Download Atmospheric and Oceanographic Sciences Library, Volume 41, by Josefino Comiso PDF

By Josefino Comiso

ISBN-10: 0387683003

ISBN-13: 9780387683003


Only a couple of centuries in the past, we knew little or no approximately our planet Earth. The Earth used to be thought of flat by means of many even though it was once postulated through a number of like Aristotle that it's round in keeping with observations that incorporated the research of lunar eclipses. a lot later, Christopher Columbus effectively sailed to the West to find the hot international and Ferdinand Magellan’s send circumnavigated the globe to end up as soon as and for all that the Earth is certainly a sphere. all over the world navigation and explorations that made it transparent that the Earth is massive and relatively most unlikely to check completely by means of foot or by means of water. the arrival of air commute made it much more uncomplicated to do exploratory experiences and enabled the mapping of the limits of continents and the oceans. yet plane assurance was once restricted and it was once now not until eventually the satellite tv for pc period that complete cov- erage of the Earth’s floor turned available.

Many of the early satellites have been learn satellites and that intended partially the advance of engineering dimension platforms without yes functions in brain. The Nimbus-5 Electrically Scanning Microwave Radiometer (ESMR) was once a vintage working example. The sensor was once outfitted with the concept it can be necessary for meteorological learn and particularly rainfall reports over the oceans, yet good fortune during this zone of analysis used to be very constrained. It grew to become out that essentially the most exciting purposes of this sensor was once within the examine of the ocean ice hide because the emissivi- ties of frozen and liquid sea water became out to be very varied. for hundreds of years, the ocean ice conceal was once simply considered as part of the frozen North (or South) and no-one stricken to review it other than the few curious scientists and explorers who felt that it should be vital because it is so massive. throughout the chilly conflict, the army did loads of study at the topic yet such reviews have been typically categorised as the ice coated Arctic Ocean was once a part of a strategic war and was once a terrific position for a good armed nuclear submarine to move with out being detected. It was once quickly learned that the ocean ice disguise and the polar oceans are vital entities to review, not only for army but additionally for fiscal, environmental, and climatic reasons.

ESMR used to be one of the first sensors to snapshot and symbolize the whole polar areas every day. It used to be the 1st sensor to bare the real volume and distribu- tion of the worldwide sea ice hide in addition to its seasonal variability. facts from ESMR ended in many unforeseen discoveries, together with the life of an strangely huge iciness Polynya (unfrozen floor water in the ice pack) within the Weddell Sea within the Seventies, the scale and patience of that is counter intuitive and nonetheless a subject matter of clinical inquiry as much as at the present time. we have now come a ways when you consider that ESMR. Many sensors even more complex than ESMR were introduced offering us with huge, immense features for learning the advanced procedures taking place within the polar areas and the range of a number of the parameters which are being measured by way of satellite tv for pc sensors. satellite tv for pc info at the moment are able to delivering a close heritage of the evolution of our planet over the past 3 a long time together with that of the polar regions.

This publication offers introductory fabric concerning the polar oceans, extra specifi- cally the ice coated components and peripheral seas as saw via satellite tv for pc sensors. I owe loads of fabrics for this ebook from many specialists within the box a few of whom I labored with as co-investigators and collaborators. I in particular are looking to convey my gratitude to my NASA/Goddard colleagues together with, Drs. Jay Zwally, in line with Gloersen, Claire Parkinson, Chuck McClain, Frank Carsey, Bob Bindschadler, and Don Cavalieri for a few years of collaborative reports. My old flame used to be particle physics and it used to be Jay who made me discover that the examine of the polar areas and weather is a vital and a really intriguing continuation of physics study. The encouragements and help of Drs. Stan Wilson, Bob Thomas and extra lately, Waleed Abdalati, Seelye Martin, and Tom Wagner who controlled or manages the Cryospheric Sciences software at NASA headquarters made it attainable for me to do polar study at GSFC through the years. i'm particularly thankful to Dr. Norbert Untersteiner and Dr. Willy Weeks for plenty of in-depth discussions in regards to the polar weather procedure and the elaborate approaches linked to the ocean ice hide. i've got benefited from shut collaborations with Drs. Arnold Gordon, Peter Wadhams, Stan Jacob, Steve Ackley, Manfred Lange, Neal Sullivan, Walker Smith, Koni Steffen, Rob Massom, and Ron Kwok. The writing of this publication was once began in 2006 whereas i used to be a fellow of the japanese Society for the merchandising of technological know-how and dealing as a visitor Professor at Chiba college, and i'm thankful to Prof. Fumihiko Nishio, who used to be my host, for his encouragements and sort hospitality. Larry inventory of SGT and Robert Gersten of Adnet/RSIS have supplied me first-class application- ming and research help at GSFC over the last a number of years, and that i take pleasure in greatly their committed efforts. final yet no longer least, I desire to thank my spouse, Diana, my sons Glen and David and my daughter Melissa for encouragements and endurance not only in the course of the interval of publication writing yet all through my whole profession as a polar researcher and adventurer. many helpful reviews and proposals have been supplied by means of Drs. Arthur Cracknell of the college of Dundee, united kingdom, Markus Thorston, Head of the NASA Cryospheric Sciences department, Lawrence Mysak of McGill collage and Edward Hanna of the collage of Sheffield, united kingdom. My daughter Melissa, daughter-in-law Cindy, and my spouse Diana additionally supplied a few editorial help.

While penning this publication, my mom, who have been a very good resource of idea all my lifestyles, died on the age of a hundred years. It was once a tremendous own loss for me, my brothers, and sisters however it is amazing to gain that we will be able to reside to be centenarians and may be able to adventure an important window of our altering planet and its altering weather. Our present selection of non-stop satellite tv for pc info is just a couple of a long time lengthy yet now we have definitely discovered much from them concerning the Earth’s environmental and weather procedure and in my view saw the delicate yet very important adjustments because the release of Sputnik within the past due Nineteen Fifties. With the entire satellite tv for pc information now we have and with the arrival of overseas ventures just like the international Earth remark procedure of all platforms (GEOSS), we are going to locate the solutions of lots of our present questions, yet whilst, we are going to absolutely locate many extra questions that have to be replied. The advances in our knowing of the Earth’s weather engine, together with the impression of the polar oceans were tremen- dous and we glance ahead to with the ability to forecast successfully the country of our planet within the fast and foreseeable destiny.

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Extra resources for Atmospheric and Oceanographic Sciences Library, Volume 41, Polar Oceans from Space

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References Alley RB (1985) Resolved: The Arctic controls global climate change. In: Smith WO, Grebmeier JM (Eds) Actic Oceanography: Marginal ice zones and continental shelves, American Geophysical Union, Washington, DC Broecker WS (1997) Thermohaline circulation, the Achilles heel of our climate system: Will manmade CO2 upter the current balance? Science 278(5343):1682–1588 Comiso JC (2002) A rapidly declining Arctic perennial ice cover. 1029/2002GL015650 Comiso JC, Parkinson CL, Gersten R, Stock L (2008) Accelerated decline in the Arctic sea ice cover.

At the eastern side is the Alaska Stream which is the northern boundary current of the Pacific subarctic gyre. This current goes along the southern side of the Aleutians and turn northward near the Amchitka Pass (180°) and follows the bathymetry and becomes part of the Bering Slope Current. The tracks shown in Fig. 3 Circulation patterns of subtropical gyre in the Bering Sea as derived from toy drifters and an ocean surface-current simulator program. From Ebbesmeyer et al (2007) with permission from AGU 26 2 Fundamental Characteristics of the Polar Oceans and Their Sea Ice Cover Simulator, a more detailed ocean current circulation in the region has been recreated.

The associated processes occur concurrently with strong seasonal variations in irradiance, temperature and sea ice cover. The chemical characteristics of the ocean change during each season as nutrients and carbon dioxide are consumed by algae/diatoms while the latter release oxygen and introduce organic matter when they decay. Among the most important parameter associated with the biology of global oceans is what is referred to as its primary productivity, which is loosely defined as the amount of algal, bacterial, or plant biomass built over time through the process of photosynthesis.

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