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NOAAs National Weather Service

NOAAs National Weather Service

Storm Chaser Official World Homepage Clouds Over Mount Shasta You will often hear the expression, "Mount Shasta makes its own weather." How can a mountain make its own weather? The main answer is that Mount Shasta's presence causes air to be uplifted. All precipitation comes from clouds. The term orographic comes from the Greek word oros, meaning mountain. Mount Shasta is known for its beautiful clouds. Lenticular Cloud over Mount Shasta Photo © 1989 Barrie Rokeach Clouds are the visible expression of the process known as condensation. Shasta looms majestically in the pure ether, capped with a cloud, against whose bosses the early sungold is beating... Lenticular cloud over Mount Shasta, reflected in Siskiyou Lake Photo © 2001 Jane English Clouds are constantly changing shape and so it is sometimes difficult to categorize them. Rather than having what Howard called groups, clouds today are often categorized into forms. Ten common cloud types, all named and recognized by Howard, are described below. Cirrus Cirrocumulus Cirrostratus Altocumulus Cumulus

Global Climate Change: Research Explorer The earth’s climate has warmed and cooled for millions of years, since long before we appeared on the scene. There’s no doubt that the climate is growing warmer currently; indications of that change are all around us. Though climate change isn’t new, the study of how human activity affects the earth’s climate is. The exploration of climate change encompasses many fields, including physics, chemistry, biology, geology, meteorology, oceanography, and even sociology. At this Web site, you can explore scientific data relating to the atmosphere, the oceans, the areas covered by ice and snow, and the living organisms in all these domains.

Mount Washington Observatory (MWOBS) - White Mountains, New Hampshire (NH) Får ikke flytte hjem ennå Det har vært bevegelser i leirmassene i rasområdet i løpet av natta. Ingen får flytte hjem i dag, men noen kan få hente ting de trenger inne i husene i rasområdet på Byneset i Trondheim. Regionsjef i Norges Vassdrags og Energidirektorat, Kari Øvrelid sier at leira og jordmassene i rasområdet på Byneset i Trondheim har beveget seg i løpet av natta og det gjør situasjonen usikker. De gjør seg klare til å inspisere raskanten. Nye vurderinger – Først og fremst skal vi undersøke rasområdet grundig, sier Øvrelid. I samarbeid med Trondheim kommune skal de få satt opp en borerigg for å finne ut hvor ustabil leira er rundt selve raset. – Vi håper at leira er stabil, men vi lar oss bekymre så lenge det skjer ting i rasgropa, sier Øvrelid. Vet ikke om det har rast ferdig Rasområdet granskes også fra lufta. Får ikke flytte hjem Det betyr at de 35 personene som fortsatt er evakuert, ikke får flytte hjem med det første, men trolig får en del av dem hente ting hjemmefra. Katastrofealarm

Lightning What is lightning? Lightning refers to one of the several forms of visible electrical discharge produced by thunderstorms. It is essentially a giant spark that jumps between vast pools of positive and negative electrical charge that form inside thunderstomrs The primary forms of lightning discharges are cloud-to-ground (CG), cloud-to-cloud (CC), in-cloud (IC) and cloud-to-air (CA). Rare forms also include ball lightning. Lightning appears very bright because it is - its optical output is equivalent to some 100 million light bulbs going on and off. How hot is lightning? What are the electrical currents within a lightning discharge? How often does lightning occur on our planet in a year? Why does lightning appear to flicker? Does lightning strike up or down? How many kinds of cloud-to-ground flashes are there? What is thunder? How far away was the last lightning bolt? How often does lightning strike the ground in the U.S. each year? How wide is a bolt of lightning? What is a fulgerite?

10 Rare Cloud Formations Our World This is a list of what I believe to be the top 10 rarest cloud formations. And a brief description of each. No particular order in how ‘rare’ they are though. 1. These rare clouds, sometimes called mother-of-pearl clouds, are 15 – 25km (9 -16 miles) high in the stratosphere and well above tropospheric clouds. Nacreous clouds shine brightly in high altitude sunlight up to two hours after ground level sunset or before dawn. 2. Mammatus are pouch-like cloud structures and a rare example of clouds in sinking air. 3. Also known as jellyfish clouds due to their jellyfish-like appearance. 4. Noctilucent Clouds or Polar Mesopheric Clouds: This is an extroadinarily rare cloud formation that occurs out on the verge of space between 82km to 102 km from the earth’s surface. 5. A mushroom cloud is a distinctive mushroom-shaped cloud of smoke, condensed water vapor, or debris resulting from a very large explosion. 6. Average height is around 16,500 ft. 7. 8. 9. 10. Contributor: Adam Winkles

WWLL Network Global Lightning Locations New study finds geologic sequestration &is not a practical means to provide any substantive reduction in CO2 emissions& By Joe Romm on April 27, 2010 at 1:23 pm "New study finds geologic sequestration “is not a practical means to provide any substantive reduction in CO2 emissions”" Carbon capture and storage (CCS) has dug itself into quite a deep hole. Costs remain very, very high (see Harvard study: “Realistic” first-generation CCS costs a whopping $150 per ton of CO2 “” 20 cents per kWh!). Now comes a new study in the Journal of Petroleum Science and Engineering, “Sequestering carbon dioxide in a closed underground volume,” by Christene Ehlig-Economides, professor of energy engineering at Texas A&M, and Michael Economides, professor of chemical engineering at University of Houston. Published reports on the potential for sequestration fail to address the necessity of storing CO2 in a closed system. The study concludes: In applying this to a commercial power plant the findings suggest that for a small number of wells the areal extent of the reservoir would be enormous, the size of a small US state.