The effects of ice age boundary conditions on atmospheric dynamics and regional climate patterns are
NASA Technical Reports Server (NTRS)
changes is the occurrence of ice ages in Earth's past. The ice ages point to the global climate having in Earth's history and may last around a million years. Examples of major ice ages longer periods of time. For example, the ...
E-print Network
Finally, the Milankovitch Theory will be explored as an explanation for the existence of ice ages. Background knowledge / teacher notes: Climate results from the ...
NASA Website
... provide: (1) an objective characterization of the Little Ice Age and climate history in New England, (2) ... ...
NBII National Biological Information Infrastructure
Sep 18, 2008 ... Penny Ice Cap is the southernmost of Canada's big ice caps. ... been going on since the end of a climate period called the Little Ice Age. ...
Earth's climate record, preserved in tree rings, ice cores, and coral reefs, ... For example, at the end of the last ice age, when the Northeast United ...
Yosemite Valley - YOSEMITE Palisades Glacier - PALGLAC Glacier Movement - GLACIER1 Glacial Ice During Ice Age - GLACIAL The Earth's Climate System - CLIMSYS ...
In this lesson, students identify the relationship between global climate change and Earth's ice volume and sea level. They also interpret climatic history through examining the characteristics and relative ages of layers of ice in an ice core sample.
NSDL National Science Digital Library
Sep 1, 2011 ... Description: Modelled changes in climate water deficit between past, ... Keywords : California, climate change, forest vegetation, Little Ice Age, ...
Treesearch
And yet to survive climate change during and since the last ice age, trees and ... When the last ice age began to release the Earth from its wintry grip, warmer ...
Dec 17, 2003 ... The "pacemakers" of ice ages on Mars appear to be much more extreme than the comparable drivers of climate change on Earth. ...
... Therefore the Little Ice Age record of glacial fluctuation in Alaska may provide a good proxy for these events and a test for models of future climatic ...
DTIC Science & Technology
... Title : Harry S. Truman Dam and Reservoir, Missouri: Ice Age Climates: Plants and Animals of Western Missouri: A 50,000 Year Records of Change. ...
This is technical comment and response to the subject of paleotophography of glacial age ice sheets. The model presented by Peltier reconstructing the paleotopography of glacial age ice sheets has implications for atmospheric general circulation models of ice age ...
Energy Citations Database
of geochemical parameters for climatic periods at the end of the last ice age as measured in GISP2 d18 Oice a [CH^kitsoq that range from full glacial conditions through the climate reversals at the end of the last ice age than deep ice-coring projects, ...
for making the climate of the last major ice age much colder than the modern climate. Such physical factors~ Annals of Glaciology 5 1984 @ International Glaciological Society ICE-AGE CLIMATE AND C the cold ice-age climate, even ...
Previous studies have used melt layers in Arctic ice cores to infer Holocene ... climatic events such as the Little Ice Age and the Medieval Warm Period. ...
Ice cores provide the world's most complete and continuous record of climatic change back through the last ice age and into the last interglacial period. ...
This article discusses new information about the ice age tropics as cores from a mountain glacier in the Peruvian Andes are analysed. Chemical markers in the ice of the two cores (160 and 166 meters long), covering 20,000 years, are starting to provide detailed support for understanding the ice ...
under a Creative Commons License. Climate of the Past New constraints on the gas age-ice age difference the surround- ing ice. Firn densification models are used to evaluate this ice age-gas age difference ( age- plied to the EPICA ...
These climate changes were more profound than any in recorded human history, vastly exceeding, for example, the Little Ice Age, which peaked in the ...
... Radiometric Determination of Uranium, Thorium and Potassium in Some Rocks of the Guanajuato Mineral District, Mexico,. ...
Quantitative geologic evidence is used to reconstruct boundary conditions for the climate 18,000 years ago. (Author)
National Technical Information Service (NTIS)
Short Paper Ice-core pollen record of climatic changes in the central Andes during the last 400 yr of Washington. All rights reserved. Keywords: Altiplano; Climate change; Ice core; Little Ice Age; Pollen to record the vegetation responses to climate ...
Sep 1, 2011 ... Two warm, dry periods of 150- and 200-yr duration occurred during AD ... followed by anomalously cold climates, known as the Little Ice Age, ...
... on ice-age climate; (2) organization of a data-exchange program with the Soviet Union; (3) formation and analysis of a data bank for pollen data; (4 ...
. Indeed, climate simulations show that at high obliquity water ice from the north polar cap precipitates the residual water cap is covered with carbon dioxide ice year round, and values estimated to be as high as 1LETTERS Dynamics of ice ages on Mars Norbert Schorghofer1 Unlike Earth, where ...
ARCTIC - Arctic Station data consisting of tritium, tritium age, tritium/helium age, depth, ocean fraction, ice fraction, river ...
: sea ice; CO2; tropical Pacific; sea surface temperature; Plio�Pleistocene; ice age 1. Introduction results were averaged over the last 20 yrs of the experiments. 3. Results 3.1. Sea-ice forcing in sea ice are also uncertain; however differences between last glacial and modern ...
be related to changes in climate that occurred during the Little Ice Age, when the ice cap may have been since the last mass balance calculation. This is particularly relevant to the Vavilov Ice Cap, which Balance of Ice Caps on Severnaya Zemlya, Russian High Arctic. II: ...
Greene, A.M., W.S. Broecker, and D. Rind, 1999: Swiss glacier recession since the Little Ice Age: Reconciliation with climate records. Geophys. Res. ...
In order to simulate the climate of an ice age, a two-level, quasi-goestrophic, spectral general circulation model for the northern hemisphere is developed. Horizontal diffusion and vertical shearing stresses are incorporated along with a diabatic heating...
May 7, 2008 ... Major cool periods were ice ages, with the most recent ending about 11000 years ago. "Right now, we are in between major ice ages, in a ...
Jan 10, 2010 ... -----New clues to an ice age mystery-----. Hu and his colleagues set out to solve a key mystery of the last glacial period: Why, ...
A resource for the teaching of the history and causes of climate change. Discusses evidence of climate change from the Viking era, early ice ages, the most recent ice age, natural causes of climate change, human-made causes of ...
ERIC Educational Resources Information Center
A classic 1976 study, CLIMAP, indicated that the tropical ocean cooled less than 2C during the worst of the last ice age while the rest of the world experienced a 5C chill. However, this climatic buffering in the tropics has come under attack with new evidence and possible errors in the original study. This article discusses new ...
The analyses of two ice cores from a southern tropical ice cap provide a record of climatic conditions over 1000 years for a region where other proxy records are nearly absent. Annual variations in visible dust layers, oxygen isotopes, microparticle concentrations, conductivity, and identification of the historical (A.D. 1600) ...
PubMed
The paleoclimatic significance of the perennial ice deposit in Sc?ri?oara Ice Cave has been remarked on since the early 20th century, but a lack of understanding of the processes involved in the genesis, age and long-term dynamics and volume fluctuations of ice hampered all attempts to extract valuable data on past ...
NASA Astrophysics Data System (ADS)
Models suggest that dramatic changes in the ocean circulation are responsible for abrupt climate changes during the last ice age and may possibly alter the relative climate stability of the last 10,000 years.
PubMed Central
There is now worldwide evidence of short-term increases in the earth's temperature during the last ice ages. This evidence comes from South American glaciers, Antarctic ice cores, and sediment cores from the tropical oceans, as well as Greenland ice cores. Researcher are unsure of the causes of these ...
The paleoclimatic significance of the perennial ice deposit in Sc?ri?oara Ice Cave has been remarked since the early 20th century, but a clear understanding of the processes involved in the genesis, age and long-term dynamics of ice hampered all attempts to extract valuable data on past climate ...
At the Stable Isotope Lab in Boulder, Colo., geoscientists work primarily with one raw material: ancient ice, in the form of ice cores. The ice cores come from Greenland and Antarctica. The information extracted from this ice could play a critical role in understanding and preparing for any imminent changes to our ...
FOR IMMEDIATE RELEASE November 6, 1995 ... Not much is known about western China and what the climate was like there over the last few ice ages. ...
This record gives us the Kenai climate since the last ice age, which is then comparable to sites westward (Kodiak, the Alaskan Peninsula) and southeastward ...
Nov 15, 2010 ... According to scientists, Lake Lahontan formed during the last Ice Age when the regional climate of Nevada was significantly cooler and ...
There have been speculations on the relationship between climatic cooling and polarity reversals of the earth's magnetic field during the Pleistocene. Two of the common criticisms on this relationship have been the reality of these short duration geomagne...
Applicability, DOE Technical Report, August 1981 Top Documents about Climate Change and Global Warming Global Warming and Ice Ages: I. Prospects For Physics Based Modulation of...
Science.gov Websites
Mar 2, 2002 ... Although it is now the largest desert on Earth, during the last ice age the Sahara was a savannah with a climate similar to that of present-day ...
Mars, like Earth, appears to have experienced global climate changes over the past few million years. The effects of Earth's ice ages are well recorded in ...
... University Press, Oxford. Dawson, A. G. 1992. Ice Age Earth. Late Quaternary geology and climate. Routledge, New York. ... ...
... and 19,000 years) as the quasi-periodic precession index. 5) The dominant, 100,000-year climatic ... ...
Jun 16, 2011 ... A distinct decline in fire activity in the late 16th Century corresponds with anomalously low temperatures during the Little Ice Age and a ...
Introduction Alpine glaciers have generally receded during the past century (post-'Little Ice Age') because of climate warming (Oerlemans and others, 1998; ... ...
Climate records preserved in the Greenland ice sheet got a lot of the attention at the fall meeting of the American Geophysical Union (AGU) in San Francisco last month, but ancient tropical records were a rival attraction. In talks scattered in unrelated sessions, researchers reported a possible role for the tropics in driving the last ...
This resource provides an overview of the concept of climate change and discusses past climate changes, as evidenced by sea sediments and sedimentary rock studied by paleoclimatologists. More recently, ice cores, tree rings, and historical records tell of changes such as interglacial periods and the little ice ...
Apr 6, 2009 ... Arctic sea ice works like an air conditioner for the global climate system. ... have typically used estimates of ice age to approximate its thickness. But last year a team of researchers led by Ron Kwok of NASA's Jet ...
