Harry Stevens | Observable

Harry Stevens

News and graphics at @ClimateLab, a project of @PostGraphics.

http://harryjstevens.com/

Public notebooks

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Sep 4

How has mosquito season changed in your town?

Aug 22

Map: Change in length of mosquito season

Aug 22

Map: Temperature change in summer and winter, 1944-2023

Aug 8• 1

Demonstration funding for clean energy technologies in the bipartisan infrastructure…

Jul 18• 1

Where geologic conditions are favorable for enhanced geothermal

Jul 18• 1

Average forecast error for daily high temperature, 1972-2023

Jul 2

Map of temperature forecast accuracy

Jul 2• 4

Temperature forecast accuracy in U.S. cities

Jul 2

Rounded Polyline

Aug 17• 1

Bayes’ Theorem

Jun 19• 1

Daily heat index in select global cities in 2024

Jun 7• 1

Six cities’ dangerous heat days since 1979

Jun 7

Map of dangerous heat days in 2024

Jun 7• 1

Electricity demand vs. temperature in New York and Phoenix

May 22• 1

Heat wave stress on the electrical grid by mid-century

May 22• 3

Horizontal label dodging

May 16• 1

Animation of Bishop the right whale’s northward migration

May 11• 4

North Atlantic right whale population, 1990-2022

May 11

NatureScore of the top 500 U.S. cities

Apr 10• 9

NatureScore in U.S. Census tracts, socioeconomic analysis

Apr 10• 1

Peak cherry blossom bloom and D.C. temperature, 1921-2024

Mar 22

Daily temperature anomalies in D.C., 2024

Mar 22

Trend in spring leaf appearance in select cities

Mar 13• 5

Map: Trend in spring leaf appearance, 1981-2023

Mar 13• 10

Leaf appearance and temperature, 1900-2023

Mar 13• 1

Map: Winter temperature trend since 1980

Mar 1

Wartplot: Winter temperature trend in U.S. cities

Mar 1• 1

Winter temperature trend in select U.S. cities

Mar 1

Distance to the border of protected areas

Feb 14• 7 1

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