Middletown Township near Highlands in Monmouth County, New Jersey — The American Northeast (Mid-Atlantic)
Climate Crisis
Sandy Hook Unit, Gateway National Recreation Area
— National Park Service, U.S. Department of the Interior —
The Earth is Warming…
The Greenhouse Gases (GHGs)
• Carbon dioxide (CO2)
• Nitrous oxide (N2O)
• Methane (CH4)
• Water Vapor
The Greenhouse Effect
The greenhouse effect is a natural warming process.
Some sunlight that hits the earth is reflected. Some is trapped by greenhouse gases in the atmosphere and becomes heat.
The amount of greenhouse gases in the atmosphere is increasing rapidly, causing the Earth's temperature to rise quickly.
Sources of GHGs in the US by Human Activity
CO2: Electricity 35%
CO2: Transportation 27%
CO2, N2O: Industry 20%
N2O, CH4: Agriculture 7%
CO2: Commercial 6%
CO2: Residential 5%
…Causing Sea Levels to Rise
Expected global sea-level rise by 2100: more than 2 feet
As seawater heats up, it expands, raising sea level.
this page online
⬆️ .13 in/yr
(3.27 mm/yr)
⬇️ Compaction of recent sand, silt, and organic material
⬇️ Sinking of older portion continent
Thermal Expansion ➕ Melting Glaciers and Ice Sheets ➕ Subsidence
See how much of this glacier has melted over the past century! [The glacier is shown in 1907 and 2004.]
Erected by National Park Service, U.S. Department of the Interior.
Topics. This historical marker is listed in these topic lists: Environment • Waterways & Vessels. A significant historical year for this entry is 1907.
Location. 40° 27.696′ N, 74° 0.127′ W. Marker is near Highlands, New Jersey, in Monmouth County. It is in Middletown Township. Marker is at the intersection of Hudson Road and Hudson Drive, on the right when traveling west on Hudson Road. Touch for map. Marker is at or near this postal address: 84 Mercer Rd, Highlands NJ 07732, United States of America. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Sandy Hook Light (here, next to this marker); Sarah Patterson Johnson (a few steps from this marker); Keeping the Light (a few steps from this marker); Sandy Hook (within shouting distance of this marker); Lighting the Way
Photographed By Devry Becker Jones (CC0), October 15, 2022
3. Additional sign adjacent to the marker
Credits. This page was last revised on February 7, 2023. It was originally submitted on October 18, 2022, by Devry Becker Jones of Washington, District of Columbia. This page has been viewed 80 times since then and 14 times this year. Photos: 1, 2, 3. submitted on October 18, 2022, by Devry Becker Jones of Washington, District of Columbia.
