Polar Research Institute of China

Summer Marginal Ice Zone: A Potential Predictor for September Arctic Sea Ice Extent

Abstract The Arctic summer marginal ice zone (MIZ) represents a growing fraction of total sea ice extent (SIE), yet its predictive performance for September Arctic sea ice remains unknown. This study reveals that summer (June–August) MIZ area fraction is an optimal predictor for...

Microfluidic-based high-throughput isolation enhances the recovery of novel strains and diversity from Arctic soil microbiome

ABSTRACT Microbial cultivation remains essential for understanding the physiology, ecology, and biotechnological potential of environmental microbes, yet conventional plate-based methods (CPM) recover only a minute fraction of the environmental microbiome. Polar regions, particul...

A 400‐Year Antarctic Ice‐Core Perchlorate Record Reveals Variability in Stratospheric Chlorine Chemistry

Abstract Perchlorate (ClO 4 − ) in polar ice preserves past chlorine oxidation chemistry; however, multi‐centennial Antarctic ClO 4 − records and the mechanisms controlling their variability remain poorly constrained. Here, we present the first 400‐year (1616−2016) ClO 4 − record...

CRUX-1.0: an automatic GHG and Ozone observation system for inland Antarctica Plateau

Abstract. Antarctic inland regions, as critical hubs for global climate change monitoring, suffer from a lack of reliable long-term greenhouse gas (GHG) observation systems due to extremely low temperatures, strong winds, and limited logistical/energy support. To address this gap...

Year-Round High-Resolution Sea Ice Freeboard Retrieval Using ICESat-2 ATL03 Photon Data

Abstract. Arctic sea ice freeboard is critical for estimating ice thickness and characterizing surface morphology, yet it remains poorly constrained, especially during the melt season due to limitations in conventional altimetry products. The ICESat-2 ATL07 product retrieves surf...

Experimental investigation of the direct shear strength parameters of compacted snow

Abstract. Compacted snow is utilized as a building material in various construction and engineering applications across global high-latitude regions. For the safety assessment of snow and ice structures in cold regions, cohesion and internal friction angle are key shear strength...

Antarctic Circumpolar Current creates a boundary limiting the meridional dispersal of bacteria in the Southern Ocean

Impact statement As the world's largest ocean current in terms of volume transport, the Antarctic Circumpolar Current (ACC) significantly affects the movement of heat and water in the Southern Ocean. However, the impact of the ACC on the biogeographic distribution of marine bacte...

Early-mid Holocene Ross Sea extreme wave heights reflect sea ice retreat and ocean-atmosphere interactions

Abstract Antarctic coastal systems preserve valuable records of postglacial environmental change and extreme storm events. On Inexpressible Island, Ross Sea, we integrated geomorphic mapping, boulder measurements, exposure dating, radiocarbon constraints, and hydrodynamic analysi...