These data contain monthly mean temperature anomalies expressed as deviations from the corresponding 1951-1980 means. They are useful for showing how we can measure climate change.

LOTI

## Format

A data frame with 1,692 observations on the following 2 variables.

date

a date, mostly to contain information for the year and month

value

the mean temperature anomaly as deviation from corresponding 1951-1980 mean

## Source

https://data.giss.nasa.gov/gistemp/

## Details

Data are updated through most recent month, at least for last time I updated it. Data represent combined land-surface air and sea-surface water temperature anomalies. Of note: the day value in the date column has no real value. It was just a way of combining data that are aggregated by year and month.