Arctic Tundra Flux Study Across Alaska's Kuparuk River Basin

24 sites along a 317-km transect from the Arctic coast to the treeline in Alaska were sampled during the 1994-1996 growing seasons. The dataset contains measurements of CO2 and water vapor fluxes alongside ecosystem characteristics, collected by ORNL_CLOUD. This spatially extensive study was designed to understand the factors controlling gas exchange across diverse climate, physiography, soil moisture, and vegetation types.

Use Cases

• Analyzing relationships between surface air temperature, soil temperature, and CO2 flux across different vegetation types.
• Modeling regional water vapor exchange using evaporation, humidity, and net radiation measurements.
• Studying the impact of photosynthetically active radiation (PAR) and solar radiation on ecosystem productivity.
• Investigating how surface pressure and wind patterns influence carbon and water flux dynamics in the Arctic.
• Comparing flux rates and environmental controls across stratified sites representing the region's climate and physiographic ranges.

Strengths

• Data collection was spatially stratified across 24 sites to sample the full range of climate, vegetation, and soil conditions within the region.
• Measurements were taken during the middle of the short growing season (1994-1996) to maximize phenological comparability across sites.
• The study design allows for comparison of vegetation types across different provinces and climatic zones with some replication.

Limitations

• Key metadata such as row count, column names, and exact file size are unavailable from all provided sources.
• There is a conflict in the 'last updated' date: one source lists 1997-01-01, while others list 2026-03 13, suggesting possible metadata refresh versus original publication.

Provenance

Source

ORNL_CLOUD

Collection Method

Field measurements of CO2/water vapor fluxes and ecosystem characteristics at stratified sites for 1-2 weeks each during the growing season.

Time Range

1994-1996 (growing seasons)

Freshness

2026-03-13 14:55:34.752920

Geography

317-km transect from the Arctic coast to the latitudinal treeline in Alaska's Kuparuk River Basin.