Longitude-Dependent Decadal Changes of Total Ozone in Boreal Winter Months during 1979–92

Peters, D.; Entzian, G.

doi:10.1175/1520-0442(1999)012<1038:lddcot>2.0.co;2

Cited by 26 publications

(52 citation statements)

References 15 publications

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“…However, the TCO anomalies resulting from the polar vortex shift are often observed over Eurasia in winter rather than at all longitudes , suggesting that other factors may also affect ZAO variations. Peters and Entzian (1999) showed that there exists a close link between ZAO variations and geopotential height variations at 300 hPa on decadal time scales. The 300-hPa geopotential height is generally a good indicator of large-scale wave structure in the middle and upper troposphere.…”

Section: Introductionmentioning

confidence: 98%

“…Previous studies pointed out that the trends in the deviation of ozone from the zonal mean over some regions can reach and even exceed the zonal mean ozone trend at that latitude, particularly at 1 3 northern middle latitudes (e.g. Niu et al 1992;Hood and Zaff 1995;Peters and Entzian 1999). Therefore, the zonal asymmetric ozone (ZAO) trends at northern middle latitudes both in the past and future deserve much attention.…”

Section: Introductionmentioning

confidence: 99%

“…Some previous studies have investigated the decadal ZAO variations during the significant ozone depletion period, i.e., the pre-2000 period (e.g. Niu et al 1992;Hood and Zaff 1995;Peters et al 1996;Peters and Entzian 1999). However, the ZAO variations after 2000, when the TCO over most places began to recover, are not very well studied and the factors responsible for the ZAO trend are still not well understood.…”

Section: Introductionmentioning

confidence: 99%

“…Indeed, many previous studies have demonstrated the important role of planetary waves in modulating ZAO variations (e.g. Peters and Entzian 1999;Peters et al 2008;Efstathiou et al 2003;Hio and Yoden 2004;Grytsai et al 2005;Gabriel et al 2011;Ialongo et al 2012;Zhang et al 2015) and have proposed that the planetary waves of tropospheric origin could affect TCO through tropopause height modulations and stratosphere-troposphere exchange processes. Nevertheless, whether and to what extent planetary wave changes exert an influence on the zonally asymmetric TCO trend in the past 30 years remains unclear.…”

Section: Introductionmentioning

confidence: 99%

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Zonally asymmetric trends of winter total column ozone in the northern middle latitudes

et al. 2018

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Using various satellite-based observations, a linear ozone transport model (LOTM), a chemistry-climate model (WACCM3) and an offline chemical transport model (SLIMCAT), zonally asymmetric trends of the total column ozone (TCO) in the northern middle latitudes during winter for the period 1979-2015 are analyzed and factors responsible for the trends are diagnosed. The results reveal that there are significant negative TCO trends over the North Pacific and positive TCO trends over the northwestern North America. The zonally asymmetric TCO trends are mainly contributed by the trends in partial column ozone in the upper troposphere and lower stratosphere (UTLS) which are closely related to the long-term changes of geopotential height in the troposphere. Furthermore, the trends of geopontential height in the UTLS are mainly modulated by pattern changes in the Arctic Oscillation (AO), the Cold Ocean-Warm Land (COWL) and the North Pacific (NP) index. Accordingly, the zonally asymmetric TCO trends can be largely reconstructed by the trends of the above three teleconnection patterns. Sea surface temperature (SST) changes over the Pacific Ocean and the Atlantic Ocean can also exert a significant contribution to the zonally asymmetric TCO trends through their influence on the COWL and NP patterns. In addition, chemical ozone loss partially offsets the positive trends in zonal TCO anomalies over Central Siberia and enhances the positive TCO trends over northwestern North America. However, the contribution of chemical processes to the zonally asymmetric TCO trends is relatively smaller than that of dynamical transport effects. Interpreting the zonally asymmetric TCO trends and their responsible factors would be helpful for accurately predicting the stratospheric ozone return date in the northern middle latitudes.

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Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Zonally asymmetric trends of winter total column ozone in the northern middle latitudes

et al. 2018

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“…above Western Europe ozone has decreased twice as fast as in the zonal mean, and this for 19 y already. This is also valid for December and January (Peters and Entzian, 1999). The search for the causes of the long term geopotential change must be an object of further investigation.…”

Section: Discussionmentioning

confidence: 93%

Very low zonally asymmetric ozone values in March 1997 above the North Atlantic-European region, induced by dynamic processes

Entzian¹,

Peters²

1999

Ann. Geophys.

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Abstract. The total ozone distribution in March 1997 showed very low values in the North Atlantic-European region, even lower than in the years before. A spatial pattern correlation between the zonally asymmetric part of total ozone and that of the 300 hPa surface geopotential of the Northern Hemisphere was applied to examine the spatial structure of the low ozone values and its dynamic dependence. A trend analysis in the North Atlantic-European region was carried out to determine to what extent the low March 1997 ozone values are related to the decadal change of meteorological parameters in the lower stratosphere, observed since the 1980s, in comparison to the interannual variability. The conclusion is that the very low ozone values above the North Atlantic-European region in March 1997 were mainly induced by dynamic processes, namely their decadal change as well as their interannual variability.

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Seasonal variations in the spatial‐temporal dependence of total column ozone

Stein

2006

Environmetrics

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SUMMARYThe Total Ozone Mapping Spectrometer (TOMS) is a satellite-based instrument that measures total column ozone on a daily basis over a fairly dense spatial grid with near global coverage. Statistical models for the spatialtemporal variations in total column ozone provide insights into ozone dynamics, are valuable for obtaining inferences on long-term trends in ozone levels, and can be used to predict ozone levels at unobserved points in space-time. However, developing such a model is complicated by the seasonally varying nature of the space-time dependence and the partial confounding of spatial and temporal variation caused by the sun-synchronous orbit of the satellite. This work considers methods for describing, modeling and estimating the seasonal patterns in the dependence structure for measurements at a single latitude. Applying one of these models to the synoptic prediction of total column ozone at a latitude shows that there is at least the potential for substantially improved predictions by exploiting the high spatial density of observations TOMS provides.

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Longitude-Dependent Decadal Changes of Total Ozone in Boreal Winter Months during 1979–92

Cited by 26 publications

References 15 publications

Zonally asymmetric trends of winter total column ozone in the northern middle latitudes

Zonally asymmetric trends of winter total column ozone in the northern middle latitudes

Very low zonally asymmetric ozone values in March 1997 above the North Atlantic-European region, induced by dynamic processes

Seasonal variations in the spatial‐temporal dependence of total column ozone

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