Maps & Data

a value of zero describes a surface that absorbs all solar energy it receives. Freshly fallen snow is extremely reflective; it has an albedo of 0.95 or 95%. Forests, crops, and bare ground are not ver ...

or solid form that falls to Earth's surface from clouds. It can be in the form of drizzle, snow, ice, freezing rain, or hail. Rain gauges are the most common instrument used to measure rainfall. A rai ...

extent and the trend over the full period of record. The tool can also generate bar graphs of snow cover by month for the entire Northern Hemisphere or subregions within it. The bar graphs are interac ...

Snow and Ice Cover - Map Viewer. Official Dataset Name. Snow Cover Maps. Direct Link. Snow Cover Maps. Dataset Image. How much of the Northern Hemisphere is covered with snow and ice today? How has th ...

temperatures at a station on a specific day? * How much did it rain last Wednesday? * How much snow was on the ground on a recent date? Daily weather records come from automated and human-facilitated ...

direction. Water vapor. River discharge. Water use. Groundwater Lakes . Snow cover. Land cover. Soil moisture. Temporal resolution(s). Weekly - < Monthly. Science Organiza ...

Link. Radar Data. Dataset Image. Radar technology enables weather observers to track rain and snow storms in real time. Radar is an object detection system that works by emitting radio waves and measu ...

Together, these factors control the range of temperatures and the amount of rain and/or snow each region receives through the year. These factors control climate, and in turn, climate controls ecology ...