I've just downloaded data from the Epiphyt database. Why are there duplicates in this database?
Initially, the Epiphyt database records a large number of disease observations on agricultural crops. The original observation data correspond to the observation of a crop, in a given place and on a given day, for which the health status of a plant is described by looking at the presence/absence and intensity of several pathogens (fungi, insects, ...), and its phenological stage. The TEMPO portal broadcasts the observations as they appear in the original database, and since the pathogen information (presence, absence, intensity, etc.) is not redistributed, the phenological data is duplicated. The choice is thus left to process the data and eliminate duplicates.
Is it possible to tell whether the data in TEMPO refer to winter wheat (or winter barley) or spring wheat?
This information is not available in the data disseminated by the TEMPO portal, unless explicitly described by the data provider. The other possibility is to check whether the sowing date of the same series is also available in the database.
Do I have to quote the data sets available in TEMPO?
Yes, when publishing scientific articles, you must respect the licenses and cite the origin of the data used. All dataset licenses are available here and in the downloaded file.
PMP
What is the PMP format file available for download?
PMP (Phenology Modelling Platform) is a biophysical modeling software for plant phenology that allows:
- to parameterize a process-based phenological model by selecting a model in a library or constructing your own model,
- to make a simulation using a model.
See http://www.cefe.cnrs.fr/fr/recherche/ef/forecast/phenology-modelling-platform.
pheno-pmp.txt, pheno-pmp-drias.txt and pheno-pmp-safran.txt are input files for PMP.
The file pheno-pmp.txt contains all the data, while the files pheno-pmp-drias.txt and pheno-pmp-safran.txt only contain data for sites that could be associated with DRIAS or SAFRAN grids.
What do the PMP file headers correspond to, starting with the 4th column?
These are stage codes prefixed by phenological scale codes, identified as present in the TEMPO database and included in the stage.csv file.
How are PMP format files created?
As a PMP file can only contain one value per location, year and stage, when several dates are present in the selected data (and present in the common_variables.csv file), an aggregation is performed: the average for 2 dates or the median for 3 or more dates.
You can regenerate the files pheno-pmp-drias.txt and pheno-pmp-safran.txt from common_variables.csv (eg.: if you filter its data) using the Python 3 script common_variables2pmp.py given in the archive:
./common_variables2pmp.py --help\
./common_variables2pmp.py --sites sites.csv --data common_variables.csv
./common_variables2pmp.py --sites sites.csv --data common_variables.csv --drias
./common_variables2pmp.py --sites sites.csv --data common_variables.csv --no-drias