File:Ngrip bolling allerod do18 1.png
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Summary[edit]
DescriptionNgrip bolling allerod do18 1.png |
English: Bölling-Alleröd Greenland ice core NGRIP temperature data.
Data for this file is from http://www.iceandclimate.nbi.ku.dk/data/NGRIP_d18O_and_dust_5cm.xls http://www.iceandclimate.nbi.ku.dk/data/ processed to csv
The data is from oxygen isotope ratio delta-O18. Source of oxygen isotope data is "North Greenland Ice Core Project Oxygen Isotope Data." IGBP PAGES/World Data Center for Paleoclimatology Data Contribution Series # 2004-059. NOAA/NGDC Paleoclimatology Program, Boulder CO, USA. The original data file has processed with R and plotted with ggplot2, with the following code: library(tidyverse)
library(readr)
# Loads the data, skipping the first 79 lines (comments)
ngrip_d18o_50yr <- read_table2("ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/ngrip/isotopes/ngrip-d18o-50yr.txt",
skip = 79)
# Filters the relevant time period, pipes into ggplot()
ngrip_d18o_50yr %>% filter(Age <= 16000 & Age >= 12000) %>%
# Creates the plot
ggplot(aes(x=Age, y=d18O)) + geom_path(color="red") + scale_x_reverse() +
labs(x="Age, ss09sea, years before 2000 AD", y="delta 18O, permille") + theme_bw()
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Date | |
Source | Own work |
Author | Merikanto, bender235 |
Licensing[edit]
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File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 18:17, 12 September 2020 | 1,275 × 944 (240 KB) | Merikanto (talk | contribs) | New data and layout | |
18:26, 30 December 2018 | 985 × 794 (11 KB) | Bender235 (talk | contribs) | created new version, using ggplot2 | ||
15:14, 30 November 2015 | 985 × 794 (65 KB) | Merikanto (talk | contribs) | User created page with UploadWizard |
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