Results 21 to 30 of about 7,074,149 (271)

A model study of the January 2006 low total ozone episode over Western Europe and comparison with ozone sonde data [PDF]

Atmospheric Chemistry and Physics, 2009
Total column and stratospheric ozone levels at mid-latitudes often reveal strong fluctuations on time scales of days caused by dynamic processes. In some cases the total ozone column is distinctly reduced below climatological values.
A. Mangold, J.-U. Grooß, H. De Backer, O. Kirner, R. Ruhnke, R. Müller   +5 more
doaj   +1 more source

Ozone Variation Trends under Different CMIP6 Scenarios

Atmosphere, 2021
This study compares and analyzes simulations of ozone under different scenarios by three CMIP6 models (IPSL-CM6A, MRI-ESM2 and CESM-WACCM). Results indicate that as the social vulnerability and anthropogenic radiative forcing is increasing, the change of
Lin Shang, Jiali Luo, Chunxiao Wang
doaj   +1 more source

Reconciliation of halogen-induced ozone loss with the total-column ozone record [PDF]

Nature Geoscience, 2014
The observed depletion of the ozone layer from the 1980s onwards is attributed to halogen source gases emitted by human activities. However, the precision of this attribution is complicated by year-to-year variations in meteorology, that is, dynamical variability, and by changes in tropospheric ozone concentrations.
Shepherd, T. G., Plummer, D. A., Scinocca, J. F., Hegglin, M. I., Fioletov, V. E., Reader, M. C., Remsberg, E., Clarmann, T. von, Wang, H. J.   +8 more
openaire   +2 more sources

A new ENSO index derived from satellite measurements of column ozone [PDF]

Atmospheric Chemistry and Physics, 2010
Column Ozone measured in tropical latitudes from Nimbus 7 total ozone mapping spectrometer (TOMS), Earth Probe TOMS, solar backscatter ultraviolet (SBUV), and Aura ozone monitoring instrument (OMI) are used to derive an El Nino-Southern Oscillation (ENSO)
J. R. Ziemke, S. Chandra, L. D. Oman, P. K. Bhartia   +3 more
doaj   +1 more source

A satellite‐derived ozone climatology for balloonsonde estimation of total column ozone [PDF]

Journal of Geophysical Research: Atmospheres, 1997
The standard technique for computing total column ozone from a balloonsonde measurement includes an extrapolation of the measured ozone profile to altitudes above the balloon burst altitude. This total column calculation can be improved by using a monthly average ozone climatology based on ozone profile measurements from the solar backscattered ...
R. D. McPeters, G. J. Labow, B. J. Johnson   +2 more
openaire   +1 more source

Multi-model assessment of stratospheric ozone return dates and ozone recovery in CCMVal-2 models [PDF]

Atmospheric Chemistry and Physics, 2010
Projections of stratospheric ozone from a suite of chemistry-climate models (CCMs) have been analyzed. In addition to a reference simulation where anthropogenic halogenated ozone depleting substances (ODSs) and greenhouse gases (GHGs) vary with time ...
V. Eyring, I. Cionni, G. E. Bodeker, A. J. Charlton-Perez, D. E. Kinnison, J. F. Scinocca, D. W. Waugh, H. Akiyoshi, S. Bekki, M. P. Chipperfield, M. Dameris, S. Dhomse, S. M. Frith, H. Garny, A. Gettelman, A. Kubin, U. Langematz, E. Mancini, M. Marchand, T. Nakamura, L. D. Oman, S. Pawson, G. Pitari, D. A. Plummer, E. Rozanov, T. G. Shepherd, K. Shibata, W. Tian, P. Braesicke, S. C. Hardiman, J. F. Lamarque, O. Morgenstern, J. A. Pyle, D. Smale, Y. Yamashita   +34 more
doaj   +1 more source

The Spatiotemporal Variations of  Total Column Ozone Concentration over Ethiopia

AIP Advances, 2022
Abstract We have studied the spatiotemporal characteristics of ozone concentration over Ethiopia using Ozone Mapper and Profiling Suite (OMPS) Satellite measurements. Daily total column ozone measurements of 252 data points with spatial resolution 1 ◦ × 1 ◦ for the study area and its surrounding during the period 2012 – 2020 have been analyzed.
Abebaw Bizuneh Alemu, Abdu Mohammed Seid, Baylie Damtie, U. Jaya Parakash Raju   +3 more
openaire   +2 more sources

SPATIAL AND TEMPORAL VARIATION OF TOTAL AND TROPOSPHERIC OZONE COLUMNS OVER CHINA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019
In this study, total ozone columns collected from nine sites of the AErosol RObotic NETwork (AERONET) in China are used to evaluate total ozone column monthly mean products of the Ozone Monitoring Instrument (OMI).
X. Li, Y. J. Li, Q. M. Ma, J. Chen, F. Chen, X. Y. Yang, Q. J. Wang   +6 more
doaj   +1 more source

On the assimilation of total-ozone satellite data [PDF]

Annales Geophysicae, 1996
A two-dimensional model for advection and data assimilation of total-ozone data has been developed. The Assimilation Model KNMI (AMK) is a global model describing the transport of the column amounts of ozone, by a wind field at a single pressure level,
P. F. Levelt, M. A. Allaart, H. M. Kelder   +2 more
doaj   +1 more source

Stratospheric Warming Events in the Period January–March 2023 and Their Impact on Stratospheric Ozone in the Northern Hemisphere

Atmosphere, 2023
In this investigation, a comparison is presented between variations in temperature and ozone concentration at different altitude levels in the stratosphere for the Northern Hemisphere in the conditions of Sudden Stratospheric Warming (SSW) for the period
Plamen Mukhtarov, Nikolay Miloshev, Rumiana Bojilova   +2 more
doaj   +1 more source