Alaska

District of Columbia

Florida

New Hampshire

Rhode Island

Vermont

Washington

Maine

Kentucky

Nova Scotia

Virginia

Delaware

Prince Edward Island

Mississippi

West Virginia

Texas

Louisiana

Hawaii

North Carolina

Alabama

British Columbia

New Jersey

Connecticut

Pennsylvania

Massachusetts

Georgia

New York

Maryland

Tennessee

Ontario

Arkansas

Ohio

Indiana

Illinois

None

Global map shows oil slicks in 1990s, depicted by black-shaded areas along coastlines, notably in East and Southeast Asia, Arabian Peninsula, East and West Africa, Cape of Good Hope, Mediterranean, Western Europe, North Atlantic, and America coastlines.

Generalized historical oil slicks.

Oil Slicks (1990s)

World

Geosystems: Intro to Physical Geography

Utah

A map illustrates high- and low-pressure zones worldwide for January, with high-pressure zones marked in red and low-pressure zones in blue.

Locations of high- and low-atmospheric pressure at mean sea level during January.

High- and Low-Pressure Zones, January

High-Pressure Zones are found in Western North America (1,022 millibars), Northwest Africa (1,024 millibars), North-central Asia (1,044 millibars), Southeast Pacific (1,018 millibars), South Atlantic (1,022 millibars), South Indian Ocean (1,022 millibars) Low-Pressure Zones are found in North Pacific near the Aleutian Islands (984 millibars), North Atlantic near Greenland and Iceland (992 millibars), along the equator in the Central Pacific Ocean, Central Africa, and Western Pacific Ocean, and around the coasts of Antarctica (three lows at 980 millibars).

nature

Anthropogenic Biomes

Areas at Risk of Soil Degradation

Average Annual Precipitation

Biomes

Climate Zones

Global Mean Temperature, January

Global Mean Temperature, July

Global Surface Warming: Worst-Case Projections (NASA)

Insolation

Land Cover

Major Soil Orders

Prevailing Agricultural Practices

World Elevations

Display by:	Oil Slicks (1990s)	High- and Low-Pressure Zones, January
	Oil Slicks (1990s)	High
Alaska	0.113%
District of Columbia	100%
Florida	0.837%
New Hampshire	57.6%
Rhode Island	95.0%
Vermont	5.93%
Washington	0.496%
Maine	5.06%
Kentucky	39.9%
Nova Scotia	1.05%
Virginia	62.1%
Delaware	99.3%
Prince Edward Island	0.308%
Mississippi	29.7%
West Virginia	3.63%
Texas	19.3%
Louisiana	89.8%
Hawaii	1.73%
North Carolina	16.0%
Alabama	8.82%
British Columbia	0.210%
New Jersey	99.2%
Connecticut	99.9%
Pennsylvania	24.2%
Massachusetts	98.1%
Georgia	0.104%
New York	26.9%
Maryland	76.4%
Tennessee	1.03%
Ontario	2.30%
Arkansas	0.397%
Ohio	18.7%
Indiana	44.2%
Illinois	6.79%
Utah		1