Paper Presentation

Topics: Climate, Global warming, Climate change Pages: 13 (2583 words) Published: August 16, 2013
NAME : S. VINCY
A. RAJESWARI
CONTACT NO : 9345469232
  COLLEGE : PONJESLY OF ENGINEERING,
Nagercoil - 629003.
E-mail id: vincy44454@yahoo.co.in

TOPIC: ELECTRONICS IN GLOBAL WARMING

 

TABLE OF CONTENTS:

1. ELECTRONIC MODELLING OF ICE
2. SEA MICROSTRUCTURE AND RADAR MICROSTRUCTURE
3. ICE PERMIABILITY
4. FIGHT AGAINST GLOBAL WARMING
5. TECHNOLOGY THAT FIGHT GLOBAL WARMING

 ABSTRACT:                                            

INTRODUCTION:

| | |Today people are starting to ask, “How are electronics affecting global warming?” Well with so many technical gadgets out there | |it's no wonder, and guess what. They all run off energy. Millions of people around the world use a variety of these machines | |every day, and it's beginning to add up. | |GLOBAL WARMING | |What is global warming? | |It is the observed increase in the average temperature of the Earth's atmosphere and oceans in recent decades, and its projected| |continuation. | |  | |  | | | |Electronics help predict global warming | |R. Colin Johnson | |ELECTRONIC MODELLING OF ICE: | |Earth's vast polar ice caps reflect sunlight, keeping the planet cool. As they melt, global warming accelerates. The | |Intergovernmental Panel on Climate Change predicts that the ice-packed caps may disappear between 2050 and 2100, but the panel | |admits that its prediction of the year they completely melt is only a guess. Now, by making detailed measurements of the polar | |ice's permeability, using models originally conceived for solid-state semiconductors, scientists are refining global warming | |predictions. University of Utah mathematician Ken Golden is currently on an Australian research ship in the Antarctic, | |pioneering the electronic modeling of ice permeability. | |"Here in the Antarctic sea ice pack, we are doing experiments on the permeability of sea ice," Golden said. "We are doing DC | |resistivity measurements to obtain conductivity profiles of the ice, and we saw a dramatic illustration of the percolation | |threshold yesterday." | |The percolation threshold of ice is being modeled by Golden, using the solid-state semiconductor mathematical model of effective| |conductivity in a random resistor network. There the threshold value determines the time at which a transition occurs toward | |rapidly increasing conductivity. In the ice pack version of the model, the percolation...
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