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Phenology Weekly
Living Almanac: Phenology Weekly - a US based phenology newspaper! You can access it on paper.li or linked within PEP725Living Almanac: Phenology Weekly
Remark: We think it's worth reading but PEP725 does not have any influence to the content of this newspaper!
Wednesday, March 1. 2017
Management Meeting & Symposium
please save the date:
8th PEP725 Management Meeting (members only)
Date: 25 April 2017, 10.00 – 13.00
Venue:
Zentralanstalt für Meteorologie und Geodynamik (ZAMG)
Hohe Warte 38, 1190 Wien, Seminarraum
Symposium:
New Developments in Phenology
Date: 25 April 2017, 14.00 – 18.00
Venue:
Zentralanstalt für Meteorologie und Geodynamik (ZAMG)
Hohe Warte 38, 1190 Vienna, Austria, Seminarraum
8th PEP725 Management Meeting (members only)
Date: 25 April 2017, 10.00 – 13.00
Venue:
Zentralanstalt für Meteorologie und Geodynamik (ZAMG)
Hohe Warte 38, 1190 Wien, Seminarraum
Symposium:
New Developments in Phenology
Date: 25 April 2017, 14.00 – 18.00
Venue:
Zentralanstalt für Meteorologie und Geodynamik (ZAMG)
Hohe Warte 38, 1190 Vienna, Austria, Seminarraum
Tuesday, November 29. 2016
New records from Spain online
With the latest update we can provide about 400 new observations (covering the period 2014 -2016) for Spain. Thank you for the ongoing support to the Agencia Estatal de Meteorología (AEMET)!
Wednesday, August 31. 2016
First information about ICB2017
The next Intl Congress of Biometeorology(ICB2017) is planned for September 3-7, 2017.
Preliminary Information about ICB2017 can be found at
www.dur.ac.uk/icb.2017
Preliminary Information about ICB2017 can be found at
www.dur.ac.uk/icb.2017
Friday, August 12. 2016
Dataset update
We have been quiet but not idle for a longer time. After a lot of troubles in spring with our server infrastructure due to a hacking attack, we were very busy to get the system running again. Today I only like to announce that we uploaded records from many partners from the 2015 season.
A Thank You for the ongoing support to:
MeteoSwiss, German Weatherservice DWD, Czech Hydrometeorological Service CHMI, Federal Hydrometeorological Institute Bosnia and Herzegovina METEOBIH, The Natural Resources Institute Finland (Luke) and to the Austrian Weatherservice ZAMG.
All together about 110 000 new phenological observations are now available for your research.
A Thank You for the ongoing support to:
MeteoSwiss, German Weatherservice DWD, Czech Hydrometeorological Service CHMI, Federal Hydrometeorological Institute Bosnia and Herzegovina METEOBIH, The Natural Resources Institute Finland (Luke) and to the Austrian Weatherservice ZAMG.
All together about 110 000 new phenological observations are now available for your research.
Thursday, July 7. 2016
EMS Tromp Award goes to Barbara Templ
The EMS Tromp award has recently been established and is given for the second time this year. The EMS Tromp Award 2016 winner is Barbara Templ from Eötvös Lorànd University, Hungary, nominated with the paper: Flowering phenological changes in relation to climate change in Hungary, B. Szabó, E. Vincze, B. Czúcz, 2016, published in the International Journal of Biometeorology, DOI 10.1007/s00484-015-1128-1.The prize will be presented during the 16th EMS Annual Meeting and 11th ECAC on 13 September 2016 in Trieste, Italy
Friday, April 1. 2016
End of Year report 2015
Annual report of the activities performed in the frame of the PEP725 Optional Programme in 2015.
The main objectives - update of the database, maintenance of the webpage and support to members were achieved. The new feature “real time monitoring of phenological events in the D-A-CH region” was implemented on www.pep725.eu. The number of users and downloads increased again considerably. PEP725 was presented at international and national conferences, PEP725 data was used in papers published in as prominent journals as Nature, PNAS, Global Change Biology as well as in PH thesis. The annual meeting of the members and partners of PEP725 was held during the Phenology2015 conference in October in Kusadasi.
download the full report
The main objectives - update of the database, maintenance of the webpage and support to members were achieved. The new feature “real time monitoring of phenological events in the D-A-CH region” was implemented on www.pep725.eu. The number of users and downloads increased again considerably. PEP725 was presented at international and national conferences, PEP725 data was used in papers published in as prominent journals as Nature, PNAS, Global Change Biology as well as in PH thesis. The annual meeting of the members and partners of PEP725 was held during the Phenology2015 conference in October in Kusadasi.
download the full report
Wednesday, March 9. 2016
Call for Papers
The Austrian Journal of Statistics (published by the Austrian
Statistical Society) calls for papers for a special issue on
Statistical Applications and Methods in Phenological Research
details can be found here and on the homepage of the AJS
Statistical Society) calls for papers for a special issue on
Statistical Applications and Methods in Phenological Research
details can be found here and on the homepage of the AJS
Friday, April 3. 2015
Intercomparison of satellite sensor land surface phenology and ground phenology in Europe
Another publication under use of some records from the PEP725 database:
Intercomparison of satellite sensor land surface
phenology and ground phenology in Europe
V. F. Rodriguez-Galiano, J. Dash, and P. M. Atkinson
Geography and Environment, University of Southampton, Southampton, UK
Abstract:
Land surface phenology (LSP) and ground phenology (GP) are both important sources of information for monitoring terrestrial ecosystem responses to climate changes. Each measures different vegetation phenological stages and has different sources of uncertainties, which make comparison in absolute terms challenging, and therefore, there has been limited attempts to evaluate the complementary nature of both measures. However, both LSP and GP are climate driven and therefore should exhibit similar interannual variation. LSP obtained from the whole time series of Medium-Resolution Imaging Spectrometer data was compared to thousands of deciduous tree ground phenology records of the Pan European Phenology network (PEP725). Correlations observed between the interannual time series of the satellite sensor estimates of phenology and PEP725 records revealed a close agreement (especially for Betula Pendula and Fagus Sylvatica species). In particular, 90% of the statistically significant correlations between LSP and GP were positive (mean R2 = 0.77). A large spatiotemporal correlation was observed between the dates of the start of season (end of season) from space and leaf unfolding (autumn coloring) at the ground (pseudo R2 of 0.70 (0.71)) through the application of nonlinear multivariate models, providing, for the first time, the ability to predict accurately the date of leaf unfolding (autumn coloring) across Europe (root-mean-square error of 5.97 days (6.75 days) over 365 days).
The article has just been published online:
http://onlinelibrary.wiley.com/enhanced/doi/10.1002/2015GL063586/
Intercomparison of satellite sensor land surface
phenology and ground phenology in Europe
V. F. Rodriguez-Galiano, J. Dash, and P. M. Atkinson
Geography and Environment, University of Southampton, Southampton, UK
Abstract:
Land surface phenology (LSP) and ground phenology (GP) are both important sources of information for monitoring terrestrial ecosystem responses to climate changes. Each measures different vegetation phenological stages and has different sources of uncertainties, which make comparison in absolute terms challenging, and therefore, there has been limited attempts to evaluate the complementary nature of both measures. However, both LSP and GP are climate driven and therefore should exhibit similar interannual variation. LSP obtained from the whole time series of Medium-Resolution Imaging Spectrometer data was compared to thousands of deciduous tree ground phenology records of the Pan European Phenology network (PEP725). Correlations observed between the interannual time series of the satellite sensor estimates of phenology and PEP725 records revealed a close agreement (especially for Betula Pendula and Fagus Sylvatica species). In particular, 90% of the statistically significant correlations between LSP and GP were positive (mean R2 = 0.77). A large spatiotemporal correlation was observed between the dates of the start of season (end of season) from space and leaf unfolding (autumn coloring) at the ground (pseudo R2 of 0.70 (0.71)) through the application of nonlinear multivariate models, providing, for the first time, the ability to predict accurately the date of leaf unfolding (autumn coloring) across Europe (root-mean-square error of 5.97 days (6.75 days) over 365 days).
The article has just been published online:
http://onlinelibrary.wiley.com/enhanced/doi/10.1002/2015GL063586/
Tuesday, March 31. 2015
Finland 2014 records now online
Just a few days ago we've got the 2014 update from Finland.
A big Thank you to Eero Kubin, all observers and the team of metla.fi for their support!
A big Thank you to Eero Kubin, all observers and the team of metla.fi for their support!
Friday, February 6. 2015
End of Year Report 2014
Our report for 2014
Summary:
Annual report of the activities performed in the frame of the Climate Program/operational services in 2014. The main objectives - update of the database, maintenance of the webpage and support to members were achieved. The number of users and downloads increased considerably, besides the annual upload Montenegro submitted data for the first time and historical data from DWD were implemented. PEP725 was presented at international and national conferences. At the symposium “New developments in phenology” prominent phenology scientists as Annette Menzel, Elizabeth Wolkovich and Stephen Thackeray presented their new research.
Download the full report
Summary:
Annual report of the activities performed in the frame of the Climate Program/operational services in 2014. The main objectives - update of the database, maintenance of the webpage and support to members were achieved. The number of users and downloads increased considerably, besides the annual upload Montenegro submitted data for the first time and historical data from DWD were implemented. PEP725 was presented at international and national conferences. At the symposium “New developments in phenology” prominent phenology scientists as Annette Menzel, Elizabeth Wolkovich and Stephen Thackeray presented their new research.
Download the full report
World Multidisciplinary Earth Sciences Symposium
May I inform you about:
The World Multidisciplinary Earth Sciences Symposium– MESS 2015 will be held in in Prague (Czech Republic) during 7-11 September 2015.
and invite you and your colleagues and friends to the sessions:
Agrometeorology, Forest meteorology and Phenology (AS.2)
Human Biometeorology, Urban Climate and Tourism (AS.3)
The World Multidisciplinary Earth Sciences Symposium– MESS 2015 will be held in in Prague (Czech Republic) during 7-11 September 2015.
and invite you and your colleagues and friends to the sessions:
Agrometeorology, Forest meteorology and Phenology (AS.2)
Human Biometeorology, Urban Climate and Tourism (AS.3)
Friday, January 16. 2015
Update Phenology Conference 2015
May I forward the following announcement:
The third phenology interdisciplinary international conference, Phenology 2015 - Challenges in Phenology, is being held October 5-8, 2015 at Kusadasi/Turkey. It is a German/Turkish initiative of the Humboldt-University of Berlin (President: Prof. Jan-Hendrik Olbertz) and Adnan Menderes University Aydin (President: Prof. Dr. Cavit Bircan) and will be hosted by the Faculty of Agriculture in Aydin (Dean: Prof. Dr. Ibrahim Gencsoylu).
Abstract submission is now open (January 15 - February 28) and I encourage you all to submit an abstract and plan on attending. Conference information can be found at http://ap1-006b.agrar.hu-berlin.de/upload/
The third phenology interdisciplinary international conference, Phenology 2015 - Challenges in Phenology, is being held October 5-8, 2015 at Kusadasi/Turkey. It is a German/Turkish initiative of the Humboldt-University of Berlin (President: Prof. Jan-Hendrik Olbertz) and Adnan Menderes University Aydin (President: Prof. Dr. Cavit Bircan) and will be hosted by the Faculty of Agriculture in Aydin (Dean: Prof. Dr. Ibrahim Gencsoylu).
Abstract submission is now open (January 15 - February 28) and I encourage you all to submit an abstract and plan on attending. Conference information can be found at http://ap1-006b.agrar.hu-berlin.de/upload/
Wednesday, December 17. 2014
Dataset update
Usually we do not announce database updates, but yesterday we've got the first records of Catalonia online. As additional data provider for Spain (together with the national wide operating AEMet) meteo.cat showed an impressive start. With almost 1000 records for the years 2013/2014 this initiative had an impressive start! Thank you very much for your contribution to PEP725!
Wednesday, September 24. 2014
Communication of Climate Change Impacts via Phenology
Our contribution to the 20th International Congress of Biometeorology, Cleveland, USA.This poster will be presented on Monday 29. Sept. in Poster Session 1 (2:30PM-4PM)
DON'T MISS IT!
Download the poster as pdf file
Friday, August 29. 2014
Process-based models not always better than empirical models for simulating budburst of Norway spruce and birch in Europe
Another publication under use of some records from the PEP725 database
Olsson, C. and Jönsson, A. M. (2014), Process-based models not always better than empirical models for simulating budburst of Norway spruce and birch in Europe. Global Change Biology. doi: 10.1111/gcb.12593
Abstract
Budburst models have mainly been developed to capture the processes of individual trees, and vary in their complexity and plant physiological realism. We evaluated how well eleven models capture the variation in budburst of birch and Norway spruce in Germany, Austria, the United Kingdom and Finland. The comparison was based on the models performance in relation to their underlying physiological assumptions with four different calibration schemes. The models were not able to accurately simulate the timing of budburst. In general the models overestimated the temperature effect, thereby the timing of budburst was simulated too early in the United Kingdom and too late in Finland. Among the better performing models were three models based on the growing degree day concept, with or without day length or chilling, and an empirical model based on spring temperatures. These models were also the models least influenced by the calibration data. For birch the best calibration scheme was based on multiple sites in either Germany or Europe, and for Norway spruce the best scheme included multiple sites in Germany or cold years of all sites. Most model and calibration combinations indicated greater bias with higher spring temperatures, mostly simulating earlier than observed budburst.
The publication is available at
http://onlinelibrary.wiley.com/doi/10.1111/gcb.12593/abstract
Olsson, C. and Jönsson, A. M. (2014), Process-based models not always better than empirical models for simulating budburst of Norway spruce and birch in Europe. Global Change Biology. doi: 10.1111/gcb.12593
Abstract
Budburst models have mainly been developed to capture the processes of individual trees, and vary in their complexity and plant physiological realism. We evaluated how well eleven models capture the variation in budburst of birch and Norway spruce in Germany, Austria, the United Kingdom and Finland. The comparison was based on the models performance in relation to their underlying physiological assumptions with four different calibration schemes. The models were not able to accurately simulate the timing of budburst. In general the models overestimated the temperature effect, thereby the timing of budburst was simulated too early in the United Kingdom and too late in Finland. Among the better performing models were three models based on the growing degree day concept, with or without day length or chilling, and an empirical model based on spring temperatures. These models were also the models least influenced by the calibration data. For birch the best calibration scheme was based on multiple sites in either Germany or Europe, and for Norway spruce the best scheme included multiple sites in Germany or cold years of all sites. Most model and calibration combinations indicated greater bias with higher spring temperatures, mostly simulating earlier than observed budburst.
The publication is available at
http://onlinelibrary.wiley.com/doi/10.1111/gcb.12593/abstract
