Verify "Why do clouds form?" — satellites, climate statistics, and the WMO International Cloud Atlas in one traversal.
Observation data of temperature, precipitation, etc. For analyzing climate change and torrential rains.
When you can see clouds moving, weather and torrential-rain inquiry becomes concrete.
The UK's official weather and climate agency. Publishes historical observations, climate research, and reanalysis data. Paired with JMA (Japan), lets you read differences between North Atlantic climate and Japan's monsoon climate.
The English portal of Germany's federal meteorological service. Observations, climate data, and warnings. An official reference for continental European climate, useful for climate comparison with Japan.
Korea's official meteorological agency (English portal). Publishes observations, forecasts, and climate data. As a neighbour across the Yellow Sea and Sea of Japan, one of the easiest meteorological datasets to compare with Japan.
Input temperature and precipitation → draw a climograph or hyetograph, classify Köppen climate type, publish KML.
Climate charts and monthly temperature/precipitation data for thousands of locations worldwide.
Generate climate charts by clicking on a world map. Walter-Lieth diagram available.
High-resolution global weather and climate database.
Climate data for 100+ countries and 12,000+ locations.
NOAA's climate maps and visualization tools.
The international standard for cloud classification by WMO. Definitions and identification flowcharts.
Interactive quizzes and simulators to learn about weather, typhoons, and earthquakes in a fun way.
Nationwide current conditions, forecasts, and rain-cloud radar from the Japan Weather Association.
Visible imagery from Himawari-8/9, updated every 2.5 minutes over Japan, with 11 zoom levels.
Satellite data archive and downloads from NICT's Himawari project.
Wind and ocean current flows animated on a globe. Japanese interface available.
Multi-layer visualization: radar, satellite, wind, rain, temperature, clouds, waves, and air quality.
Wind depicted as streamlines. Models: GFS, HRRR, GEM, ICON. Ad-free.
Global daily satellite imagery, updated within 3 hours of observation.
Real-time Earth imagery from NOAA satellites.
NASA 3D visual tool to explore Earth, the solar system, and space.