NDLI: Classification of circulation types: a new flexible automated approach applicable to NCEP and GCM datasets

Content Provider	Springer Nature Link
Author	Anagstopoulou, Christina Tolika, Konstantia Maheras, Panagiotis
Copyright Year	2008
Abstract	This study is motivated by an interest in obtaining a new automated classification scheme of daily circulation types suitable for use throughout Europe. The classification scheme is performed on 500 hPa geopotential height anomalies (NCEP Reanalysis data, 2.5°×2.5°). Nine grid points represent the study area. Five anticyclonic types (Anw, Ane, A, Asw and Ase) and seven cyclonic types (C, Cnnw, Cwnw, Cwsw, Cssw, Cse, Cne) are defined. Each of the circulation types has a distinct underlying synoptic pattern that produces the expected type and direction of flow over the study area. The classification scheme is applied to three different case studies in the Mediterranean Basin: Greece, Cyprus and central Italy. The precipitation percentage of the cyclonic type and the mean seasonal correlation coefficients for all circulation types are the two criteria used to evaluate the performance of the classification scheme. The ability of the HadAM3P general circulation model to reproduce the mean pattern and frequency of circulation types at the 500 hPa level in comparison to the NCEP dataset for the period 1960–1990 is also evaluated. The percentage of rainfall that corresponds to the cyclonic circulation types is greater than 85% for the three study regions. Furthermore, the correlation coefficients for the three classifications are very encouraging, for nearly all days of the study period. Compared to observations, the GCM is able to capture the mean patterns but not able to replicate exactly the observed variability of the circulation types over the three study regions.
Starting Page	3
Ending Page	15
Page Count	13
File Format	PDF
ISSN	0177798X
Journal	Theoretical and Applied Climatology
Volume Number	96
Issue Number	1-2
e-ISSN	14344483
Language	English
Publisher	Springer Vienna
Publisher Date	2008-05-17
Publisher Place	Vienna
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution Climate Change Atmospheric Protection/Air Quality Control/Air Pollution Meteorology/Climatology
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

Fuzzy logic circulation types based on the Osuchowska-Klein classification system created for Poland

Euro-Atlantic circulation types and modes of variability in winter

Influence of circulation types on temperature extremes in Europe

Statistical downscaling of daily precipitation over Sweden using GCM output

North African climate variability. Part 2: Tropical circulation systems

Precipitation climate of Central Asia and the large-scale atmospheric circulation

Trends in middle- and upper-level tropospheric humidity from NCEP reanalysis data

Multi-scale variability patterns in NCEP/NCAR reanalysis sea-level pressure

A seasonal study of the atmospheric dynamics over the Iberian Peninsula based on circulation types

Classification of circulation types: a new flexible automated approach applicable to NCEP and GCM datasets

Similar Documents

Fuzzy logic circulation types based on the Osuchowska-Klein classification system created for Poland

Euro-Atlantic circulation types and modes of variability in winter

Influence of circulation types on temperature extremes in Europe

Statistical downscaling of daily precipitation over Sweden using GCM output

North African climate variability. Part 2: Tropical circulation systems

Precipitation climate of Central Asia and the large-scale atmospheric circulation

Trends in middle- and upper-level tropospheric humidity from NCEP reanalysis data

Multi-scale variability patterns in NCEP/NCAR reanalysis sea-level pressure

A seasonal study of the atmospheric dynamics over the Iberian Peninsula based on circulation types

Classification of circulation types: a new flexible automated approach applicable to NCEP and GCM datasets