Short-Term Meteorological and Environmental Signals Recorded in a Firn Core from a High-Accumulation Site on Plateau Laclavere, Antarctic Peninsula

High-accumulation sites are crucial for understanding the patterns and mechanisms of climate environmental change in Antarctica since they allow gaining high-resolution proxy records from firn ice. Here, we present new glacio- isotope-geochemical data at sub-annual resolution a core retrieved an ice cap on Plateau Laclavere (LCL), northern Antarctic Peninsula, covering period 2012–2015. The signals two volcanic eruptions forest fire events South America could be identified non-sea-salt sulphur black carbon records, respectively. Mean annual snow accumulation LCL amounts to 2500 kg m−2 a−1 exhibits low inter-annual variability. Time series δ18O, δD d excess show no seasonal cyclicity, which may result (1) reduced temperature amplitude due maritime (2) post-depositional processes. stratigraphy indicates strong surface melt during austral summers 2013 2015, likely related large-scale warm-air advection lower latitudes temporal variations sea extent Bellingshausen-Amundsen Sea. is highly valuable natural archive it captures regional meteorological as well their connection American continent.