Using Hockeystick

hockeystick includes functions to download and visualized climate data. Data is optionally cached.

Retrieve NOAA/ESRL Mauna Loa CO₂ Observatory concentration data and plot:

library(hockeystick)
ml_co2 <- get_carbon()
plot_carbon(ml_co2)

Retrieve GCP global CO₂ emissions and plot:

emissions <- get_emissions()
plot_emissions(emissions)

plot_emissions_with_land(emissions)

Retrieve 2081-2100 temperature projections and map:

proj <- get_cmip6()
plot_cmip6(proj)

Retrieve 2081-2100 precipation anomaly and map:

anom <- get_cmip6_anom(var = 'prec')
plot_cmip6_anom(anom)

Visualize cumulative emissions by country:

emissions_map()

Retrieve NASA/GISS global surface temperature anomaly data and plot:

anomaly <- get_temp()
plot_temp(anomaly)

Plot relationship between temperature anomaly and carbon:

plot_carbontemp()

Visualize warming using Ed Hawkins styled “warming stripes”:

warming_stripes()

warming_stripes(stripe_only = TRUE, col_strip = viridisLite::viridis(11))

Retrieve tide gauge and satellite sea level data and plot:

gmsl <- get_sealevel()
plot_sealevel(gmsl)

Retrieve July annual Arctic Sea Ice Index and plot:

seaice <- get_seaice()
plot_seaice(seaice)

get_seaice() arguments can be modified to download Antarctic sea ice, and allow any month.

You can also visualize sea ice by month and year:

arcticice <- get_icecurves()
plot_icecurves(arcticice)

Retrieve NOAA HURDAT2 hurricane data and plot:

hurricanes <- get_hurricanes()
plot_hurricanes(hurricanes)

plot_hurricane_nrg(hurricanes)

Retrieve GWIS wildfire data and plot:

usfires <- get_fires_area(place='USA', year = 2026)
plot_fires_area(usfires)

plot_fires_area(usfires, style = 'weekly')

Retrieve NOAA/ESRL CH₄ Globally averaged mean data and plot:

ch4 <- get_methane()
plot_methane(ch4)

Retrieve Vostok paleo ice core data and plot:

vostok <- get_paleo()
plot_paleo(vostok)

Managing the cache

By default, no climate data is cached, and all data is downloaded every time any of the get_ functions is called. To cache data for future use, use the write_cache = TRUE option, available in all of the get_ functions. To download and cache all data use hockeystick_update_all(). To view the files, date, and size of cached data use hockeystick_cache_details(). To re-download data from the source use the use_cache = FALSE argument in any of the get_ functions, for example: get_carbon(use_cache = FALSE, write_cache = TRUE). To delete all cached data use hockeystick_cache_delete_all().

Users may also cache data by default by adding options(hs_write_cache = TRUE)to their script or .Rprofile file.

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