo and leaf area index (LAI) measurements were carried out simultaneously in the subarctic area of Sodankylä during the SNORTEX campaign in springs 2008 - 2010. Two pairs of pyranometers were attached to the helicopter on either side and a wide-optics camera was looking orthogonally downwards for LAI retrieval. The albedo depended on the LAI according to a previously developed model. The measurement altitude did not affect the albedo vs. LAI relationship. The winter time albedo value of snow varied in a wide range both seasonally and diurnally. The albedo values of open areas could also differ from each other distinctly during the same day depending on the land cover class.

Keywords

albedo; atmospheric measuring apparatus; forestry; helicopters; snow; terrain mapping; vegetation; LAI; SNORTEX 2008-2010; Sodankylä; airborne broadband albedo; boreal forest albedo; helicopter; land cover class; leaf area index; pyranometers; snow; subarctic area; wide-optics camera; winter time albedo value; Atmospheric measurements; Calibration; Floors; Helicopters; Indexes; Snow; Albedo; airborne; boreal forest; leaf area index; radiation;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium (IGARSS), 2012 IEEE International

Conference_Location

Munich

ISSN

2153-6996

Print_ISBN

978-1-4673-1160-1

Electronic_ISBN

2153-6996

Type

conf

DOI

10.1109/IGARSS.2012.6350589

Filename

6350589