Vanícek, Karel; Metelka, Ladislav; Skrivánková, Pavla; Stanek, Martin (2012): Hradec Králové total ozone assimilated time series from 1961 to 2010 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.779819
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Abstract:
Homogenized data series of total ozone measurements taken by the regularly and well calibrated Dobson and Brewer spectrophotometers at Hradec Králové (Czech) and the data from the re-analyses ERA-40 and ERA-Interim were assimilated and combined to investigate differences between the particular data sets over Central Europe, the NH mid-latitudes. The Dobson-to-Brewer transfer function and the algorithm for approximation of the data from the re-analyses were developed, tested and applied for creation of instrumentally consistent and completed total ozone data series of the 50-year period 1961-2010 of observations. The assimilation has reduced the well-known seasonal differences between Dobson and Brewer data below the 1% calibration limit of the spectrophotometers. Incorporation of the ERA-40 and ERA-Interim total ozone data on days with missing measurements significantly improved completeness and reliability of the data series mainly in the first two decades of the period concerned. Consistent behaviour of the original and assimilated data sets was found in the pre-ozone-hole period (1961-1985). In the post-Pinatubo (1994-2010) era the data series show seasonal differences that can introduce uncertainty in estimation of ozone recovery mainly in the winter-spring season when the effect of the Montreal Protocol and its Amendments is expected. All the data sets confirm substantial depletion of ozone also in the summer months that gives rise to the question about its origin. The assimilated and completed data series of total ozone will be further analyzed to quantify chemical ozone losses and contribution of natural atmospheric processes to the ozone depletion over the region. This case study points out importance of selection and evaluation of the quality and consistency of the input data sets used in estimation of long-term ozone changes including recovery of the ozone layer over the selected areas.
Related to:
Vanícek, Karel; Metelka, Ladislav; Skrivánková, Pavla; Stanek, Martin (2012): Dobson, Brewer, ERA-40, and ERA-Interim original and assimilated total ozone data sets - evaluation of differences. A case study, Hradec Králové (Czech),1961-2010. Earth System Science Data, 4(1), 91-100, https://doi.org/10.5194/essd-4-91-2012
Coverage:
Latitude: 50.177200 * Longitude: 15.838600
Date/Time Start: 1961-01-01T00:00:00 * Date/Time End: 2010-12-31T00:00:00
Minimum Elevation: 285.0 m * Maximum Elevation: 285.0 m
Event(s):
Comment:
Project: Long-term Changes of the Ozone Layer Over the Territory of the Czech Republic. The Czech Grant Agency, Project No. P209/10/0058, 2010-2012. Global Atmosphere Watch Programme (GAW), http://www.wmo.int/pages/prog/arep/gaw/gaw_home_en.html
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | DATE/TIME | Date/Time | Geocode | |||
2 | Ozone total | O3 tot | DU | Vanícek, Karel | Dobson Ozone Spectrophotometer, D074 | Dobson spectrophotometer in situ (XD), daily averages. |
3 | Ozone total | O3 tot | DU | Vanícek, Karel | Brewer Ozone Spectrophotometer, B098 | Brewer spectrophotometer in situ (XB), daily averages. |
4 | Ozone total | O3 tot | DU | Vanícek, Karel | see comment | Dobson combined with Brewer spectrophotometers in situ (XDB), daily averages. |
5 | Ozone total | O3 tot | DU | Vanícek, Karel | see comment | Dobson XD transferred to Brewer XB, calibration scale (XDTRANS), daily averages. |
6 | Ozone total | O3 tot | DU | Vanícek, Karel | see comment | XDTRANS assimilated with XB. XB preferred on days with both XDTRANS and XB observations (XASIM), daily averages. |
7 | Ozone total | O3 tot | DU | Vanícek, Karel | see comment | Interpolated on days with missing in situ observations from ERA-40 (XERA40), daily averages. |
8 | Ozone total | O3 tot | DU | Vanícek, Karel | see comment | Interpolated on days with missing in situ observations from ERA-Interim (XERAIN), daily averages. |
9 | Ozone total | O3 tot | DU | Vanícek, Karel | see comment | XASIM completed by XERA40 or XERAIN on days with missing in situ observations (XALL), daily averages. |
10 | Validation flag/comment | Flag comm | Vanícek, Karel | Abbreviations of the data sources of the daily values of total ozone included in the XALL data series |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
101200 data points
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