Mapmaster

MapMaster 3

Atlas (Beta)
MapMaster 3

Insolation

WorldPhysical Environment

Average annual levels of solar radiation reaching the Earth's surface

NOAA

A map shows areas of insolation (incoming solar radiation) across the world, categorized by watts per square meter.

The map illustrates global insolation, showing variations in incoming solar radiation from the tropics to the polar regions. In the Northern Hemisphere, high insolation (220 to 280 plus watts per square meter), highlighted as dark green to dark red spans from northwestern Mexico through southern Texas, Florida, and the Caribbean, across the Atlantic to North Africa and Southwest Asia, with peaks in the eastern Sahara and Arabian Peninsula. In the Southern Hemisphere, high insolation areas stretch from East Africa to South Africa and across the Indian Ocean to most of Australia, with other high insolation zones in the Central Pacific and south-central South America. Middle insolation values (120 to 219 watts per square meter), highlighted as light blue to green, are found between 50 degrees north and 50 degrees south latitude, excluding high insolation regions. Low insolation areas (80 to 119 watts per square meter), highlighted as blue to light blue, are located north of the 50-degree lines to the poles in North America, the North Atlantic, and Eurasia, and around the Southern Ocean in Antarctica. The lowest insolation values (less than 80 watts per square meter), highlighted as dark blue, are in the ocean east of northern Greenland.

Add Columns

Insolation

Ecological Regions: Level 2 Labels

240–259

220–239

200–219

180–199

160–179

140–159

120–139

100–119

80–99

Less than 80

ALASKA BOREAL INTERIOR

ALASKA TUNDRA

ARCTIC CORDILLERA

ATLANTIC HIGHLANDS

BOREAL CORDILLERA

BOREAL PLAIN

BROOKS RANGE TUNDRA

CENTRAL USA PLAINS

COLD DESERTS

EVERGLADES

HUDSON PLAIN

MARINE WEST COAST FOREST

MEDITERRANEAN CALIFORNIA

MISSISSIPPI ALLUVIAL AND SOUTHEAST USA COASTAL PLAINS

MIXED WOOD PLAINS

MIXED WOOD SHIELD

NORTHERN ARCTIC

OZARK/OUACHITA-APPALACHIAN FORESTS

SOFTWOOD SHIELD

SOUTH CENTRAL SEMIARID PRAIRIES

SOUTHEASTERN USA PLAINS

SOUTHERN ARCTIC

TAIGA CORDILLERA

TAIGA PLAIN

TAIGA SHIELD

TEMPERATE PRAIRIES

TEXAS-LOUISIANA COASTAL PLAIN

UPPER GILA MOUNTAINS

WARM DESERTS

WEST-CENTRAL SEMIARID PRAIRIES

WESTERN CORDILLERA

WESTERN SIERRA MADRE PIEDMONT

District of Columbia
100%
Idaho
78.1%21.9%
New Hampshire
100%
Vermont
100%
Kentucky
46.4%53.6%
Virginia
2.49%97.5%
Missouri
66.4%33.6%
Louisiana
26.8%73.2%
Hawaii
2.67%97.3%
Kansas
5.90%91.6%2.46%
South Carolina
100%
Connecticut
100%
Georgia
48.3%51.7%
Maryland
100%
Manitoba
26.0%66.7%7.35%
Oklahoma
82.2%17.8%
Tennessee
100%
Ohio
51.6%48.4%
Alaska
28.4%69.2%2.23%281516
Arizona
44.2%33.7%22.1%211
Utah
70.0%8.89%2.63%11
Yukon
100%1
Northwest Territories
2.63%82.4%14.9%3111
Florida
32.7%67.3%11
Rhode Island
100%1
Washington
1.22%98.8%12
Wyoming
12.4%87.6%11
Nunavut
1.36%33.1%65.5%8204
Montana
14.7%85.3%13
Maine
99.8%0.153%1
North Dakota
100%1
Nova Scotia
52.4%47.6%2
Delaware
100%1
Prince Edward Island
100%1
Saskatchewan
42.7%57.2%1
Mississippi
82.1%17.9%1
West Virginia
99.2%0.827%1
Nebraska
9.53%90.5%1
Texas
5.26%58.9%35.9%211
North Carolina
73.0%27.0%11
Oregon
96.3%3.75%1
New Brunswick
47.2%52.8%1
Alabama
66.2%33.8%1
New Mexico
15.5%33.9%49.1%4
Wisconsin
100%1
British Columbia
21.7%31.5%46.8%1111
Newfoundland and Labrador
29.5%69.1%1.36%1
New Jersey
51.6%48.4%1
Michigan
100%111
Alberta
29.7%53.1%17.2%11
Pennsylvania
19.4%80.6%1
Colorado
48.1%51.6%0.332%1
Nevada
1.58%63.4%31.2%3.86%1
Massachusetts
0.220%99.8%1
New York
100%21
Québec
10.4%38.5%41.0%10.1%111211
Ontario
30.4%56.0%13.7%111
California
2.69%22.7%49.4%19.9%5.25%211
Arkansas
50.1%49.9%11
South Dakota
50.1%49.9%1
Indiana
0.561%79.2%20.2%1
Minnesota
99.9%1
Iowa
77.7%22.3%1
Illinois
11.8%73.8%14.4%1
0.16.0