Vanguard News Network
VNN Media
VNN Digital Library
VNN Reader Mail
VNN Broadcasts

Old July 27th, 2017 #1
James Heimdal
Purveyor of Truth
 
Join Date: Jul 2017
Location: Dixie
Posts: 218
Default NASA: Graphing Sea-Level Trends

Quote:
Background

Using a variety of methods, scientists have concluded that global sea level – the average height of the sea surface across the planet – has varied substantially throughout history, especially in response to the ice ages. In recent history, starting around 7,000 years ago, sea level became quite steady, but over the last century, it’s been rising. Global tide measurements from tide gauges suggest the global sea level rose approximately 3.4 millimeters (0.13 inches) per year over the past century. The New York City area, alone, has experienced roughly a foot of sea-level rise in the past century. (That’s measured at a tide gauge near Battery Park just off the southern tip of Manhattan. While tide gauges are one way we measure sea level, changes in global sea level should not be confused with tides. Tides are the regular rise and fall of the sea surface and make it appear as if the water level of the ocean is always changing. But tides represent normal changes in the sea level that we expect to see daily and monthly.)

How do we know sea level is rising? Sea level is measured by monitoring stations on the shoreline and at sea. Satellites also collect data on the height of the sea level. There are more than 120 sea-level monitoring stations in the US and 240 additional stations worldwide. By looking at data from these stations over periods of 30 years or more, trends can be identified at individual stations and compared with other stations. This gives scientists useful information about local conditions. Those data can also be used to calculate the global average sea level and study it over time, giving scientists a picture of what’s happening to the ocean on a planet-wide scale. Sea level has been measured at some stations for more than a century, providing data about sea level going back to 1880.
Quote:
It’s important to note that when sea level rises, the total amount of water on Earth isn't increasing. Instead, the volume of liquid that fills the ocean basins is growing, raising the elevation of the sea's surface and spilling ocean water onto low-lying land. The extra volume of seawater comes from two places:
1 - Melting ice sheets and glaciers on land add water to the sea. (See the “What’s Causing Sea-Level Rise: Land Ice Vs. Sea Ice” activity for more information about how melting ice contributes to sea level rise.) Of the total contributed by glaciers to rising sea levels, the Antarctic ice sheet may contribute about 10 percent, Greenland’s ice sheet adds about 30 percent1, and the lower latitude small glaciers and ice caps, which make up only about four percent of the total land-ice area, have added as much as 60 percent since the 1990s (Meier, et al., 2007).

Quote:
2 - The second, and less obvious, cause for rising sea level is thermal expansion. Water expands as it warms, so the more heat energy the ocean absorbs, the more space its water requires. It turns out the ocean can absorb a lot of heat, so as the atmospheric temperature rises, so does the ocean temperature.

Atmospheric temperature is rising on land, near the ocean’s surface and in the lowest layer of the atmosphere as a result of increased levels of CO2. Since the beginning of the Industrial Revolution, the concentration of carbon dioxide in the atmosphere has increased by 39 percent. The majority of CO2 from human activity is created by burning fossil fuels that we use for heating, electricity and transportation. Much of this CO2 will stay in the atmosphere for thousands of years, trapping heat in the atmosphere as a result of the greenhouse effect.
Quote:
So global sea level is currently rising as a result of both ocean thermal expansion and glacier melt, with each accounting for about half of the observed sea-level rise, and each caused by recent increases in global mean temperature. From 1961 to 2003, sea level rose due to thermal expansion and glacier melt (small glaciers, ice caps, ice sheets) at a rate of 1.11 millimeters (0.04 inches) per year2. Between 1993 and 2003, the contribution to sea-level rise increased for both sources to 2.79 millimeters (0.11 inches) per year (IPCC AR4 WG1, 2007). So, not only is sea level rising, but also it is rising at a faster rate than in the past. Currently, it is rising at a rate of over three millimeters per year... More
.
.
.
.

Last edited by James Heimdal; July 27th, 2017 at 12:24 PM.
 
Old July 27th, 2017 #2
Ray Allan
Senior Member
 
Join Date: May 2014
Posts: 15,170
Default


Highly unlikely, but if the polar ice caps completely melted, ocean levels would rise about 220 feet. In the US, shitholes like Jew York City, San Freako, Los Angeles, Houston and New Orleans would be under water. All of Florida would be submerged. No great loss--still plenty of land left.
__________________
"Military men are dumb, stupid animals to be used as pawns for foreign policy."

--Henry A. Kissinger, jewish politician and advisor
 
Old July 27th, 2017 #3
notmenomore
Senior Member
 
notmenomore's Avatar
 
Join Date: Nov 2006
Posts: 3,632
Default

Quote:

...over the last century, it’s been rising. Global tide measurements from tide gauges suggest the global sea level rose approximately 3.4 millimeters (0.13 inches) per year over the past century.
On this basis we see that the past 100 year sea level rise is 13 inches or 1 foot, 1 inch. (1'-1")

If the present trend continues, we would expect to sea a fairly linear rise in mean sea levels of 13 feet (13'-0") over the next one thousand years.

Does that somehow seem to be a bit of a far cry from the chicken-littles who are predicting sea-level rises of 200 - 220 feet (220'-0")?
__________________
No way out but through the jews.
 
Old July 27th, 2017 #4
notmenomore
Senior Member
 
notmenomore's Avatar
 
Join Date: Nov 2006
Posts: 3,632
Wink

At the present rate of sea level increase we should have nearly 14,500 years to get ready for the big waters.
__________________
No way out but through the jews.
 
Old August 9th, 2017 #5
Jeffrey Smither
Senior Member
 
Jeffrey Smither's Avatar
 
Join Date: Jul 2017
Posts: 4,643
Default

Quote:
Originally Posted by Ray Allan View Post
What the Earth would look like if all the ice melted

Highly unlikely, but if the polar ice caps completely melted, ocean levels would rise about 220 feet. In the US, shitholes like Jew York City, San Freako, Los Angeles, Houston and New Orleans would be under water. All of Florida would be submerged. No great loss--still plenty of land left.
If Floriduh went under water, where would all the spics, Haitians, and trashy pill head whites and Jews live? I swear Floriduh has some of the dumbest and trashiest people of the KWA here. All the mud types trash lumped into one.
 
Reply

Share


Thread
Display Modes


All times are GMT -5. The time now is 01:03 PM.
Page generated in 0.22362 seconds.