12th Seminar for Homogenization and Quality Control in Climatological Databases and 7th Interpolation Conference followed by the Danube-Adapt Project meeting

Background

The Seminars for Homogenization and Quality Control in Climatological Databases have been held since 1996 in Budapest at the Hungarian Meteorological Service. Since 2014, the Interpolation Conferences have been organized jointly with the Seminars, addressing both theoretical and practical aspects. This integration reflects the strong link between these topics, as homogenization and quality control procedures rely on spatial statistics and interpolation techniques for spatial data comparison. The series of Homogenization Seminars and Interpolation Conferences has been hosted by the Hungarian Meteorological Service. Most of the conference proceedings have been published on the WMO/WCP/WCDMP website.

Topics

High-quality homogeneous data series and spatial interpolation are indispensable for climatological and meteorological analyses. The primary goal of this meeting is to foster discussion on methodological and theoretical aspects.

The main topics of homogenization and quality control include the following:

• Homogenization of climate time-series from sub-daily to monthly scale
• Spatial comparison of series, inhomogeneity detection, correction of series
• Methods for homogenization and quality control of daily data series, examination of parallel measurements
• Relation of monthly and daily homogenization, mathematical formulation of homogenization for climate data series in general
• Theoretical evaluation and benchmark for methods, validation statistics
• Applications of different homogenization and quality control methods, experiences with different meteorological variables
• Climate monitoring products

The main topics of spatial interpolation include the following:

• Temporal scales: from synoptic situations to climatological mean values
• Interpolation formulas and loss functions depending on the spatial probability distribution of climate variables
• Estimation and modelling of statistical parameters (e.g.: spatial trend, covariance or variogram) for interpolation formulas
• using spatiotemporal sample and auxiliary model variables (topography)
• Use of auxiliary co-variables, background information (e.g.: dynamical model results, satellite, radar data) for spatial interpolation (data assimilation, reanalysis)
• Applications of different interpolation methods for the meteorological and climatological fields
• Gridded databases, with a special focus on the homogenized, harmonized, and gridded observational database produced within the Danube-Adapt project
• Gridded climate monitoring products, digital climate atlases, climate normals

The meeting will be organized as a hybrid meeting

Registration and sending abstract

Pre-registration and abstract submission deadline is 1st of March 2026. (opens early 2026)
Persons intending to participate on the meeting are required to pre-register by filling this form in order to register and for sending abstract. (opens early 2026)
Authors will be notified about the acceptance of their submission and about the preliminary program in mid-March 2026.

Registration fee (initial estimate)

The registration fee (including coffee breaks, a modest lunch and social events) on-site is 160 EUR. The registration fee for online participation is 40 EUR.

Scientific Organizing Committee

Barbara Chimani (GeoSphere)
Peer Hechler (WMO)
Beatrix Izsák (HungaroMet)
Monika Lakatos (HungaroMet)
Tamás Szentimrey (Varimax Ltd)
Ole Einar Tveito (MetNo) 

Local Organizing Committee

Zita Bihari (HungaroMet)
Kinga Bokros (HungaroMet)
Beatrix Izsák (HungaroMet)
Monika Lakatos (HungaroMet)
Annamari Marton (HungaroMet)
Csilla Simon (HungaroMet)
Olivér Szentes (HungaroMet) 

The proceedings of previous conferences, published on the WMO/WCP/WCDMP website, are available here:

1. https://library.wmo.int/records/item/49281-proceedings-of-the-first-seminar-for-homogenization-of-surface-climatological-data?offset=19
2. ...
3. https://library.wmo.int/records/item/49272-proceedings-of-the-third-seminar-for-homogenization-and-quality-control-in-climatological-databases?offset=11
4. https://library.wmo.int/records/item/43890-fourth-seminar-for-homogenization-and-quality-control-in-climatological-databases?offset=5
5. https://library.wmo.int/records/item/52559-proceedings-of-the-fifth-seminar-for-homogenization-and-quality-control-in-climatological-databases?offset=3
6. https://library.wmo.int/records/item/48629-proceedings-of-the-sixth-seminar-for-homogenization-and-quality-control-in-climatological-databases?offset=7
7. https://library.wmo.int/records/item/50511-seventh-seminar-for-homogenization-and-quality-control-in-climatological-databases-jointly-organized-with-the-meeting-of-cost-es0601-home-action-mc-meeting?offset=1
8. https://library.wmo.int/records/item/54705-eighth-seminar-for-homogenization-and-quality-control-in-climatological-databases-and-third-conference-on-spatial-interpolation-techniques-in-climatology-and-meteorology?offset=6
9. https://library.wmo.int/records/item/56338-ninth-seminar-for-homogenization-and-quality-control-in-climatological-databases-and-fourth-conference-on-spatial-interpolation-techniques-in-climatology-and-meteorology?offset=2
10. https://library.wmo.int/viewer/57355?medianame=WCDMP_No._86_Proceedings_2020_en_#page=1&viewer=picture&o=bookmarks&n=0&q=
11. https://library.wmo.int/records/item/68452-eleventh-seminar-for-homogenization-and-quality-control-in-climatological-databases-and-sixth-interpolation-conference-jointly-organized-with-fourteenth-eumetnet-data-management-workshop?offset=4

Organizers and supporters