Wednesday, May 23. 2018
We are happy to announce that our reference publication is now online
Pan European Phenological database (PEP725): a single point of access for European data
Please use it for all of your work with PEP725 records!
Templ, B., Koch, E., Bolmgren, K., Ungersböck, M., Paul, A., Scheifinger, H., et al.
(2018). Pan European Phenological database (PEP725): a single point of access for
European data. Int. J. Biometeorology. doi: 10.1007/s00484-018-1512-8
Wednesday, March 1. 2017
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
Tuesday, November 29. 2016
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)!
Friday, August 12. 2016
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.
Friday, April 1. 2016
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
Friday, April 3. 2015
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/
Tuesday, March 31. 2015
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!
Friday, February 6. 2015
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
Wednesday, December 17. 2014
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!
Friday, August 29. 2014
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
Tuesday, July 15. 2014
We are very happy to announce that
Montenegro one of the smallest countries of Europe (member of EUMETNET) joined PEP725 with 5 stations and amazing 12 718 records from 1951 - 2013.
With our latest update all those records are already available on our webpage.
Wednesday, July 9. 2014
Since today we have some (indeed a lot of) statistics of our database and users online. If there is anything you additionally want to have, let us know! Currently we provide only numbers and no figures but they are planned for the future.
Tuesday, May 6. 2014
Another publication under use of some records from the PEP725 database
Variation in leaf flushing date influences autumnal senescence and next year’s flushing date in two temperate tree species
Yongshuo S. H. Fu et al. 2014
Abstract
Recent temperature increases have elicited strong phenological shifts in temperate tree species, with subsequent effects on photosynthesis. Here, we assess the impact of advanced leaf flushing in a winter warming experiment on the current year’s senescence and next year’s leaf flushing dates in two common tree species: Quercus robur L. and Fagus sylvatica L. Results suggest that earlier leaf flushing translated into earlier senescence, thereby partially offsetting the lengthening of the growing season. Moreover, saplings that were warmed in winter–spring 2009–2010 still exhibited earlier leaf flushing in 2011, even though the saplings had been exposed to similar ambient conditions for almost 1 y. Interestingly, for both species similar trends were found in mature trees using a long-term series of phenological records gathered from various locations in Europe. We hypothesize that this long-term legacy effect is related to an advancement of the endormancy phase (chilling phase) in response to the earlier autumnal senescence. Given the importance of phenology in plant and ecosystem functioning, and the prediction of more frequent extremely warm winters, our observations and postulated underlying mechanisms should be tested in other species.
The full text is available here
Friday, April 18. 2014
Another Dataset Update, now we have 9 036 848 observations available for you
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