Radar performance evaluated by range, accuracy, target detection, and availability. Maximum range depends on transmitter power and antenna size. Some radars have antennas up to 100 feet diameter
World's largest freshwater lake by surface area. Located in central North America, straddling Canada-US border. Surface area of 31,700 square miles, maximum length 350 miles. Contains 2,900 cubic miles of water, average depth 80.5 fathoms
Active continental rift zone in East Africa, developing 22-25 million years ago. African plate splitting into Somali and Nubian plates at 6-7 mm/year. System consists of Victoria, Rovuma, and Lwandle microplates. Contains numerous African Great Lakes within its valley
Solar cycle is a 11-year period of variations in sunspot numbers. Sun's magnetic field flips during each cycle, completing a 22-year Hale cycle. Cycle has been observed for centuries but not clearly identified until 1843
Ecosystems are communities of living things interacting with physical world. People depend on ecosystems for food, water, clean air, and recreation. Ecosystems can range from Yellowstone to single fallen tree
Report assesses climate change impacts globally and regionally. Summary for Policymakers approved by IPCC member governments. Technical Summary provides extended key findings summary. Report consists of 18 chapters and 7 cross-chapter papers