Antarctic ozone: Meteoric control of HNO3

Antarctic ozone depletion indicators

Indicators of Antarctic ozone depletion G. E. Bodeker, H. Shiona, and H. Eskes National Institute of Water and Atmospheric Research, Lauder, New Zealand Koninklijk Nederlands Meteorologisch Instituut, De Bilt, The Netherlands Received: 17 March 2005 – Accepted: 9 May 2005 – Published: 8 June 2005 Correspondence to: G. E. Bodeker ([email protected]) © 2005 Author(s). This work is licensed und...

Indicators of Antarctic ozone depletion

An assimilated data base of total column ozone measurements from satellites has been used to generate a set of indicators describing attributes of the Antarctic ozone hole for the period 1979 to 2003, including (i) daily measures of the area over Antarctica where ozone levels are below 150 DU, below 220 DU, more than 30% below 1979 to 1981 norms, and more than 50% below 1979 to 1981 norms, (ii)...

The 2007 Antarctic ozone hole

Antarctic Cooling and Ozone Losses

The fabrication of single-walled carbon nanotubes is still somewhat of an art form, and processes that either create the nanotubes at a much faster rate or of much greater length or purity is still needed. Zhu et al. (p. 884) use an improved floating catalyst method to create centimeterlong single-walled nanotube ropes that are significantly longer than those obtained from either chemical vapor...

Impact of the new HNO3-forming channel of the HO2+NO reaction on tropospheric HNO3, NOx, HOx and ozone

We have studied the impact of the recently observed reaction NO+HO2→HNO3 on atmospheric chemistry. A pressure and temperature-dependent parameterisation of this minor channel of the NO+HO2→NO2+OH reaction has been included in both a 2-D stratospheretroposphere model and a 3-D tropospheric chemical transport model (CTM). Significant effects on the nitrogen species and hydroxyl radical concentrat...