Faculty

Institution

Unit

Venue

Jeffrey Welker

Professor

University of Alaska Anchorage

Affiliations

College of Arts and Sciences

Department Of Biological Sciences

Environment and Natural Resources Institute (ENRI)

Jeffrey Welker is a Professor at the University of Alaska Anchorage, where he specializes in cold region science, cryosphere dynamics, and Arctic ecosystem ecology. His research integrates climatology, atmospheric science, and stable isotope geochemistry to investigate climate-driven changes in tundra, permafrost, and hydrological systems. Recent work includes quantifying permafrost thaw impacts on soil carbon transit times, aerosol dynamics during sea ice melt, and isotopic imprints of snow sublimation. He has led major collaborative projects, including the MOSAiC expedition and ITEX-AON network, with funding exceeding $2.5 million from the U.S. National Science Foundation.

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Jeffrey Welker

University of Alaska Anchorage

Professor

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environmental science climate change ecology earth science cold region science cryosphere climatology ecosystems atmospheric science planetary sciences climate dynamics permafrost arctic structure climatic change terrestrial ecology biogeochemistry vegetation science global ecology forest ecology plant science global change periglacial process arid environments extreme environments ecohydrology applied ecology hydrometeorology plant ecology sea ice paleoclimatology glacial process forest ecosystems atmospheric research climate variability water science geophysical research hydrological process isotope geochemistry animal ecology functional ecology soil ecology glaciers terrestrial ecosystems regional climate response soil science arctic engineering northern alaska phenology ecosystem adaptation arctic alaska high arctic ecosystem interactions nw greenland terrestrial ecosystem productivity wildlife ecology foraging hydrological sciences landscape ecology global warming soil biogeochemical cycling arctic tundra snow depth high arctic ecosystem climate change effects fungal diversity oxygen isotopes vegetation history simulated environmental change plant phenology winter snow northwest greenland tundra plants deciduous shrubs experimental manipulations phenological mismatch shrub expansion geobiology marine chemistry environmental degradation biodiversity total environment restoration ecology environmental research deforestation ecological engineering biogeography pedosphere organic geochemistry ecological indicator ecological monograph palaeogeography biology ecological applications carbon sequestration aquatic ecosystems physical geography community (ecology) marine micropaleontology freshwater biology geography human impacts on the environment ecosystem services wetlands paleoecology hydrobiologia marine systems natural resource management global change biology marine biology

Notable Scholarly Works

Notable Federal Grants

Collaborators

A Regional Aerosol Growth Event During the Onset of Sea Ice Melt. (2026)

earth scienceatmospheric sciencesea iceaerosol scienceaerosol formation

Climate-Driven Extreme Winter Thaw Triggers Summerlike Microbial Activity in a Subarctic Stream. (2026)

climate changepermafrostenvironmental microbiologyclimatic changeenvironmental sciencemicrobial activitysubarctic streamextreme environmentsmicrobial diversityecologyfreshwater biologymicrobial ecology

Delineating Seasonal Shifts in Reindeer Habitat and Diet Selection by Integrating Gps Telemetry and Stable Isotope Analysis. Wildlife Biology (2026)

wildlife ecologyforagingecological indicatorseasonal shiftswildlifereindeer habitatgeographyanimal ecologymovement ecologyecologyglobal change biologygps telemetrybiogeography

Ny-ÅLesund Atmospheric Water Vapour Isotope Data (1 Jan-31 May 2022). Open MIND (2026)

atmospheric researchearth scienceatmospheric conditionatmospheric environmentisotope geochemistryatmospheric scienceatmospheric measurement techniqueenvironmental sciencejan-31 may 2022atmospheric chemistryatmospheric processwater science

Permafrost Thaw Redistributes Soil Carbon Age and Shortens Transit Times Across Arctic Tundra Soils. Zenodo (CERN European Organization for Nuclear Research) (2026)

soil carbon sequestrationpermafrostcarbon sequestrationearth scienceenvironmental sciencecryospherearctic tundra soilspermafrost thawsoilsoil carbon cyclesoil dynamicscarbon agecold region science

Snow Structure Modulates the Isotopic Imprint of Sublimation. (2026)

Supplementary Material to"Tundraflux: A Database of Ecosystem Respiration With Biotic and Abiotic Metadata From Arctic and Alpine Tundra Warming Experiments". (2026)

climate changealpine tundrapermafrostsupplementary materialecosystem respirationbiogeochemistryenvironmental sciencecryosphereecosystemsecologyecological indicatorarctic structurecold region science

Arctic Surface Snow Interactions With the Atmosphere: Spatio-Temporal Isotopic Variability During the Mosaic Expedition. Elementa Science of the Anthropocene (2025)

climate changeatmospheric researchearth sciencemeteorologyatmospheric scienceearth system sciencesea icemosaic expeditionclimate dynamicsgeographyspatio-temporal isotopic variabilitycryosphereperiglacial processclimatologyarctic structurecold region science

Changing Winter Landscapes: Extreme Weather Events and Meanings of Snow for SáMi Reindeer Herders. ARCTIC (2025)

climate changeanthropologyarctic engineeringextreme weather eventsgeographysámi reindeer herdersextreme environmentswinter landscapesarctic structurecold region science

Does Reindeer Grazing Dictate Understory Co2 Exchange Responses to Snow Depth Changes in Boreal Forests?. (2025)

carbon sequestrationforest ecologyecosystem adaptationterrestrial ecosystemsenvironmental scienceforest ecosystemsecosystemssnow depth changesecologyterrestrial ecosystem productivityboreal forests

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Jeffrey Welker

Professor

University of Alaska Anchorage

Affiliations

College of Arts and Sciences

Department Of Biological Sciences

Environment and Natural Resources Institute (ENRI)

Honors

Create free account to unlock more features

Experiences

Create free account to unlock more features

Education

Create free account to unlock more features

Jeffrey Welker

University of Alaska Anchorage

Professor

You can click a keyword to filter the displayed items

Notable Scholarly Works

Notable Federal Grants

Collaborators

A Regional Aerosol Growth Event During the Onset of Sea Ice Melt. (2026)

earth scienceatmospheric sciencesea iceaerosol scienceaerosol formation

Climate-Driven Extreme Winter Thaw Triggers Summerlike Microbial Activity in a Subarctic Stream. (2026)

Delineating Seasonal Shifts in Reindeer Habitat and Diet Selection by Integrating Gps Telemetry and Stable Isotope Analysis. Wildlife Biology (2026)

wildlife ecologyforagingecological indicatorseasonal shiftswildlifereindeer habitatgeographyanimal ecologymovement ecologyecologyglobal change biologygps telemetrybiogeography

Ny-ÅLesund Atmospheric Water Vapour Isotope Data (1 Jan-31 May 2022). Open MIND (2026)

Permafrost Thaw Redistributes Soil Carbon Age and Shortens Transit Times Across Arctic Tundra Soils. Zenodo (CERN European Organization for Nuclear Research) (2026)

soil carbon sequestrationpermafrostcarbon sequestrationearth scienceenvironmental sciencecryospherearctic tundra soilspermafrost thawsoilsoil carbon cyclesoil dynamicscarbon agecold region science

Snow Structure Modulates the Isotopic Imprint of Sublimation. (2026)

Supplementary Material to"Tundraflux: A Database of Ecosystem Respiration With Biotic and Abiotic Metadata From Arctic and Alpine Tundra Warming Experiments". (2026)

climate changealpine tundrapermafrostsupplementary materialecosystem respirationbiogeochemistryenvironmental sciencecryosphereecosystemsecologyecological indicatorarctic structurecold region science

Arctic Surface Snow Interactions With the Atmosphere: Spatio-Temporal Isotopic Variability During the Mosaic Expedition. Elementa Science of the Anthropocene (2025)

Changing Winter Landscapes: Extreme Weather Events and Meanings of Snow for SáMi Reindeer Herders. ARCTIC (2025)

climate changeanthropologyarctic engineeringextreme weather eventsgeographysámi reindeer herdersextreme environmentswinter landscapesarctic structurecold region science

Does Reindeer Grazing Dictate Understory Co2 Exchange Responses to Snow Depth Changes in Boreal Forests?. (2025)

carbon sequestrationforest ecologyecosystem adaptationterrestrial ecosystemsenvironmental scienceforest ecosystemsecosystemssnow depth changesecologyterrestrial ecosystem productivityboreal forests

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