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Related Experiment Video

Updated: Nov 8, 2025

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Laser-Induced Fluorescence Emission L.I.F.E. as Novel Non-Invasive Tool for In-Situ Measurements of Biomarkers in Cryospheric Habitats

Published on: October 26, 2019

Declining greenness in Arctic-boreal lakes.

Catherine Kuhn¹, David Butman^2,3

¹School of Environmental and Forest Sciences, University of Washington, Seattle, WA 98195; ckuhn@uw.edu.

Proceedings of the National Academy of Sciences of the United States of America

|April 20, 2021

Summary

Arctic lakes are greening less due to rapid warming. This study analyzed lake color trends across Arctic-boreal North America, revealing a 15% decline in lake greenness linked to climate change.

Keywords:

Arctic Landsat boreal color lakes

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Published on: July 28, 2023

Area of Science:

Environmental Science
Remote Sensing
Ecology

Background:

Arctic-boreal regions contain the most lakes globally and are warming rapidly.
The ecological impacts of this warming on lakes are not well understood.
Lake color, observable via remote sensing, offers insights into lake ecology.

Purpose of the Study:

To analyze pan-Arctic lake color trends using historical remote sensing data.
To quantify changes in lake greenness across boreal and Arctic western North America.
To link observed lake color changes to climate warming.

Main Methods:

Analysis of 30-m Landsat growing season composites.
Quantification of lake greenness trends for over 400,000 waterbodies.
Spatial analysis of trends in relation to air temperature and precipitation data.

Main Results:

Overall decline in lake greenness by 15% across the study region (6.3 million km²).
Significant spatial variability in greenness trends observed.
Greening declines were more prevalent in areas with increased air temperature and precipitation.

Conclusions:

Warming is altering Arctic-boreal lake ecosystems, indicated by declining lake greenness.
Findings support increased lake-land surface connectivity due to warming.
Provides crucial data for targeted ecological monitoring in rapidly changing Arctic regions.