British Columbia

Québec

None

A map highlights the high-pressure regions in North America with a letter H enclosed in a circle. Near Columbia Kootenay Mountain and, near Ottawa.

A region where atmospheric pressure at the surface is greater than surrounding areas

High Pressure

North America

NOAA

Alaska

Yukon

Northwest Territories

Florida

Rhode Island

Washington

Nunavut

Maine

Nova Scotia

Virginia

Delaware

Prince Edward Island

Texas

Louisiana

Hawaii

North Carolina

New Brunswick

Alabama

Newfoundland and Labrador

New Jersey

South Carolina

Connecticut

Massachusetts

New York

Maryland

Manitoba

Ontario

California

A map illustrates the different depth zones of the coastal areas. The shallowest areas (light blue), are near the coasts, such as the eastern United States and Europe. The deepest regions (dark blue), are in the Pacific and Atlantic Oceans.

Ocean Bathymetry

Shallow ocean areas near continents' coastlines range from sea level to negative 200 meters and are shaded in light yellow. Continental shelves and upper slopes, shaded in yellow, are found between negative 201 to negative 2,000 meters. Mid-ocean depths, including parts of the abyssal plains, range from negative 2,000 to negative 3,000 meters and are shaded in orange. Deeper ocean areas, extending further into the abyssal plains, range from negative 3,000 to negative 4,000 meters in dark orange. Deep ocean regions, covering significant portions of the ocean floor, range from negative 4,000 to negative 5,000 meters in dark brown. Very deep ocean trenches and basins are found between negative 5,000 to negative 6,000 meters and are shaded in blue. The deepest parts of the ocean, including the Mariana Trench and other deep-sea trenches, are below negative 6,000 meters and are represented in dark blue.

Oceans

Meters

Arizona

Arkansas

Colorado

District of Columbia

Georgia

Idaho

Illinois

Indiana

Iowa

Kansas

Kentucky

Michigan

Minnesota

Mississippi

Missouri

Montana

Nebraska

Nevada

New Hampshire

New Mexico

North Dakota

Ohio

Oklahoma

Oregon

Pennsylvania

South Dakota

Tennessee

Utah

Vermont

West Virginia

Wisconsin

Wyoming

A map shows cotton production in the U. S. States like Texas, North Carolina, and Mississippi have the highest production (dark blue). States like Washington, Oregon, and Idaho show the lowest production (lighter blue).

Annual U.S. cotton production by state

US / CA States

USDA

Cotton Production (U.S.)

Metric tons

Saskatchewan

The map shows urban air quality in terms of micrograms of particulate matter per cubic meter of air. For the purposes of this description, the five categories on the map are simplified to less 80 micrograms per cubic meter; between 80 and 200 micrograms per cubic meter; and more than 200 micrograms per cubic meter. In North America, there are several areas with multiple locations where air quality is less than 80 micrograms: in Canada, near Vancouver, British Columbia; in Alberta; and in southern Ontario and Quebec near the Great Lakes and St. Lawrence River. In the United States, areas with air pollution in this range occur in mainly in California and in the Midwest and Northeast. A few scattered locations in Mexico, Central America, and the Caribbean (Jamaica) also have pollution in this range. In South America, air quality less than 80 micrograms per cubic meter occurs in widely scattered locations, such as Caracas, Venezuela; Colombia; Ecuador; Bolivia; northern and central Chile; Buenos Aires, Argentina; and north of Rio de Janeiro, Brazil. Most of Western and Central Europe have air pollution of less than 80 micrograms per cubic meter. Exceptions include Ireland, Portugal, and Scandinavia. (In Russia, air pollution is at this level in Moscow, but east of the Urals in Siberia, there are also sites that are more polluted—between 80 and 200 micrograms. Africa has relatively little air pollution of this type, areas less than 80 micrograms include Liberia, Tanzania, Madagascar, and South Africa (the area around Johannesburg). In Southwest Asia, Turkey, Lebanon, Israel, and Cyprus have multiple sites less than 80 micrograms per cubic meter. However, Iran and the Persian Gulf states (Bahrain, Qatar, the United Arab Emirates) have multiple sites between 80 and 200 micrograms, and Iraq and Bahrain have sites that are higher than 200 micrograms. Apart from Kabul, Afghanistan, which is higher than 200 micrograms per cubic meter, there are no countries in Central Asia that have poor urban air quality according to the criteria used here. In northern Pakistan, India, and Bangladesh, there are cities with poor urban air quality—ranging from 80 to more than 200 micrograms per cubic meter. In southern India, Sri Lanka, and Nepal, pollution levels range from below 80 up to 200 micrograms per cubic meter. In Southeast Asia, pollution in Myanmar, Thailand, Laos, Vietnam, and Indonesia is generally less than 80 micrograms, except in the northern Philippines, where it is between 80 and 200. In the cities of southern and western China, pollution is less than 80 micrograms per cubic meter, except in far western Urumqi, which is between 80 and 200 micrograms. In eastern and northern China urban air pollution increases to between 80 and 200 micrograms. Mongolia has a few locations less than 80 micrograms per cubic meter and others between 80 and 200 micrograms. South Korea has numerous cities with pollution less than 80, whereas in Japan, Tokyo is the only city in this category. In Oceania, only New Zealand is identified as having poor urban air quality, with two locations on the South Island less than 80 micrograms per cubic meter.

Ambient (outdoor) air pollution levels represented by annual mean concentration of particulate matter smaller than 10 (PM₁₀), for cities of the world with more than 100,000 inhabitants

Display by:	High Pressure	Ocean Bathymetry					Cotton Production (U.S.)			Poor Urban Air Quality
	High Pressure	Sea Level to -200	-201 to -2000	-2001 to -3000	-3001 to -4000	-4001 to -5000	Class	Rank	Metric tons	Regina	Houston	Philadelphia	Oklahoma City	San Antonio	Boulder	Wichita	Portland	Irvine	Minneapolis	Boise	Winnipeg	Spring Hill	Greeley	St. Louis	Detroit	West Palm Beach	Columbus	Augusta	McAllen	Topeka	Las Cruces	Bakersfield	Oceanside	Reno	Indianapolis	Stockton	Baton Rouge	Glendale	Salinas	Trenton	Aurora	Modesto	Nogales	Rock Island	Fresno	Covington
Yukon		0.521%
Northwest Territories		5.35%	0.496%
Nunavut		13.1%	0.925%
Nova Scotia		25.6%
Prince Edward Island		100%
New Brunswick		4.32%
British Columbia	1	3.13%	0.166%
Newfoundland and Labrador		3.93%
Québec	1	1.33%
Ontario		0.732%
Alabama		0.218%						6	183,000
Alaska		5.00%	0.196%					43	0
Arkansas								3	342,000
Connecticut		2.84%						36	0
Delaware		0.467%						28	0
District of Columbia								48	0
Hawaii		1.62%	37.5%	4.46%	2.11%	0.113%		33	0
Iowa								19	0
Kentucky								30	0
Maryland		6.45%						47	0
Massachusetts		10.2%				0.220%		49	0
Mississippi								4	257,000
Missouri								7	181,000
Montana								41	0
Nebraska								39	0
New Hampshire								37	0
New York		2.96%						25	0
North Carolina		1.71%						5	218,000
North Dakota								29	0
Oregon								26	0
Pennsylvania								27	0
Rhode Island		12.2%						50	0
South Carolina		0.154%						9	115,000
South Dakota								18	0
Tennessee								8	155,000
Utah								21	0
Vermont								22	0
Virginia		1.98%						13	46,800
Washington		0.845%						40	0
West Virginia								42	0
Wisconsin								45	0
Wyoming								23	0
Arizona								12	61,000
Florida		5.18%						16	37,000
Idaho								31	0
Maine		1.83%						20	0
Saskatchewan										1
Texas		0.376%						1	751,000		1
Louisiana		2.97%						11	78,400
New Mexico								17	26,800
Kansas								15	39,200
New Jersey		10.6%						32	0			1
Michigan								35	0
Colorado								46	0
Nevada								44	0
Georgia								2	566,000
Manitoba		0.281%
Oklahoma								14	45,700
California		1.53%	0.275%					10	94,500
Ohio								34	0
Indiana								24	0
Minnesota								38	0
Illinois								51	0

MapMaster 3

High Pressure