The Global Land Ice Measurements from Space (GLIMS) project released Version 5.0 of the RGI in 2015 (Arendt et al. 2015).
A new book from the international GLIMS (
Global Land Ice Measurements from Space) initiative, an international collaboration including the National Snow and Ice Data Center at the University of Colorado [continue reading...]
For example, with Étienne Berthier, of the Laboratoire d'Études en Géophysique et Océanographie Spatiales in Toulouse, I am writing a chapter on the Subantarctic for a book about GLIMS,
the Global Land Ice Measurements from Space initiative.
It's also worth pointing out that
global land ice and global sea ice continue to decline, absorbing heat without warming as they melt.
If we assume the warmist notion that
global land ice is shrinking AND dO is increasing during the pause, then we should see sea level rising at an accelerating rate.
In:
Global Land Ice Measurements from Space.
Global Land Ice Measurements from Space (GLIMS).
Global Land Ice Measurements from Space.
Is the 360 GT per year just from Antarctic land ice or
global land ice >
Some people say the Snowball did cause global sea icecover, and essentially
global land ice cover.
He and UA geologist Gregory Leonard called on colleagues in
the Global Land Ice Measurements from Space (GLIMS) network that Kargel led to help identify affected areas by using satellite imagery.
That size cutoff is standard practice,» says Bruce Raup of the University of Colorado in Boulder, who is also director of
the Global Land Ice Measurements from Space project, an international glacier monitoring project.
Kargel is the international coordinator of
Global Land Ice Measurements From Space, a satellite program dedicated to photographing each glacier on Earth every year.
Not exact matches
Given the potentially catastrophic contribution of such
land ice to
global sea level rise, a better understanding of
ice dynamics is one of the key goals of the IPY.
Alaskan and the Canadian Arctic
land - based glacier melt ranks with that of the Greenland
Ice Sheet as important contributors to
global sea - level rise that is already underway.
They range from LANDSAT images of
land use in the Chesapeake Basin, to fish catches off California since the 1920s, to 400,000 years of
global temperature estimates from antarctic
ice cores.
The degradation of the historically stable Filchner - Ronne
Ice Shelf would upset ice on land, triggering runaway melting over a vast region of the continent and accelerating global sea level ri
Ice Shelf would upset
ice on land, triggering runaway melting over a vast region of the continent and accelerating global sea level ri
ice on
land, triggering runaway melting over a vast region of the continent and accelerating
global sea level rise.
Current projections of
global sea level rise do not account for the complicated behavior of these giant
ice slabs as they interact with the atmosphere, the ocean and the
land.
The Nature article comes as climate scientists published what they said today was the «best ever» collection of evidence for
global warming, including temperature over
land, at sea and in the higher atmosphere, along with records of humidity, sea - level rise, and melting
ice.
When all the heat accumulating in the oceans, warming the
land and atmosphere and melting
ice is tallied up, we see that
global warming is still happening.
«The reason for the layering is that
global warming in parts of Antarctica is causing
land - based
ice to melt, adding massive amounts of freshwater to the ocean surface,» said ARC Centre of Excellence for Climate System Science researcher Prof Matthew England an author of the paper.
Rising
global temperatures have also made glaciers —
ice masses that currently occupy nearly 10 percent of the world's total
land area — increasingly unstable.
In Stage 4, these aerosol models are validated and coupled to
global climate models, which also incorporate models of the
land surface, ocean, and sea
ice.
In the first comprehensive satellite study of its kind, a University of Colorado at Boulder - led team used NASA data to calculate how much Earth's melting
land ice is adding to
global sea level rise.
This composite of 7.5 km (4.7 mi) per pixel daily
global images, acquired by the Mars Global Surveyor (MGS) Mars Orbiter Camera (MOC), shows water ice clouds over and to the east (right) of the Mars Exploration Rover (MER - B), Opportunity, landing site in Meridiani P
global images, acquired by the Mars
Global Surveyor (MGS) Mars Orbiter Camera (MOC), shows water ice clouds over and to the east (right) of the Mars Exploration Rover (MER - B), Opportunity, landing site in Meridiani P
Global Surveyor (MGS) Mars Orbiter Camera (MOC), shows water
ice clouds over and to the east (right) of the Mars Exploration Rover (MER - B), Opportunity,
landing site in Meridiani Planum.
Two missions will use space - borne lasers to measure tree height: an instrument mounted on the International Space Station, called the
Global Ecosystem Dynamics Investigation (GEDI); and a satellite called the
Ice, Cloud and land Elevation Satellite - 2 (ICESat - 2), that will focus on measuring snow and ice, but will also measure the planet's fores
Ice, Cloud and
land Elevation Satellite - 2 (ICESat - 2), that will focus on measuring snow and
ice, but will also measure the planet's fores
ice, but will also measure the planet's forests.
During glaciation, water was taken from the oceans to form the
ice at high latitudes, thus
global sea level drops by about 120 meters, exposing the continental shelves and forming
land - bridges between
land - masses for animals to migrate.
However, the share of thermal expansion in
global sea level rise has declined in recent decades as the shrinking of
land ice has accelerated (Lombard et al 2005).
In addition, since the
global surface temperature records are a measure that responds to albedo changes (volcanic aerosols, cloud cover,
land use, snow and
ice cover) solar output, and differences in partition of various forcings into the oceans / atmosphere /
land / cryosphere, teasing out just the effect of CO2 + water vapor over the short term is difficult to impossible.
Geoengineering proposals fall into at least three broad categories: 1) managing atmospheric greenhouse gases (e.g., ocean fertilization and atmospheric carbon capture and sequestration), 2) cooling the Earth by reflecting sunlight (e.g., putting reflective particles into the atmosphere, putting mirrors in space to reflect the sun's energy, increasing surface reflectivity and altering the amount or characteristics of clouds), and 3) moderating specific impacts of
global warming (e.g., efforts to limit sea level rise by increasing
land storage of water, protecting
ice sheets or artificially enhancing mountain glaciers).
These wildfires release soot into the atmosphere, which accelerates the rate of melting of glaciers, snow and
ice it
lands upon, which can lead to less reflectivity, meaning more of the sun's heat is absorbed, leading to more
global warming, which leads to even more wildfires, not to mention greater sea level rise, which is already threatening coastal areas around the world.
«GCM — General Circulation Model (sometimes
Global Climate Model) which includes the physics of the atmosphere and often the ocean, sea
ice and
land surface as well.»
Global average temperature is lower during glacial periods for two primary reasons: 1) there was only about 190 ppm CO2 in the atmosphere, and other major greenhouse gases (CH4 and N2O) were also lower 2) the earth surface was more reflective, due to the presence of lots of
ice and snow on
land, and lots more sea
ice than today (that is, the albedo was higher).
Polar bears living in regions (such as Hudson's Bay and Svalbard) that were not
ice covered all year round even before
global warming spend the warmer months on
land where they are a real danger (male polar bears are the only healthy carnivore that routinely stalks and hunts people).
Antarctic
land ice won't reach equilibrium with
global climate for hundreds if not thousands of years.
There are contexts in which the statement would be true: what will happen to the polar
ice caps, crop
land, deserts, etc., as a result of
global warming over time.
On decadal and longer time scales,
global mean sea level change results from two major processes, mostly related to recent climate change, that alter the volume of water in the
global ocean: i) thermal expansion (Section 5.5.3), and ii) the exchange of water between oceans and other reservoirs (glaciers and
ice caps,
ice sheets, other
land water reservoirs - including through anthropogenic change in
land hydrology, and the atmosphere; Section 5.5.5).
bozzza - The differences in the Arctic are perhaps 1/4 the ocean thermal mass as
global ocean averages, small overall size (the smallest ocean), being almost surrounded by
land (which warms faster), more limited liquid interchanges due to bottlenecking than the Antarctic, and very importantly considerable susceptibility to positive albedo feedbacks; as less summer
ice is present given current trends, solar energy absorbed by the Arctic ocean goes up very rapidly.
Even if
global warming emissions were to drop to zero by 2016, scientists project another 1.2 to 2.6 feet of
global sea level rise by 2100 as oceans and
land ice adjust to the changes we have already made to the atmosphere.
It combines representations of the
global economy, energy systems, agriculture and
land use, with representation of terrestrial and ocean carbon cycles, a suite of coupled gas - cycle, climate, and
ice - melt models.
This thermal expansion was the main driver of
global sea level rise for 75 - 100 years after the start of the Industrial Revolution, though its relative contribution has declined as the shrinking of
land ice has accelerated.
land ice, Greenland, Antarctica,
ice melt,
ice sheet, NASA GRACE,
global warming, climate change, fossil fuel emissions, greenhouse effect, melting polar
ice caps, rising sea levels
These methods have been significantly improved by fully coupling the hydrologic cycle among
land, lake, and atmosphere.94, 95 Without accounting for that cycle of interactions, a study96 concluded that increases in precipitation would be negated by increases in winter evaporation from less
ice cover and by increases in summer evaporation and evapotranspiration from warmer air temperatures, under a scenario of continued increases in
global emissions (SRES A2 scenario).
Over the long - term, melting of the West Antarctic
Ice Sheet could yield as much as 10 to 14 feet of
global average sea level rise, with local sea level rise varying considerably depending on
land elevation trends, ocean currents and other factors.
The Davis Strait polar bear subpopulation is said to be «vulnerable» to the supposed effects of
global warming because, like Hudson Bay, Davis Strait sea
ice retreats every summer, leaving polar bears on
land for several months.
In Northeast
Land and Svalbard, the melting waters on the
ice caps are the tears of the Earth mourning the future death of men and civilizations as the concentration of carbon dioxide in the atmosphere spikes and
global warming proceeds rapidly, killing millions of marine organisms, and increasing the acidification of the oceans.
The confusion on this subject lies in the fact that only about 2 percent of
global warming is used in heating air, whereas about 90 percent of
global warming goes into heating the oceans (the rest heats
ice and
land masses).
This was the conclusion of a scientific paper I co-authored last year, in which our team found more overall
global warming (of the oceans, air,
land, and
ice combined) over the past 15 years than during the prior 15 years.
And while you are doing that, davie, you might tell us in your own words how less than 1c warming since the end of the little
ice age and the beginning of the industrial revolution, measured with ever changing systems in areas of exponential
land use change by people who have a total, consensual belief in
global warming by ACO2 and no demonstrable scientific scepticism whatsoever, must constitute a «bad thing», awa being scientifically based and believable.
Consistent with the aforementioned sea level rise acceleration, a number of articles have projected
global sea level rise of around 1m or more by 2100, based on past estimates of sea level rise (in response to warming) and based on melting of
land ice (with thermal expansion):