Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Retrieval of the ultraviolet effective snow albedo during 1998 winter campaign in the French Alps

Not Accessible

Your library or personal account may give you access

Abstract

A measurement campaign was carried out in February 1998 at Briançon Station, French Alps (44.9° N, 6.65° E, 1310 m above sea level) in order to determine the UV effective snow albedo that was retrieved for both erythemal and UV-A irradiances from measurements and modeling enhancement factors. The results are presented for 15 cloudless days with very variable snow cover and a small snowfall in the middle of the campaign. Erythemal irradiance enhancement due to the surface albedo was found to decrease from approximately +15% to +5% with a jump to +22% after the snowfall, whereas UV-A irradiance enhancement decreased from 7% to 5% and increased to 15% after the snowfall. These values fit to effective surface albedos of 0.4, 0.1, and 0.5 for erythemal, and to effective albedos of 0.25, 0.1, and 0.4 for UV-A irradiances, respectively. An unexpected difference between the effective albedos retrieved in the two wavelength regions can be explained by the difference of the environment contribution.

© 2003 Optical Society of America

Full Article  |  PDF Article
More Like This
Retrieval of the ultraviolet aerosol optical depth during a spring campaign in the Bavarian Alps

Jacqueline Lenoble, Timothy Martin, Mario Blumthaler, Rolf Philipona, Astrid Albold, Thierry Cabot, Alain de La Casinière, Julian Gröbner, Dominique Masserot, Martin Müller, Thomas Pichler, Günther Seckmeyer, Daniel Schmucki, Mamadou Lamine Touré, and Alexis Yvon
Appl. Opt. 41(9) 1629-1639 (2002)

Method to determine snow albedo values in the ultraviolet for radiative transfer modeling

Harry Schwander, Bernhard Mayer, Ansgar Ruggaber, Astrid Albold, Gunther Seckmeyer, and Peter Koepke
Appl. Opt. 38(18) 3869-3875 (1999)

Effect of topography on average surface albedo in the ultraviolet wavelength range

Philipp Weihs, Helfried Scheifinger, Govindaraj Rengarajan, and Stana Simic
Appl. Opt. 39(21) 3592-3603 (2000)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (1)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved