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Normal temperatures are shown in white. Higher than normal temperatures are shown in red and lower than normal temperatures are shown in blue. Normal temperatures are calculated over the 30 year baseline period 1951-1980. The maps are averages over a running 24 month window. The final frame represents global temperature anomalies in 2023.
The blue line represents global surface temperature reconstructed over the last 2,000 years using proxy data from tree rings, corals, and ice cores. [1] The red line shows direct surface temperature measurements since 1880. [2] Global surface temperature (GST) is the average temperature of Earth's surface.
The timeline is also a year slider, allowing the user to select year for the map. If the user marks an interval of several years on the timeline, the map colors indicate how the value has changed between the first and last year in the interval. A tooltip with country data is shown when the mouse is over a country.
Data for the map and graphs is from the COVID-19 Data Repository by the Center for Systems Science and Engineering (CSSE) at Johns Hopkins University. [ note 2 ] 7-day rolling average . Map of daily new confirmed deaths per million people by country [ 14 ] [ note 2 ] [ note 3 ]
There is good agreement on the overall evolution of global temperatures and year-to-year variability. Dataset anomalies are calculated relative to a 1981 to 2010 baseline and offset by 0.69°C, which is the best estimate difference for that period from the 1850-1900 average given in the IPCC sixth assessment report."
Johns Hopkins Coronavirus Resource Center: Global aggregated data including cases, testing, contact tracing, and vaccine development [12]; World Health Organization (WHO) Coronavirus Disease Dashboard: a database of confirmed cases and deaths reported globally and broken down by region. [13]
The graph includes yearly average global temperature both for data from Met Stations and for combined Land-Ocean temperature, with 10 year moving averages overlayed. Licensing This figure was produced by Leland McInnes using gnuplot and Inkscape and is licensed under the GFDL .
Top chart: Earth's climate has cycled between ice ages and warm interglacial periods, with each cycle taking tens of thousands of years or more. Middle chart: Global average temperature was in a cooling trend for thousands of years before fossil fuel based industrialization. Since then, it has increased about a full 1°C—in a time period less ...