Seasonal soil active layer measurements from a Circumpolar Active Layer Monitoring (CALM) grid, (U12A) Toolik 1 kilometer grid, Alaska. ...

• Main Author: Shiklomanov, Nikolay
• Format: Dataset
• Language: English
• Published: NSF Arctic Data Center 2023
• Subjects: Permafrost; Earth Science; Cryosphere; Active Layer; Grid; 500 Meters to 1 Kilometer; Probes; Field Survey; Weekly to Monthly; Active layer monitoring; Active layer thickness; permafrost; Alaska
• Online Access: https://dx.doi.org/10.18739/a2tb0xx1t; https://arcticdata.io/catalog/view/doi:10.18739/A2TB0XX1T

This site is registered with the Circumpolar Active Layer Monitoring (CALM) program. It is one among a network of sites that represent a coordinated effort to standardize the collection and access to thaw measurements in representative undisturbed permafrost landscapes. This dataset contains long-term spatial thaw depth observations using mechanical probing on dates indicated by file column headers. To ensure relative consistency within the record, end-of-season measurement dates are within the same Julian calendar week during the height of the thaw season (mid-August to mid-September). It is important to note that the date of maximum annual thaw, interpreted as the active layer thickness, can vary from year to year and between sites. ...