Irradiance: Photosynthetic Photon Flux Density PPFD (PPFD) measurements...

Description Usage Format Source

Description

Data were collected during an experiment conducted on a vineyard of the INRAE/Institut Agro campus at Montpellier in 2014 (Syrah vines). The objective of the experiment was to study the influence of the micro-climate (temperature and irradiance) at the grape level on the anthocyanin contents of the berries indicated by the Ferari index. This dataset is related to irradiance measurements in the morning (sunrise to twelve am) between July 24th, 2014 at 09:00 am and August 01, 2014 at 09:00 am. These observations are made at the same time (every 12 minutes) as the temperature observations. The individuals are in columns while the observation times are in rows. The same individuals are also present in the Temperature and FerariIndex_Difference datasets.

Usage

1

Format

A data frame (of one functionnal variable) with 127 rows (observation times) and 33 columns: the 1st one is a character vector which corresponds to date-time in format "yyyy-mm-dd hh:mm:ss", the others are numeric vectors made of the observations of irradiance (PPFD) measured in 10^{-6}mol.m^{-2}.s^{-1} on each of the 32 statistical individuals Indiv1,...,Indiv32. Irradiance corresponds to the number of incident photons useful for photosynthesis, received per unit of time on a horizontal surface unit.

Source

These data were acquired during the Innovine project, funded by the Seventh Framework Programme of the European Community (FP7/2007-2013), under Grant Agreement No. FP7-311775.


SpiceFP documentation built on Sept. 15, 2021, 9:07 a.m.