temp | R Documentation |
Temperature data during the Cenozoic. Modified from the InfTemp
data
set in RPANDA, originally inferred
from delta O18 measurements. Inverted so lower times represent time since
first measurement, to be in line with the past-to-present convention of most
time-dependent functions in paleobuddy.
data(temp)
A data frame with 17632 rows and 2 variables:
A numeric vector representing time since the beginning of the
data frame age, approximately 67 million years ago, in million years. We
set this from past to present as opposed to present to past since
birth-death functions in paleobuddy
consider time going in the
former direction. Hence t = 0
represents the time point at
67.5173mya, while t = 67.5173
represents the present.
A numeric vector representing temperature in degrees
celsius corresponding to time t
. Note there might be more than one
temperature for each time t
given the resolution of the data set.
https://github.com/hmorlon/PANDA
Morlon H. et al (2016) RPANDA: an R package for macroevolutionary analyses on phylogenetic trees. Methods in Ecology and Evolution 7: 589-597.
Epstein, S. et al (1953) Revised carbonate-water isotopic temperature scale Geol. Soc. Am. Bull. 64: 1315-1326.
Zachos, J.C. et al (2008) An early Cenozoic perspective on greenhouse warming and carbon-cycle dynamics Nature 451: 279-283.
Condamine, F.L. et al (2013) Macroevolutionary perspectives to environmental change Eco Lett. 16: 72-85.
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