Science Score: 67.0%
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Repository
R Package to determine Thermal Vegetation Periods
Basic Info
- Host: GitHub
- Owner: rnuske
- Language: R
- Default Branch: master
- Homepage: https://rnuske.github.io/vegperiod/
- Size: 1.8 MB
Statistics
- Stars: 8
- Watchers: 3
- Forks: 3
- Open Issues: 2
- Releases: 1
Topics
Metadata Files
README.md
vegperiod: Determine Thermal Vegetation Periods
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The vegetation period, or growing season, is the period of the year when the weather conditions are sufficient for plants to grow. This package provides methods to calculate climatological or thermal growing seasons solely based on daily mean temperatures and the day of the year (DOY). Because of their simplicity, they are commonly used in plant growth models and climate change impact assessments.
The concept of a temperature driven vegetation period holds mostly for the temperate climate zone. At lower latitudes, other factors such as precipitation and evaporation can be more decisive. Some methods such as GSL of ETCCDI are employed globally (with a half year shift in the southern hemisphere). Others have a smaller area of application as they have been parameterized with local to regional observations. However, the methods Menzel and vonWilpert are used throughout Germany.
The package also includes functions for downloading open meteo data from Germany's National Meteorological Service (Deutscher Wetterdienst, DWD).
Installation
The stable version can be installed from CRAN
r
install.packages("vegperiod")
and the development version is available from Github using the package remotes
r
remotes::install_github("rnuske/vegperiod")
Usage
Vegetation periods are calculated using the function vegperiod(). One has to choose at least a start and an end method. Some methods require additional arguments, such as 'Menzel' which needs 'species'.
r
data(goe)
vegperiod(dates=goe$date, Tavg=goe$t,
start.method="Menzel", end.method="vonWilpert",
species="Picea abies (frueh)", est.prev=3)
Implemented start and end methods
Common methods for determining the onset and end of thermal vegetation periods are provided, for details see next sections and documentation. Suggestions or contributions of additional methods are always welcome. Popular choices with regard to forest trees in Germany are Menzel and vonWilpert. Climate change impact studies at NW-FVA are frequently conducted using Menzel with "Picea abies (frueh)" and NuskeAlbert for all tree species; with tree species specifics accounted for in subsequent statistical models.
Start methods
- Menzel implemented as described in Menzel (1997). Parameterized for 10 common tree species. Requires previous years chill days, which can be substituted by the average of first years.
- StdMeteo / ETCCDI a simple threshold based procedure as defined by the Expert Team on Climate Change Detection and Indices (cf. ETCCDI 2009 and Frich et al. 2002). Leading to quite early vegetation starts.
- Ribes uva-crispa using leaf out of gooseberry as indicator. Developed by Germany's National Meteorological Service (Deutscher Wetterdienst, DWD). Presented in the section forestry of DWD's 'Climate Atlas'. It is more robust against early starts than common simple meteorological procedures.
End methods
- vonWilpert based on von Wilpert (1990). Originally developed for "Picea abies" in the Black Forest but currently used for all tree species throughout Germany.
- LWF-BROOK90 a reimplementation of the LWF-BROOK90 VBA version of vonWilpert (Hammel and Kennel 2001).
- NuskeAlbert a very simple method inspired by standard climatological practices.
- StdMeteo / ETCCDI a simple threshold based procedure as defined by the Expert Team on Climate Change Detection and Indices (cf. ETCCDI 2009 and Frich et al., 2002). Leading to quite late vegetation ends.
Download climate data from DWD (German Meteorological Service)
Germany's National Meteorological Service offers open meteo data in its Climate Data Center.
The files are organized in deep folder structures and end with an arcane/legacy EOF character.
The Function read.DWDdata()deals with all of that and returns a data.frame. Beware there might be missing values and inhomogeneities.
Note: Downloading 'historical' data from DWD with read.DWDdata() requires the package 'curl'.
How to cite this package
If you use the package vegperiod for your publication, please cite it as follows:
Nuske, R. (2022): vegperiod: Determine Thermal Vegetation Periods [Software]. Zenodo. Version 0.4.0. https://doi.org/10.5281/zenodo.1466541
Contributions
Implementations of further start and end methods or download functions are more than welcome! Please suggest suitable candidates via issue or pull request.
Owner
- Name: Robert Nuske
- Login: rnuske
- Kind: user
- Company: privat hier
- Repositories: 18
- Profile: https://github.com/rnuske
Citation (CITATION.cff)
cff-version: 1.2.0
title: 'vegperiod: Determine Thermal Vegetation Periods'
message: 'To cite package "vegperiod" in publications please use:'
type: software
authors:
- family-names: Nuske
given-names: Robert
email: robert.nuske@mailbox.org
orcid: 'https://orcid.org/0000-0001-9773-2061'
identifiers:
- type: doi
value: 10.5281/zenodo.1466541
repository-code: 'https://github.com/rnuske/vegperiod'
url: 'https://rnuske.github.io/vegperiod/'
repository: 'https://cran.r-project.org/package=vegperiod'
abstract: >-
Collection of common methods to determine growing season
length in a simple manner. Start and end dates of the
vegetation periods are calculated solely based on daily
mean temperatures and the day of the year.
keywords:
- vegetation-period
- growing-season
- dwd
- r
- r-package
license: GPL-3.0-or-later
version: 0.4.0
date-released: '2022-11-01'
GitHub Events
Total
Last Year
Committers
Last synced: 6 months ago
Top Committers
| Name | Commits | |
|---|---|---|
| Robert Nuske | r****e@n****e | 106 |
| Robert Nuske | r****e | 4 |
| Robert Nuske | r****e@m****g | 3 |
| Axel | a****t@g****m | 1 |
Committer Domains (Top 20 + Academic)
Issues and Pull Requests
Last synced: 6 months ago
All Time
- Total issues: 8
- Total pull requests: 1
- Average time to close issues: 5 months
- Average time to close pull requests: 17 days
- Total issue authors: 7
- Total pull request authors: 1
- Average comments per issue: 1.5
- Average comments per pull request: 2.0
- Merged pull requests: 1
- Bot issues: 0
- Bot pull requests: 0
Past Year
- Issues: 1
- Pull requests: 0
- Average time to close issues: N/A
- Average time to close pull requests: N/A
- Issue authors: 1
- Pull request authors: 0
- Average comments per issue: 0.0
- Average comments per pull request: 0
- Merged pull requests: 0
- Bot issues: 0
- Bot pull requests: 0
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- rnuske (2)
- ckluss (1)
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- awellpott (1)
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Packages
- Total packages: 1
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Total downloads:
- cran 349 last-month
- Total docker downloads: 41,971
- Total dependent packages: 1
- Total dependent repositories: 2
- Total versions: 6
- Total maintainers: 1
cran.r-project.org: vegperiod
Determine Thermal Vegetation Periods
- Homepage: https://rnuske.github.io/vegperiod/
- Documentation: http://cran.r-project.org/web/packages/vegperiod/vegperiod.pdf
- License: GPL (≥ 3)
-
Latest release: 0.4.0
published over 3 years ago
Rankings
Maintainers (1)
Dependencies
- R >= 3.2.0 depends
- utils * imports
- curl * suggests
- tinytest * suggests
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