Snow ALbedo eVOlution (SALVO) Campaign Spectral Albedo and Related Measurements from April - June, 2024 in Utqiagivk, AK

Clemens-Sewall, David; Espinosa, Zac; Oggier, Marc; Sturm, Matthew; Webster, Melinda; Wesen, Serina; Wilson, Phillip; Delamere, Jennifer

doi:10.5439/2570823

Title: Snow ALbedo eVOlution (SALVO) Campaign Spectral Albedo and Related Measurements from April - June, 2024 in Utqiagivk, AK

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Abstract

A field-portable spectroradiometer, referred to herein as an ‘ASD’, was used to make spatially-distributed spectral albedo (350 – 2500 nm) measurements on tundra and sea ice surfaces. The ASD detector is carried in a backpack and controlled via a computer mounted on the front of the operator (see Figure 1). The ASD measures the spectral irradiance from a fiber optic cable that is routed from the backpack to a custom, gooseneck cosine collector mounted on the end of a 1-m long boom (Grenfell and Perovich, 2008). The boom was held at hip height (approximately 1 m) and had an integrated bubble level for levelling. To make an albedo measurement, first the operator collect an incident (down-welling) irradiance, followed by a reflected (up-welling) measurement. The time between incident and reflected measurements was typically between 11 and 26 seconds (interquartile range). For each measurement, 10 spectra are averaged together. Albedo is calculated as the ratio of the reflected to incident measurement, which obviates the need for absolute radiometric calibration. Albedo measurements were taken parallel to the 200-m albedo lines at 5-m increments (41 measurements) ~1 m south of the line. While the ASD operator was making measurements, an assistant kept notes on themore »« less

Authors:

;

; Wesen, Serina;

;

Publication Date:: Tue Jul 01 00:00:00 EDT 2025

DOE Contract Number:: AC05-00OR22725

Research Org.:: Atmospheric Radiation Measurement User Facility

Sponsoring Org.:: USDOE Office of Science (SC), Biological and Environmental Research (BER)

Collaborations:: PNNL, BNL, ANL, ORNL

Subject:: ASD Spectroradiometer; Incident solar irradiance; Reflected solar irradiance; Surface albedo, spectral

OSTI Identifier:: 2570823

DOI:: https://doi.org/10.5439/2570823

Citation Formats


                    Clemens-Sewall, David, Espinosa, Zac, Oggier, Marc, Sturm, Matthew, Webster, Melinda, Wesen, Serina, Wilson, Phillip, and Delamere, Jennifer. Snow ALbedo eVOlution (SALVO) Campaign Spectral Albedo and Related Measurements from April - June, 2024 in Utqiagivk, AK.  United States: N. p., 2025. 
        Web.  doi:10.5439/2570823.

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                    Clemens-Sewall, David, Espinosa, Zac, Oggier, Marc, Sturm, Matthew, Webster, Melinda, Wesen, Serina, Wilson, Phillip, & Delamere, Jennifer. Snow ALbedo eVOlution (SALVO) Campaign Spectral Albedo and Related Measurements from April - June, 2024 in Utqiagivk, AK.  United States.  doi:https://doi.org/10.5439/2570823

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                    Clemens-Sewall, David, Espinosa, Zac, Oggier, Marc, Sturm, Matthew, Webster, Melinda, Wesen, Serina, Wilson, Phillip, and Delamere, Jennifer. 2025.  
"Snow ALbedo eVOlution (SALVO) Campaign Spectral Albedo and Related Measurements from April - June, 2024 in Utqiagivk, AK".  United States.  doi:https://doi.org/10.5439/2570823.  https://www.osti.gov/servlets/purl/2570823. Pub date:Tue Jul 01 00:00:00 EDT 2025

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@article{osti_2570823,

  title        = {Snow ALbedo eVOlution (SALVO) Campaign Spectral Albedo and Related Measurements from April - June, 2024 in Utqiagivk, AK},

  author       = {Clemens-Sewall, David and Espinosa, Zac and Oggier, Marc and Sturm, Matthew and Webster, Melinda and Wesen, Serina and Wilson, Phillip and Delamere, Jennifer},

  abstractNote = {A field-portable spectroradiometer, referred to herein as an ‘ASD’, was used to make spatially-distributed spectral albedo (350 – 2500 nm) measurements on tundra and sea ice surfaces. The ASD detector is carried in a backpack and controlled via a computer mounted on the front of the operator (see Figure 1). The ASD measures the spectral irradiance from a fiber optic cable that is routed from the backpack to a custom, gooseneck cosine collector mounted on the end of a 1-m long boom (Grenfell and Perovich, 2008). The boom was held at hip height (approximately 1 m) and had an integrated bubble level for levelling. To make an albedo measurement, first the operator collect an incident (down-welling) irradiance, followed by a reflected (up-welling) measurement. The time between incident and reflected measurements was typically between 11 and 26 seconds (interquartile range). For each measurement, 10 spectra are averaged together. Albedo is calculated as the ratio of the reflected to incident measurement, which obviates the need for absolute radiometric calibration. Albedo measurements were taken parallel to the 200-m albedo lines at 5-m increments (41 measurements) ~1 m south of the line. While the ASD operator was making measurements, an assistant kept notes on the scan number associated with each measurement, the surface type (see below), and collected photos of each measurement (see companion oblique photos data archive). Measurements were made within 3 hours of solar noon.},

  doi          = {10.5439/2570823},

  journal      = {},

  number       = ,

  volume       = ,

  place        = {United States},

  year         = {Tue Jul 01 00:00:00 EDT 2025},

  month        = {Tue Jul 01 00:00:00 EDT 2025}

}

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DOI: https://doi.org/10.5439/2570823

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