Effect of small-scale snow surface roughness on snow albedo and reflectance

Terhikki Manninen; Kati Anttila; Emmihenna Jääskeläinen; Aku Riihelä; Jouni Peltoniemi; Petri Räisänen; Panu Lahtinen; Niilo Siljamo; Laura Thölix; Outi Meinander; Anna Kontu; Hanne Suokanerva; Roberta Pirazzini; Juha Suomalainen; Teemu Hakala; Sanna Kaasalainen; Harri Kaartinen; Antero Kukko; Olivier Hautecoeur; Jean Louis Roujean

doi:10.5194/tc-15-793-2021

Effect of small-scale snow surface roughness on snow albedo and reflectance

Terhikki Manninen^*, Kati Anttila, Emmihenna Jääskeläinen, Aku Riihelä, Jouni Peltoniemi, Petri Räisänen, Panu Lahtinen, Niilo Siljamo, Laura Thölix, Outi Meinander, Anna Kontu, Hanne Suokanerva, Roberta Pirazzini, Juha Suomalainen, Teemu Hakala, Sanna Kaasalainen, Harri Kaartinen, Antero Kukko, Olivier Hautecoeur, Jean Louis Roujean

^*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

16 Sitaatiot (Scopus)

74 Lataukset (Pure)

Abstrakti

The primary goal of this paper is to present a model of snow surface albedo accounting for small-scale surface roughness effects. The model is based on photon recollision probability, and it can be combined with existing bulk volume albedo models, such as Two-streAm Radiative TransfEr in Snow (TARTES). The model is fed with in situ measurements of surface roughness from plate profile and laser scanner data, and it is evaluated by comparing the computed albedos with observations. It provides closer results to empirical values than volume-scattering-based albedo simulations alone. The impact of surface roughness on albedo increases with the progress of the melting season and is larger for larger solar zenith angles. In absolute terms, small-scale surface roughness can decrease the total albedo by up to about 0.1. As regards the bidirectional reflectance factor (BRF), it is found that surface roughness increases backward scattering especially for large solar zenith angle values.

Alkuperäiskieli	Englanti
Sivut	793-820
Sivumäärä	28
Julkaisu	CRYOSPHERE
Vuosikerta	15
Numero	2
DOI - pysyväislinkit	https://doi.org/10.5194/tc-15-793-2021
Tila	Julkaistu - 17 helmik. 2021
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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10.5194/tc-15-793-2021Lisenssi: CC BY

tc-15-793-2021Final published version, 6,33 MBLisenssi: CC BY

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Manninen, T., Anttila, K., Jääskeläinen, E., Riihelä, A., Peltoniemi, J., Räisänen, P., Lahtinen, P., Siljamo, N., Thölix, L., Meinander, O., Kontu, A., Suokanerva, H., Pirazzini, R., Suomalainen, J., Hakala, T., Kaasalainen, S., Kaartinen, H., Kukko, A., Hautecoeur, O., & Roujean, J. L. (2021). Effect of small-scale snow surface roughness on snow albedo and reflectance. CRYOSPHERE, 15(2), 793-820. https://doi.org/10.5194/tc-15-793-2021

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title = "Effect of small-scale snow surface roughness on snow albedo and reflectance",

abstract = "The primary goal of this paper is to present a model of snow surface albedo accounting for small-scale surface roughness effects. The model is based on photon recollision probability, and it can be combined with existing bulk volume albedo models, such as Two-streAm Radiative TransfEr in Snow (TARTES). The model is fed with in situ measurements of surface roughness from plate profile and laser scanner data, and it is evaluated by comparing the computed albedos with observations. It provides closer results to empirical values than volume-scattering-based albedo simulations alone. The impact of surface roughness on albedo increases with the progress of the melting season and is larger for larger solar zenith angles. In absolute terms, small-scale surface roughness can decrease the total albedo by up to about 0.1. As regards the bidirectional reflectance factor (BRF), it is found that surface roughness increases backward scattering especially for large solar zenith angle values.",

author = "Terhikki Manninen and Kati Anttila and Emmihenna J{\"a}{\"a}skel{\"a}inen and Aku Riihel{\"a} and Jouni Peltoniemi and Petri R{\"a}is{\"a}nen and Panu Lahtinen and Niilo Siljamo and Laura Th{\"o}lix and Outi Meinander and Anna Kontu and Hanne Suokanerva and Roberta Pirazzini and Juha Suomalainen and Teemu Hakala and Sanna Kaasalainen and Harri Kaartinen and Antero Kukko and Olivier Hautecoeur and Roujean, {Jean Louis}",

year = "2021",

month = feb,

day = "17",

doi = "10.5194/tc-15-793-2021",

language = "English",

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Manninen, T, Anttila, K, Jääskeläinen, E, Riihelä, A, Peltoniemi, J, Räisänen, P, Lahtinen, P, Siljamo, N, Thölix, L, Meinander, O, Kontu, A, Suokanerva, H, Pirazzini, R, Suomalainen, J, Hakala, T, Kaasalainen, S, Kaartinen, H, Kukko, A, Hautecoeur, O & Roujean, JL 2021, 'Effect of small-scale snow surface roughness on snow albedo and reflectance', CRYOSPHERE, Vuosikerta 15, Nro 2, Sivut 793-820. https://doi.org/10.5194/tc-15-793-2021

TY - JOUR

T1 - Effect of small-scale snow surface roughness on snow albedo and reflectance

AU - Manninen, Terhikki

AU - Anttila, Kati

AU - Jääskeläinen, Emmihenna

AU - Riihelä, Aku

AU - Peltoniemi, Jouni

AU - Räisänen, Petri

AU - Lahtinen, Panu

AU - Siljamo, Niilo

AU - Thölix, Laura

AU - Meinander, Outi

AU - Kontu, Anna

AU - Suokanerva, Hanne

AU - Pirazzini, Roberta

AU - Suomalainen, Juha

AU - Hakala, Teemu

AU - Kaasalainen, Sanna

AU - Kaartinen, Harri

AU - Kukko, Antero

AU - Hautecoeur, Olivier

AU - Roujean, Jean Louis

PY - 2021/2/17

Y1 - 2021/2/17

N2 - The primary goal of this paper is to present a model of snow surface albedo accounting for small-scale surface roughness effects. The model is based on photon recollision probability, and it can be combined with existing bulk volume albedo models, such as Two-streAm Radiative TransfEr in Snow (TARTES). The model is fed with in situ measurements of surface roughness from plate profile and laser scanner data, and it is evaluated by comparing the computed albedos with observations. It provides closer results to empirical values than volume-scattering-based albedo simulations alone. The impact of surface roughness on albedo increases with the progress of the melting season and is larger for larger solar zenith angles. In absolute terms, small-scale surface roughness can decrease the total albedo by up to about 0.1. As regards the bidirectional reflectance factor (BRF), it is found that surface roughness increases backward scattering especially for large solar zenith angle values.

AB - The primary goal of this paper is to present a model of snow surface albedo accounting for small-scale surface roughness effects. The model is based on photon recollision probability, and it can be combined with existing bulk volume albedo models, such as Two-streAm Radiative TransfEr in Snow (TARTES). The model is fed with in situ measurements of surface roughness from plate profile and laser scanner data, and it is evaluated by comparing the computed albedos with observations. It provides closer results to empirical values than volume-scattering-based albedo simulations alone. The impact of surface roughness on albedo increases with the progress of the melting season and is larger for larger solar zenith angles. In absolute terms, small-scale surface roughness can decrease the total albedo by up to about 0.1. As regards the bidirectional reflectance factor (BRF), it is found that surface roughness increases backward scattering especially for large solar zenith angle values.

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U2 - 10.5194/tc-15-793-2021

DO - 10.5194/tc-15-793-2021

M3 - Article

AN - SCOPUS:85100925496

SN - 1994-0416

VL - 15

SP - 793

EP - 820

JO - CRYOSPHERE

JF - CRYOSPHERE

IS - 2

ER -

Effect of small-scale snow surface roughness on snow albedo and reflectance

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