Helle Astrid Kjær

Helle Astrid Kjær is an Associate Professor at the Physics of Ice, Climate and Earth department within the Niels Bohr Institute at the University of Copenhagen. With 9 years of expertise in analyzing ice core impurities via Continuous Flow Analysis (CFA), she has participated in 6 deep ice core campaigns across both hemispheres and developed novel CFA methods for acid and phosphorus. Her fieldwork includes 9 months across 6 seasons on the Greenland ice sheet.

• Education: Cand. Scient. in Geophysics

Research Focus: Kjær's work centers on leveraging ice core impurities to reconstruct climate processes like volcanic eruptions, sea ice dynamics, and atmospheric transport. She contributes to projects such as ice2ice, investigating abrupt climate events and nutrient fluxes in polar ice.

Article Trends: Her recent publications span Greenland and Antarctic ice core chronologies, aerosol and mercury fluxes during climate transitions, and DO event spatial patterns. Methodological innovations in CFA and field equipment like the Lightweight In-Situ Analysis (LISA) box are recurring themes.

External Roles: She has held positions at institutions including the Desert Research Institute (USA), National Institute for Polar Research (Japan), and GNS Science (New Zealand).