vpd: Vapor pressure deficit measurements (raw)
In TREXr: Tree Sap Flow Extractor
Description
Usage
Format
References
Description
Returns an example dataset of vapour pressure deficit (VPD) monitoring from
2012-2015 at 1300 m a.s.l. in the Swiss Alps (Loetschental, Switzerland; Peters et al. 2019).
Sensors were installed at the site on a central tower (~2.5 m above the ground)
within the canopy to measure air temperature and relative humidity (Onset, USA, U23-002Pro) with a 15-min resolution.
Vpd (kPa was calculated from the air temperature and relative humidity measurements according to WMO (2008).
Usage
1
Format
Provides an is.trex-compliant object with 135840 rows and 1 column.
- index
Date of the measurements in solar time (“yyyy-mm-dd”) (character)
- value
kPa values obtained from the site-specific monitoring (numeric)
References
Peters RL, Speich M, Pappas C, Kahmen A, von Arx G, Graf Pannatier E, Steppe K, Treydte K, Stritih A, Fonti P. 2018.
Contrasting stomatal sensitivity to temperature and soil drought in mature alpine conifers.
Plant, Cell & Environment 42:1674-1689 doi: 10.1111/pce.13500
WMO. 2008.Guide to meteorological instruments and methods of observation, appendix 4B, WMO-No. 8 (CIMO Guide).
Geneva, Switzerland: World Meteorological Organization.
TREXr documentation built on March 24, 2021, 5:06 p.m.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Description Usage Format References
Description
Returns an example dataset of vapour pressure deficit (VPD) monitoring from 2012-2015 at 1300 m a.s.l. in the Swiss Alps (Loetschental, Switzerland; Peters et al. 2019). Sensors were installed at the site on a central tower (~2.5 m above the ground) within the canopy to measure air temperature and relative humidity (Onset, USA, U23-002Pro) with a 15-min resolution. Vpd (kPa was calculated from the air temperature and relative humidity measurements according to WMO (2008).
Usage
1 |
Format
Provides an is.trex-compliant object with 135840 rows and 1 column.
- index
Date of the measurements in solar time (“yyyy-mm-dd”) (
character)- value
kPa values obtained from the site-specific monitoring (
numeric)
References
Peters RL, Speich M, Pappas C, Kahmen A, von Arx G, Graf Pannatier E, Steppe K, Treydte K, Stritih A, Fonti P. 2018. Contrasting stomatal sensitivity to temperature and soil drought in mature alpine conifers. Plant, Cell & Environment 42:1674-1689 doi: 10.1111/pce.13500
WMO. 2008.Guide to meteorological instruments and methods of observation, appendix 4B, WMO-No. 8 (CIMO Guide). Geneva, Switzerland: World Meteorological Organization.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
Embedding an R snippet on your website
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.