Passive microwave Arctic sea ice melt onset dates from the advanced horizontal range algorithm 1979-2022.

ABSTRACT: The onset of the summer melt season is a key stage of the Arctic sea ice seasonal cycle and is an indicator of climate change. Surface melting of the bare or snow-covered sea ice is detected using passive microwave satellite observations. The data set presented here is a 44 year record of Arctic sea ice annual melt onset (MO) dates for 1979-2022 produced using an updated version of the Advanced Horizontal Range Algorithm (AHRA). This data product contains annual maps of the sea ice MO date and a set of descriptive statistics summarizing the data. This paper describes a new update of the AHRA methodology, now AHRA V5, including key changes to the algorithm starting date and sea ice mask methodology to improve estimates of early-season MO dates especially near the sea ice periphery. AHRA V5

SUBMITTER: Bliss AC 

PROVIDER: S-EPMC10692222 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature