A data frame containing the Goddard Institute for Space Studies (GISS) time series called LOTI (Land-Ocean Temperature Index) of surface temperature anomaly.
data(giss, package="ocedata")
This is data frame with columns named year
for decimal year (sampled
monthly and represented here at mid-month, i.e. the first sample in any given
year is at year+1/24) and index
for the temperature anomaly. The
resolution of the latter is 0.01C. The details of the original data
processing are provided in References 1 and 2, and the site of the (Land-Ocean
Temperature Index. Anyone using the present dataset is advised very strongly
to read the NASA documents on changes to the processing of the data (see
Reference 3).
The data were downloaded from Reference 1, yielding a text file that starts as in shown below. These data were then read with R code (reference 5) that skips the headers, chops out the annual means and then assigns columns to year fractions, e.g. the first two numbers in the data shown below are -29 and -20, yielding values -0.29degC and -0.20degC, and times are here represented as 1880+1/24 and 1880+3/24, i.e. 1880.042 and 1880.125.
GLOBAL Land-Ocean Temperature Index in 0.01 degrees Celsius base period: 1951-1980 sources: GHCN-v3 1880-11/2015 + SST: ERSST v4 1880-11/2015
using elimination of outliers and homogeneity adjustment
Notes: 1950 DJF = Dec 1949 - Feb 1950 ; ***** = missing
AnnMean
Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec J-D D-N DJF MAM JJA SON Year
1880 -29 -20 -18 -27 -14 -28 -22 -7 -16 -15 -18 -20 -19 *** **** -19 -19 -16 1880
1881 -9 -13 2 -2 -4 -28 -5 -2 -8 -19 -25 -14 -11 -11 -14 -1 -12 -17 1881
1882 10 9 2 -19 -17 -24 -9 4 0 -22 -20 -24 -9 -8 1 -11 -10 -14 1882
Web location of the raw LOTI data: https://data.giss.nasa.gov/gistemp/tabledata_v3/GLB.Ts+dSST.txt
GISTEMP Team, 2015: GISS Surface Temperature Analysis (GISTEMP). NASA Goddard Institute for Space Studies. https://data.giss.nasa.gov/gistemp/
J. Hansen, R. Ruedy, M. Sato and K. Lo, 2010. Global surface temperature change. Rev. Geophys., 48, RG4004. https://pubs.giss.nasa.gov/abs/ha00510u.html
Updates to analysis: https://data.giss.nasa.gov/gistemp/updates_v3/
R code to convert from NASA format to the format stored here https://github.com/dankelley/ocedata/blob/master/create_data/giss/create_giss.R