Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water Equivalent

Abstract Snow water equivalent (SWE) distribution at fine spatial scales (≤10 m) is difficult to estimate due to modeling and observational constraints. However, the distribution of SWE throughout the spring snowmelt season is often correlated to the timing of snow disappearance. Here, we show that...

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Main Authors: Justin M. Pflug, Kehan Yang, Nicoleta Cristea, Emma T. Boudreau, Carrie M. Vuyovich, Sujay V. Kumar
Format: Article
Language:English
Published: Wiley 2024-11-01
Series:Water Resources Research
Subjects:
Online Access:https://doi.org/10.1029/2024WR037983
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author Justin M. Pflug
Kehan Yang
Nicoleta Cristea
Emma T. Boudreau
Carrie M. Vuyovich
Sujay V. Kumar
author_facet Justin M. Pflug
Kehan Yang
Nicoleta Cristea
Emma T. Boudreau
Carrie M. Vuyovich
Sujay V. Kumar
author_sort Justin M. Pflug
collection DOAJ
description Abstract Snow water equivalent (SWE) distribution at fine spatial scales (≤10 m) is difficult to estimate due to modeling and observational constraints. However, the distribution of SWE throughout the spring snowmelt season is often correlated to the timing of snow disappearance. Here, we show that snow cover maps generated from PlanetScope's constellation of Dove Satellites can resolve the 3 m date of snow disappearance across seven alpine domains in California and Colorado. Across a 5‐year period (2019–2023), the average uncertainty in the date of snow disappearance, or the period of time between the last date of observed snow cover and the first date of observed snow absence, was 3 days. Using a simple shortwave‐based snowmelt model calibrated at nearby snow pillows, the PlanetScope date of snow disappearance could be used to reconstruct spring SWE. Relative to lidar SWE estimates, the SWE reconstruction had a spatial coefficient of correlation of 0.75, and SWE spatial variability that was biased by 9%, on average. SWE reconstruction biases were then improved to within 0.04 m, on average, by calibrating snowmelt rates to track the spring temporal evolution of fractional snow cover observed by PlanetScope, including fractional snow cover over the full modeling domain, and across domain subsections where snowmelt rates may differ. This study demonstrates the utility of fine‐scale and high‐frequency optical observations of snow cover, and the simple and annually repeatable connections between snow cover and spring snow water resources in regions with seasonal snowpack.
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spelling doaj-art-53adb6d80b434428b95c3398178b6e4b2025-08-23T13:05:51ZengWileyWater Resources Research0043-13971944-79732024-11-016011n/an/a10.1029/2024WR037983Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water EquivalentJustin M. Pflug0Kehan Yang1Nicoleta Cristea2Emma T. Boudreau3Carrie M. Vuyovich4Sujay V. Kumar5Hydrological Sciences Laboratory NASA Goddard Space Flight Center Greenbelt MD USAM3 Works LLC Boise ID USADepartment of Civil and Environmental Engineering University of Washington Seattle WA USADepartment of Civil and Environmental Engineering University of Washington Seattle WA USAHydrological Sciences Laboratory NASA Goddard Space Flight Center Greenbelt MD USAHydrological Sciences Laboratory NASA Goddard Space Flight Center Greenbelt MD USAAbstract Snow water equivalent (SWE) distribution at fine spatial scales (≤10 m) is difficult to estimate due to modeling and observational constraints. However, the distribution of SWE throughout the spring snowmelt season is often correlated to the timing of snow disappearance. Here, we show that snow cover maps generated from PlanetScope's constellation of Dove Satellites can resolve the 3 m date of snow disappearance across seven alpine domains in California and Colorado. Across a 5‐year period (2019–2023), the average uncertainty in the date of snow disappearance, or the period of time between the last date of observed snow cover and the first date of observed snow absence, was 3 days. Using a simple shortwave‐based snowmelt model calibrated at nearby snow pillows, the PlanetScope date of snow disappearance could be used to reconstruct spring SWE. Relative to lidar SWE estimates, the SWE reconstruction had a spatial coefficient of correlation of 0.75, and SWE spatial variability that was biased by 9%, on average. SWE reconstruction biases were then improved to within 0.04 m, on average, by calibrating snowmelt rates to track the spring temporal evolution of fractional snow cover observed by PlanetScope, including fractional snow cover over the full modeling domain, and across domain subsections where snowmelt rates may differ. This study demonstrates the utility of fine‐scale and high‐frequency optical observations of snow cover, and the simple and annually repeatable connections between snow cover and spring snow water resources in regions with seasonal snowpack.https://doi.org/10.1029/2024WR037983snowremote sensingsnowmeltmodelingdistribution
spellingShingle Justin M. Pflug
Kehan Yang
Nicoleta Cristea
Emma T. Boudreau
Carrie M. Vuyovich
Sujay V. Kumar
Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water Equivalent
Water Resources Research
snow
remote sensing
snowmelt
modeling
distribution
title Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water Equivalent
title_full Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water Equivalent
title_fullStr Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water Equivalent
title_full_unstemmed Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water Equivalent
title_short Using Commercial Satellite Imagery to Reconstruct 3 m and Daily Spring Snow Water Equivalent
title_sort using commercial satellite imagery to reconstruct 3 m and daily spring snow water equivalent
topic snow
remote sensing
snowmelt
modeling
distribution
url https://doi.org/10.1029/2024WR037983
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