NDLI: The COST733 circulation type classification software: an example for surface ozone concentrations in Central Europe

Content Provider	Springer Nature Link
Author	Demuzere, Matthias Kassomes, P. Philipp, A.
Copyright Year	2010
Abstract	In the framework of the COST733 Action “Harmonisation and Applications of Weather Types Classifications for European Regions” a new circulation type classification software (hereafter, referred to as cost733class software) is developed. The cost733class software contains a variety of (European) classification methods and is flexible towards choice of domain of interest, input variables, time step, number of circulation types, sequencing and (weighted) target variables. This work introduces the capabilities of the cost733class software in which the resulting circulation types (CTs) from various circulation type classifications (CTCs) are applied on observed summer surface ozone concentrations in Central Europe. Firstly, the main characteristics of the CTCs in terms of circulation pattern frequencies are addressed using the baseline COST733 catalogue (cat 2.0), at present the latest product of the new cost733class software. In a second step, the probabilistic Brier skill score is used to quantify the explanatory power of all classifications in terms of the maximum 8 hourly mean ozone concentrations exceeding the 120-μg/m3 threshold; this was based on ozone concentrations from 130 Central European measurement stations. Averaged evaluation results over all stations indicate generally higher performance of CTCs with a higher number of types. Within the subset of methodologies with a similar number of types, the results suggest that the use of CTCs based on optimisation algorithms are performing slightly better than those which are based on other algorithms (predefined thresholds, principal component analysis and leader algorithms). The results are further elaborated by exploring additional capabilities of the cost733class software. Sensitivity experiments are performed using different domain sizes, input variables, seasonally based classifications and multiple-day sequencing. As an illustration, CTCs which are also conditioned towards temperature with various weights are derived and tested similarly. All results exploit a physical interpretation by adapting the environment-to-circulation approach, providing more detailed information on specific synoptic conditions prevailing on days with high surface ozone concentrations. This research does not intend to bring forward a favourite classification methodology or construct a statistical ozone forecasting tool but should be seen as an introduction to the possibilities of the cost733class software. It this respect, the results presented here can provide a basic user support for the cost733class software and the development of a more user- or application-specific CTC approach.
Starting Page	143
Ending Page	166
Page Count	24
File Format	PDF
ISSN	0177798X
Journal	Theoretical and Applied Climatology
Volume Number	105
Issue Number	1-2
e-ISSN	14344483
Language	English
Publisher	Springer Vienna
Publisher Date	2010-12-21
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Circulation type classifications Brier skill score COST733 cost733class software Surface ozone concentration Climate Change Meteorology/Climatology Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Connection between ozone concentration and atmosphere circulation at peak Moussala

Surface ozone concentrations in Agra: links with the prevailing meteorological parameters

Temporal variations in ozone concentrations derived from Principal Component Analysis

Ozone concentration characteristics at a high-elevation forest site

Influence of circulation types on temperature extremes in Europe

Changes in atmospheric circulation over Europe detected by objective and subjective methods

A novel scheme to derive optimized circulation pattern classifications for downscaling and forecast purposes

Interannual drought index variations in Central Europe related to the large-scale atmospheric circulation—application and evaluation of statistical downscaling approaches based on circulation type classifications

Determining the main atmospheric factor on ozone concentrations

The COST733 circulation type classification software: an example for surface ozone concentrations in Central Europe

Similar Documents

Connection between ozone concentration and atmosphere circulation at peak Moussala

Surface ozone concentrations in Agra: links with the prevailing meteorological parameters

Temporal variations in ozone concentrations derived from Principal Component Analysis

Ozone concentration characteristics at a high-elevation forest site

Influence of circulation types on temperature extremes in Europe

Changes in atmospheric circulation over Europe detected by objective and subjective methods

A novel scheme to derive optimized circulation pattern classifications for downscaling and forecast purposes

Interannual drought index variations in Central Europe related to the large-scale atmospheric circulation—application and evaluation of statistical downscaling approaches based on circulation type classifications

Determining the main atmospheric factor on ozone concentrations

The COST733 circulation type classification software: an example for surface ozone concentrations in Central Europe