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rd-sealevels.R
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rd-sealevels.R
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#' @importFrom tibble tibble
NULL
#' Global Average Absolute Sea Level Change, 1880–2015
#'
#' These data describe how sea level has changed over time, in both
#' relative and absolute terms. Absolute sea level change refers to
#' the height of the ocean surface regardless of whether nearby
#' land is rising or falling.
#'
#' @format A data frame with 136 observations on the following 5 variables.
#' \describe{
#' \item{\code{year}}{the year}
#' \item{\code{adjlev}}{adjusted sea level (in inches)}
#' \item{\code{lb}}{the lower bound of the estimate (in inches)}
#' \item{\code{ub}}{the upper bound of the estimate (in inches)}
#' \item{\code{adjlev_noaa}}{NOAA's adjusted sea level (in inches)}
#' }
#'
#' @source Environmental Protection Agency ("Climate Change Indicators: Sea Level")
#'
#' @references CSIRO (Commonwealth Scientific and Industrial Research Organisation).
#' 2015 update to data originally published in: Church, J.A., and N.J. White. 2011.
#' Sea-level rise from the late 19th to the early 21st century. Surv. Geophys.
#' 32:585–602.
#'
#' NOAA (National Oceanic and Atmospheric Administration). 2016.
#' Laboratory for Satellite Altimetry: Sea level rise. Accessed June 2016.
#'
#'
"sealevels"