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We use Multi-Sensor Reanalysis and ground-based total ozone content (TOC) data to study total ozone variations in Antarctica near the dates of sudden stratospheric warmings (SSW). Three events were analyzed, including the warmings in 1988, 2002 (major warming), and 2019.
We tracked adult emperor penguins from Rothschild Island, west Antarctic Peninsula in 2015/2016 during a summer with extensive sea ice of long duration, contrasting with past years of reduced sea ice extent associated with the recent, rapid, warming trend across the region.
Exopolysaccharides (EPSs) are high molecular weight … carbohydrate polymers that make up a substantial … component of the extracellular polymers surrounding … most microbial cells in the marine environment.
Planetary waves with periods between two and four days in the middle atmosphere over … Antarctica are characterized using one year of data from the medium-frequency spaced … antenna (MFSA) radars at Scott Base, Rothera, and Davis. In order to investigate the origin … of the observed waves…
A high-latitude tide basis function that describes the major migratingand non-migrating components of the semidiurnal and … diurnal tide can be fitted to wind data using linear least-squares fitting techniques. MF radars at Davis (695, 78E), Syowa (695, 40E), Rothera (685, 68W) and Scott Base (785…
We present wind and temperature profiles at Dome C measured … by balloon born sonds during the polar summer. Data from 197 … flights have been processed for 4 campaigns between 2000 and 2004. We show the exceptionnal wind conditions at Dome C, Average ground … wind speed is 3.6 m/s.
Since the first lidar observation of polar mesospheric clouds (PMC) in 1989 by a Na lidar at Andoya, extensive PMC observations have been made by lidars in both the northern and southern hemispheres. The lidar observations provide precise information on PMC altitudes, layer structure…
The international cooperation that makes Antarctica a continent for science has enabled … observations of the Antarctic middle atmosphere that are not possible anywhere else on … Earth. Atmospheric radars operated by Australia (Davis), Japan (Syowa), the UK and the … USA (Rothera)…
The atmospheric tides are a dominant and persistent feature of the mesosphere and lowerthermosphere … region of the atmosphere which spans from 80 to 120km above the Earth’s … surface. The tides…
Abstract. The discovery of an abundance of microorganisms that flourish in a diverse range of environments, from the frigid waters of the Antarctic, to the superheated waters of the hydrothermal vents, at the bottom of 11-km … deep ocean trenches and in salt-saturated lakes…
[1] Temperature observations between 20 and 120 km … from the SABER instrument on the TIMED spacecraft are … used to investigate the nature of planetary wave activity … during the 60 days prior to the midwinter stratospheric … warming that commenced on 26 September…
We present a comprehensive protistan data set for the southern Indian sector of the Southern Ocean, sampled during the Austral summer (January-March) of 1996. Cells from discrete water bottle samples were examined to gain both qualitative and quantitative information on the composition…
The populations of two non-native Dipterans have been established at two Antarctic research stations … since at least 1998. Both belong to Sciaridae ("black … fungus midge"), and have been determined to the genus … Lycoriella. At Rothera Research Station, Antarctic … Peninsula…
Abstract. A good astronomical site must fulfill several criteria including low atmospheric turbulence and low wind speeds. is therefore important to have a detailed knowledge of the temperature and wind conditions of a location considered for future … astronomical research.