Untersuchungen über den Zufluß stratosphärischer Luft in die untere Troposphäre mit Hilfe von durch kosmische Strahlung erzeugten Radionukliden und Fallout

Reiter, R.; Sladkovic, R.; Pötzl, K.; Carnuth, W.; Kanter, H. J.

doi:10.1007/bf02248010

Cited by 39 publications

(25 citation statements)

References 41 publications

(38 reference statements)

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“…The 7 Be series at the Zugspitze is the longest and goes back to 1970 (e.g., Pötzl and Carnuth, 1966;Reiter et al, 1971;Scheel and Kanter, 2002;Zanis et al, 2003a;Tositti et al, 2004). Ozone has been measured since 1978 (e.g., Reiter et al, 1987;Scheel et al, 1997;Oltmans et al, 2006).…”

Section: Zugspitze Seriesmentioning

confidence: 99%

“…Chem. Phys., 10, 2010 www.atmos-chem-phys.net/10/499/2010/ T. Trickl et al: Forecasted deep Carnuth, 1966;Reiter et al, 1971). A threshold for the integrated specific activity of 7 Be of 8 mBq m −3 for unambiguous intrusions was recommended by Sladkovic and Munzert (1990), while Eisele et al (1999) state that 5 mBq m −3 is already strongly indicative of a deep intrusion event.…”

Section: Introductionmentioning

confidence: 99%

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Forecasted deep stratospheric intrusions over Central Europe: case studies and climatologies

et al. 2010

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Abstract. Based on daily predictions of stratospheric air intrusions, obtained from trajectory calculations by ETH Zürich with wind fields from ECMWF forecasts, a high number of measurements with the ozone lidar at IMK-IFU (Garmisch-Partenkirchen, Germany) were carried out in 2001. The lidar measurements show a large variety of rather different cases reflecting the full complexity of intrusion episodes that is not visible in classical case studies. In part, tropopause folds could be fully captured. The frequency of intrusion cases forecasted and verified by vertical sounding or in the in-situ data recorded at the nearby Zugspitze summit (2962 m a.s.l.) exceed that in previous work by more than a factor of two. Three cases mapped with the lidar were selected to validate the results for the corresponding time periods extracted from a one-year run with the new hemispheric version of the chemistry-transport model EURAD. Due to the high spatial resolution chosen for these simulations the agreement with the lidar measurements is satisfactory. The Zugspitze ozone data from 1978 to 2004 were recently filtered by applying different criteria for stratospheric air, based on the 7 Be and humidity measurements. Here, by using the daily model forecasts during the time period 2001-2005, we examine three criteria and determine how well they represent the stratospheric air intrusions reaching the mountain site. Seasonal cycles for the period 2001-2005 were derived forCorrespondence to: T. Trickl (thomas.trickl@kit.edu) the forecasts as well as the intrusion frequency per month for the forecasted intrusions and each of the criteria, distinguishing eight different characteristic transport pathways. In most cases a winter maximum and a summer minimum was obtained, but in the case of cyclonic arrival of intrusions starting over Greenland a late-spring maximum is seen. Two of the filtering criteria examined, based on combining a relativehumidity (RH) threshold of 60% with either a 7 Be threshold of 5.5 mBq m −3 or the requirement for RH≤30% within ±6 h, rather reliably predict periods of deep intrusions reaching the Zugspitze station. An "or" combination of both these criteria yields slightly more cases and covers 77.9% of the intrusions identified. The lack of observations in the complementary 22.1% are mostly explained by overpasses. In this way the long-term trend of stratospheric ozone observed at this site as well as the corresponding ozone budget may be derived on the basis of measurements only. This effort will be the subject of a subsequent publication.

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Section: Zugspitze Seriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Forecasted deep stratospheric intrusions over Central Europe: case studies and climatologies

et al. 2010

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“…There have been more extensive measurements of 3 2 P activities in surface air relative to rainwater, and it has been used as a tracer of atmospheric circulation, usually in conjunction with 7 Be and sometimes with 3 3 P (Rama and Honda, 1961;Aegerter et al, 1966;Luyanas et al, 1970;Bhandari et al, 1970;Reiter et al, 1971;Reiter et al, 1975;Sanak et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

“…The strong dependence of 7 Be concentrations in surface air on latitude and season is now well established. It has been attributed to latitudinal and seasonal variations in the exchange between the troposphere and the stratosphere (Parker, 1962;Schumann and Stroeppler, 1963;Peirson, 1963;Rangarajan and Gopalakrishnan, 1970;Reiter et al, 1971;Viezee and Singh, 1980;Dutkiewicz and Husain, 1985;Dibb, 1989). Maximum 7 Be concentrations in surface air and maximum deposition rates have been reported at mid-latitude (40-50 ° N) in late spring/summer (Parker, 1962;Schumann and Stroeppler, 1963;Viezee and Singh, 1980;Dibb 1989); at low latitudes (20-30 ° N) in spring (Rangarajan and Gopalakrishnan, 1970;Viezee and Singh, 1980); and at polar latitudes during austral summer (Feely et al, 1977;Maenhaut et al, 1979;Sanak et al, 1985).…”

Section: Introductionmentioning

confidence: 99%

Cosmogenic P-32 and P-33 in the atmosphere and aligotrophic ocean and applications to the study of phosphorus cycling

Waser¹

1992

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“…Blank filters were included for background corrections. The extraction procedures for Sr-90 were first developed by Reiter et al (1977).…”

Section: Strontium-90 Analysis the Filters Analyzed Formentioning

confidence: 99%

Investigation into possible causes of elevated ozone concentrations in Miami, Florida

Aspy¹

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Untersuchungen über den Zufluß stratosphärischer Luft in die untere Troposphäre mit Hilfe von durch kosmische Strahlung erzeugten Radionukliden und Fallout

Cited by 39 publications

References 41 publications

Forecasted deep stratospheric intrusions over Central Europe: case studies and climatologies

Forecasted deep stratospheric intrusions over Central Europe: case studies and climatologies

Cosmogenic P-32 and P-33 in the atmosphere and aligotrophic ocean and applications to the study of phosphorus cycling

Investigation into possible causes of elevated ozone concentrations in Miami, Florida

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