This is what global warming looks like.
First, a recent lecture about the state of climatological understanding by Professor Howard Spero. It includes a good question and answer session. Following by a short NASA video about our cryosphere based on satellite images.
The study of climate change through Earth history has produced a wealth of information on the operation of the ocean-atmosphere system during climate transitions as well as the feedbacks that impact the magnitude and rate of climate change on the planet.
Although the understanding of the science of climate is built on a firm foundation, much confusion exists regarding the potential and rate of change in the modern world. In this talk, Dr. Howard Spero will explore the basic science of the Earth's climate system and examine the natural cycles of climate change in Earth history that have been discovered through the study of glacial ice sheets and deep ocean cores.
Utilizing the lessons learned these studies, Dr. Spero will attempt to demystify the realities of phenomena such as ocean (and Lake Tahoe) acidification and the potential for a warmer Earth in the not too distant future. [Show ID: 24674]
The cryosphere consists of those parts of the Earth's surface where water is found in solid form, including areas of snow, sea ice, glaciers, permafrost, ice sheets, and icebergs. In these regions, surface temperatures remain below freezing for a portion of each year. Since ice and snow exist relatively close to their melting point, they frequently change from solid to liquid and back again due to fluctuations in surface temperature.
Although direct measurements of the cryosphere can be difficult to obtain due to the remote locations of many of these areas, using satellite observations scientists monitor changes in the global and regional climate by observing how regions of the Earth's cryosphere shrink and expand.
Video credit: NASA/Goddard Space Flight Center Scientific Visualization Studio The Blue Marble Next Generation data is courtesy of Reto Stockli (NASA/GSFC) and NASA's Earth Observatory. Historic calving front locations courtesy of Anker Weidick and Ole Bennike, Geological Survey of Denmark and Greenland
Venture on an epic quest to discover the invisible forces and occurrences that sustain life on this planet and - for the first time - see these processes in action in EARTH FROM SPACE. This sweeping two-hour special reveals the Earth's deepest mysteries, captured in breath-taking detail, and raises profound questions and challenges the old assumptions of how it all works. Using the latest CGI technology, and joining NASA and the world's foremost Earth scientists, EARTH FROM SPACE transforms raw satellite data into a visible spectrum, offering viewers authentic, high-definition moving images that vividly illustrate these processes at work.
In consultation with more than 220 scientific experts from 18 international Earth sciences research agencies and academic institutions, highlights from EARTH FROM SPACE reveal:
A hurricane - observed from the inside - is an intricately-organized structure. See how it bonds water to atmosphere, and releases heat into space, cooling parts of the Atlantic by 4C.
The Amazon produces 20% of the Earth's fresh water. Where does all this water go and what is its effect on air circulating around the planet and life across the globe?
See how solar storms puncturing great holes in the magnetic field raise new questions about the disruptive effect they have on life on a microscopic level.
Data shows that the top three meters of the ocean stores more heat than the entire atmosphere - overturning the long-held assumptions about how the ocean controls weather and climate.