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The zonal asymmetry in the Antarctic total ozone column (TOC) has been widely studied in … recent decades. However, little is known about how spatially dependent the TOC response is to sudden … stratospheric warmings (SSWs).
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.
The zonal wavenumber spectrum of planetary waves in the atmosphere above Antarctica was studied in two contrasting years: in 2019 when there was a sudden stratospheric warming (SSW), and in 2020 when the Antarctic stratospheric vortex was unusually strong and long-lived.
The parameterization of gravity waves in the NCAR Whole Atmosphere Community Climate Model (WACCM) includes orographic, convective, and frontal sources. Even with these, the model simulates temperatures in the Antarctic lower stratosphere during winter and spring that are much lower than observed.
The Southern Hemisphere mid-latitudes, particularly the area around south-eastern Australia and New Zealand, has been suggested as one of the regions where ozone recovery might first be detected…
The composition of the stratosphere is driven by transport, temperatures and processes in the tropical tropopause layer – this has implications for ozone, radiation, and surface climate. The properties of the tropical tropopause layer have changed in recent decades, e.g.
The Southern Hemisphere (SH) is relatively data sparse in terms of ozone monitoring, particularly in the mid-latitudes where there are few long term records. The Australian Bureau of Meteorology possesses continuous datasets from the Australian region dating back to the 1950s (Dobson) or 1960s…
Results of ongoing investigations into patterns of interannual variability in total column ozone as measured by the Bureau of Meteorology’s Dobson network over the Australian region are presented. At all latitudes, total column ozone increases during winter and spring…
Ozone climatologies are presented for a number of locations in the Australian region, making use of … both total ozone and ozone profile data, as measured by the Bureau of Meteorology’s Dobson and … ozonesonde networks. For mid-latitude sites (Melbourne and Macquarie Island)…
Abstract. A pilot study assessment of the potential exposure to solar ultraviolet radiation (UVR) of expeditioners on the Australian Antarctic resupply voyages was carried out over the summer of 2004/05 using UVR sensitive polysulphone (PS) badges.
During early August 2005, the size of the Antarctic ozone hole, as measured by the area … enclosing the 220 Dobson Unit contour of the total ozone column, grew more rapidly than … previously observed for that time of year. Using global ozone and meteorological data…
A group of sea-ice-derived psychrophilic bacterial strains possessing the unusual ability to synthesize the polyunsaturated fatty acids eicosapentaenoic acid (20:5w3) and arachidonic acid (20:4w6) belong to the Family Flavobacteriaceae (Flexibacter–Bacteroides–Flavobacterium phylum)…