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Topic: Pyrocumulus

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	Clouds (Site not responding. Last check: 2007-11-01)
		The bases of these clouds are often difficult to discern, as they are usually hidden by the smoke from the wildfire, but the cloud tops are normally situated well above the smokescreen.
		Pyrocumulus clouds vary widely in vertical extent, from humilis to congestus size.
		Pyrocumulus clouds may be seen wherever wildfires occur.
	www.theairlinepilots.com /met/clouds.htm (6588 words)

	NASA: Atmospheres - CANCELLED - June 10, 2005 - Lab Seminar, Eric Jensen
		Recent measurements in pyrocumulus cloud updrafts have shown that numerous smoke particles produced by the fires lead to increased concentrations of cloud droplets, narrowed droplet size distributions, and delayed precipitation compared to deep convection in unpolluted regions.
		The delayed initiation of warm rain in pyrocumulus clouds must allow more water mass to reach altitudes where droplets freeze and, consequently, greater release of latent heat when freezing occurs.
		The heights to which deep convection penetrate are critically important for the water budgets in both the tropopause layer and the upper troposphere in general.
	atmospheres.gsfc.nasa.gov /newsroom/newsroom_view.php?id=63&...&day=10 (371 words)

	The Weather Notebook \| Pyrocumulus Clouds, boiling up on the Weather Notebook.
		Pyrocumulus Clouds, boiling up on the Weather Notebook.
		Cumulus and cumulonimbus clouds often sprout from a heated surface and rising moist air.
		Usually the sun provides the heat, but where wildfires rage, a special brand of cumulus arises: the pyrocumulus cloud.
	www.weathernotebook.org /transcripts/2004/10/22.php (346 words)

	National Weather Service - NWS Spokane
		Although this fire was nearly 100 miles south of the Spokane area, its affects could be easily viewed across the southern celestial dome.
		The heat from the fire was sufficient to lift the air to great heights which resulted in the formation of a pyrocumulus cloud.
		A pyrocumulus cloud forms if there is enough moisture and atmospheric instability over the intense heat source.
	www.wrh.noaa.gov /otx/photo_gallery/fires_2005.php (588 words)

	Wildfires
		Water vapor released by the heat of a fire is sometimes lifted high enough to form pyrocumulus clouds (Latin, pyro = fire).
		When conditions are right, a line of pyrocumulus clouds may rise along the same path as a large smoke plume from a major wildfire.
		However, the scale of the fire is usually far greater than the amount of rain—if any—that falls from pyrocumulus clouds.
	www.ucar.edu /communications/factsheets/wildfires.html (2713 words)

	Did a Nuke go off in Utah? - single post for printer
		The thing that looks a little strange at first glance is the white-top of the smoke cloud.
		The heat from the fire (and the particle matter) on calm enough days can reach high enough to catalyse cloud formation.
		Go to images.google.com and do a search for 'pyrocumulus' there are some very cool images.
	www.abovetopsecret.com /forum/single.php?post=853813 (190 words)

	The Weather Notebook \| Fire Weather
		Walsh says big fires will create a smoke column that can reach 30 thousand feet, sometimes creating pyrocumulus clouds.
		TW: And these pyrocumulus are your white puffy, popcorn-like clouds.
		They can become so extreme that they can cause their own rain.
	www.weathernotebook.org /transcripts/2002/12/30.php (322 words)

	[No title]
		Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Yes the latest photos are through and they contain a Pyrocumulus with pileus and also the chase on Sunday.
		In terms of a other pyrocumulus, I saw a few years ago the most spectacular structure caused by a blazing bushfire in the.
		Date: Wed, 23 Aug 2000 20:34:02 +1000 X-Mailer: Microsoft Outlook Express 5.00.2615.200 Sender: aussie-weather-approval at world.std.com Reply-To: aussie-weather at world.std.com Hi Everyone, Whilst we are on the subject of Pyrocumulus here are two video stills of what would have to be the best Pyrocumulus I have ever seen.
	www.australiasevereweather.com /storm_news/aussiewx/2000/000823.txt (9470 words)

	June/July 2004::Wildfires in Alaska and Canada
		As of 02 July, over 1 million acres had burned in the 7 major fire complexes in Alaska.
		GOES-10 visible channel imagery from 20 June (above, left) shows the areal extent of the thick smoke (with some pyrocumulus clouds evident), while shortwave IR imagery (above, right) reveals several fire "hot spots" (fl enhancement).
		A comparison of GOES-10, GOES-11, and GOES-12 visible and shortwave IR imagery showed some interesting variations that result from the 3 different geostationary satellite viewing angles.
	cimss.ssec.wisc.edu /goes/misc/040619/040619.html (462 words)

	Location
		Miscellany: Cloud Atlas: Pyrocumulus and Altostratus with mammatus
		Added video clips from Stop 1 and "Kansas Turnaround"--when we turned back for gas and encountered the HP supercell head-on.
		Added some cloud pictures to atlas: pyrocumulus, Cumulus congestus with virga.
	www.chasenj.com /Changes.html (132 words)

	Pyrocumulus - FM Forums (Site not responding. Last check: 2007-11-01)
		To go back to the main forum, click here.
		Intense forest fires form their own micro weather systems and here pyrocumulus clouds tower over two separate fires in British Columbia.
		A spotter plane or "bird dog" can be seen in front of the cloud bank on the right as it guides water bombers over the fire.
	www.fredmiranda.com /forum/topic2/49303 (184 words)

	Mesoscale&Microscale Meteorology Division, NCAR
		Large-scale initialization of atmospheric environment using RUC, MM5, ETA, etc.
		Models formation of clouds, rain, and hail in "pyrocumulus" clouds over fires
		The fire component of the model calculates the fire spread rate in different fuel, wind, and slope conditions, heat release into the atmosphere, and the transition of ground fires into crown fires (ones that race through the canopies of trees)
	www.mmm.ucar.edu /research/wildfire/afm/afmdescription.html (318 words)

	RMRS Posters 2
		NEXUS: A Crown Fire Hazard Assessment System - Nexus is an EXCEL spreadsheet that links surface and crown fire prediction models.
		Smoke Emissions From Biomass Burning in the Eastern U.S. calculates plume rise form large fires, including pyrocumulus and cumulus growth without fire.
		Research Applications for Firefighter Safety - Articles and information discussing recent fire research and ts application to firefighter safety.
	www.firelab.org /old/posters/rmrs2.htm (109 words)

	USATODAY.com - The Weather Guys: Archives
		Posted by Bob Swanson on September 12, 2006 in Clouds, Pop culture, Precipitation, Rain, Technology
		The photo (left) that we published with today's drought story shows a billowing "pyrocumulus" cloud, which is a type of cumulus cloud that often develops above forest fires.
		Forest fires can actually create their own atmospheric instablity by heating air near the surface.
	blogs.usatoday.com /weather/clouds (2856 words)

	Kenneth Trax - Top Ten Cloud Formations #6 Pyrocumulus - The Official Home of Kenneth Trax's mp3 blog
		Kenneth Trax - Top Ten Cloud Formations #6 Pyrocumulus - The Official Home of Kenneth Trax's mp3 blog
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	www.apfrod.com /ken/2005/03/13/top_ten_cloud_formations_6_pyrocumulus (136 words)

	Solar Terrestrial Dispatch - Image Gallery (Site not responding. Last check: 2007-11-01)
		Submitted by: tony travaglia at Tue Mar 1 23:41:01 2005 UTC
		This burnoff caused a stunning pyrocumulus the best example I have witnessed, a very hazy bright day and this smoke column making its way up through the air Canon 300D zoom lens at 100 1/500 sec @f5.6 ISO 100
		Submitted by: Tony Travaglia at Mon Sep 18 10:18:01 2006 UTC
	www.spacew.com /gallery/image004456.html (1179 words)

	Archived Images
		pyrocumulus head (submitted by tony travaglia Tue Mar 1 23:41:01 2005 UTC)
		Pyrocumulus (submitted by tony travaglia Tue Mar 1 23:41:01 2005 UTC)
		The Face of Odin (submitted by Dennis Anderson Tue Mar 1 20:15:01 2005 UTC)
	www.spacew.com /gallery/oldimages.html (13535 words)

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