Seasonal Dissolved Gases and Isotopes in Arctic Alaska Rivers, 2022

Dissolved carbon dioxide and methane concentrations with stable and radiocarbon isotopic compositions from the Sagavanirktok and Kuparuk River watersheds in Arctic Alaska. Data were collected during spring, fall, and summer of 2022, with isotopic analysis performed at the W. M. Keck Carbon Cycle Accelerator Mass Spectrometer facility at UC Irvine. This dataset is provided by NASA to support research into seasonal greenhouse gas dynamics in critical Arctic environments.

Use Cases

• Modeling seasonal greenhouse gas emission dynamics based on dissolved CO2 and CH4 concentrations.
• Tracing carbon sources and biogeochemical processes based on stable and radiocarbon isotopic compositions.
• Assessing climate change impacts on Arctic riverine systems based on multi-seasonal data from 2022.
• Calibrating or validating remote sensing or hydrological models based on in-situ gas concentration measurements.

Strengths

• Data includes both gas concentrations (CO2, CH4) and isotopic compositions, providing multiple analytical dimensions.
• Collection spans three distinct seasons (spring, fall, summer) in 2022, capturing temporal dynamics.
• Laboratory analyses were conducted at a specialized facility (W. M. Keck Carbon Cycle AMS at UC Irvine).
• Geographic focus is on two specific Arctic watersheds (Sagavanirktok and Kuparuk Rivers) on Alaska's North Slope.

Limitations

• Row count and dataset size are unknown, which may limit suitability assessment for large-scale modeling.
• Column-level documentation is absent; field semantics and data structure must be inferred after download.

Provenance

Source

National Aeronautics and Space Administration (NASA)

Collection Method

In-field separation using a degassing membrane contactor, followed by laboratory isotopic analysis.

Time Range

2022 (spring, fall, and summer seasons)

Freshness

Last updated 2026-03-12 19:46:54.896890; freshness should be verified.

Geography

Sagavanirktok and Kuparuk River watersheds, North Slope of Alaska, Arctic.