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  • 17 February - 18 March 2003 - Ice Forming on Lake Superior
    as bluish white with snow ice having a pink red enhancement Larger versions 1 3 MB file size of the 17 February 07 March and 22 March Terra MODIS composite images are also available on the SSEC MODIS Image Gallery 17 February Terra MODIS composite image Channels 01 02 03 Terra MODIS composite image Channels 01 06 Fade between 17 February Terra MODIS composite images 19 February 2003 Terra MODIS composite image Channels 01 02 03 Terra MODIS composite image Channels 01 06 Fade between 19 February Terra MODIS composite images 23 February 2003 Terra MODIS composite image Channels 01 02 03 Terra MODIS composite image Channels 01 06 Fade between 23 February Terra MODIS composite images 26 February 2003 Terra MODIS composite image Channels 01 02 03 Terra MODIS composite image Channels 01 06 Fade between 26 February Terra MODIS composite images The extent of the lake ice began to increase again after a few days of very cold temperatures overnight minimum temperatures on 25 February included 36 F at Tower MN 34 F at Upton WI and 29 F at Marquette MI 28 February 2003 Terra MODIS composite image Channels 01 02 03 Terra MODIS composite image Channels 01 06 Fade between 28 February Terra MODIS composite images 250 meter resolution MODIS composite images are also available from 28 February centered near Bayfield Wisconsin and Houghton Michigan 05 March 2003 Terra MODIS composite image Channels 01 02 03 Terra MODIS composite image Channels 01 06 Fade between 05 March Terra MODIS composite images The ice continued to thicken during the record cold temperatures experienced in early March on 03 March it was 42 F at Ewen MI and Marquette MI dropped to 30 F setting a new record low for the month of March Minimum temperatures on 05

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/030217/030217.html (2012-11-14)
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  • 10 February 2003 - Ship Tracks Over the Pacific Ocean
    nuclei CCN creating streaks consisting of smaller cloud droplets within the pre existing cloud deck The resuling changes in the emissivity of the marine layer stratocumulus are easily detected using the 3 9 micrometer shortwave IR channel data The ship tracks exhibit a colder 3 9 micrometer InfraRed IR brightness temperature at night above darker blue enhancement while during daylight hours these features exhibit a warmer brightness temperature below darker

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/030210/030210.html (2012-11-14)
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  • 04 February 2003 - Mountain Wave Turbulence Over the Mid-Atlantic States
    2003 Mountain waves are often a signature of atmospheric turbulence and in this case there were several pilot reports of moderate to severe turbulence over that particular region A 3 panel comparison of re mapped water vapor channel data from GOES 08 GOES 12 and Terra MODIS below left shows that the mountain wave signature is better resolved using GOES 12 and MODIS The 6 5 micrometer GOES 12 water vapor channel has improved spatial resolution 4 km and is a spectrally wider channel which contributes to better mountain wave detection compared to the 6 7 micrometer GOES 08 water vapor channel 8 km resolution The superior spatial resolution 1 km of the MODIS data offers an additional advantage in detecting the full areal coverage of the mountain waves in this case Water vapor channel weighting functions calculated for GOES 08 and GOES 12 below right using the morning rawinsonde data from Nashville TN show that the GOES 12 water vapor channel should sense a brightness temperature about 1 4 K warmer than GOES 08 This is in agreement with the observed satellite brightness temperatures averaged over a 30x30 pixel region along the Virginia North Carolina border the red squares

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/030204/030204.html (2012-11-14)
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  • 30 December 2002 - TROWAL Over Southern Canada
    over western Ontario and eastern Manitoba part of an occluded cyclone moving across that area on 30 December 2002 The low sun angle during the winter season over Canada allows better illumination of the edges of this middle level cloud feature which identifies the moist TROWAL air stream as it was ascending northward Note that one location in western Ontario reports a brief period of sleet and 2 other stations report freezing drizzle as the cloud wedge and the associated layer of warm air aloft moves overhead The location of the axis of the TROWAL is verified using equivialent potential temperature theta e contours from the 80 km Rapid Update Cycle RUC model above right Upward motion along the strongly sloping isentropic surfaces of the TROWAL below can result in areas of enhanced precipitation in an otherwise benign looking occluded system Brief periods of moderate snow were reported over parts of Manitoba near the northwestern edge of the TROWAL axis TROWAL schematic References Martin J E 1998a The structure and evolution of a continental winter cyclone Part I Frontal structure and the occlusion process Mon Wea Rev Vol 126 303 328 Martin J E 1998b The structure and evolution of

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/021230/021230.html (2012-11-14)
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  • 21 June to 08 July 2002 - Smoke From Canadian Wildfires
    northern Saskatchewan and later across central Quebec during late June and early July 2002 produced large amounts of smoke with some of this smoke being transported southward across parts of the eastern US Daily sequences of NASA Terra MODIS composite images above show the location and areal coverage of the smoke during this period Large 1 2 MB file size 250 meter resolution Terra MODIS composite images are available which show the wildfires over Saskatchewan on 22 June 26 June and 27 June and also over Quebec on 08 July 06 July Quebec GOES 08 visible image Java animation 07 July Eastern North America GOES 08 visible image Java animation A large cluster of at least 85 fires was initiated by lightning across parts of central Quebec on 02 03 July During the following few days strong winds across the region helped the fires to grow rapidly 05 July 06 July Wildfire ABBA product animations producing several large smoke plumes Much of this smoke was advected southward across the northeastern US during 06 08 July as a cyclone intensified over the Canadian Maritimes 850 hPa 700 hPa 500 hPa wind streamlines GOES 08 visible imagery above shows the rapid development

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/020628/020628.html (2012-11-14)
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  • 23 June 2002 - Arizona Wildfires
    as of 23 June fire complexes in Arizona Thick smoke had settled into the valleys overnight and organized smoke plumes redeveloped as southwesterly winds increased during the daytime hours The rapid intensification of the Rodeo Chediski complex on June 20 2002 was one of the most extreme examples ever documented with the GOES Wildfire Automated Biomass Burning Algorithm WF ABBA as shown in this animation A multispectral image from the QuickBird satellite shows the fire two days earlier on 21 June A 3 channel composite image using 500 meter resolution NASA Terra MODIS data above right reveals the two very large burn scars dark enhancement with active fire hot spots red enhancement around the periphery of the burn scars and thick smoke light purple enhancement drifting northeastward Areas with significant vegetation consisting mainly of pine and juniper trees are enhanced green These 2 large fires exhibited extreme behavior due to high winds on this particular day and began to merge to the west of Show Low in southern Navajo county A MODIS image composite using 250 meter resolution data shows the burn scars in greater detail Additional MODIS 250 meter composite images can be found on the SSEC MODIS Image

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/020623/020623.html (2012-11-14)
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  • 09 June 2002 - Western US Wildfires
    The WF ABBA modified alphablended imagery for GOES 8 do not see the smoke as well due to the viewing angle and the age of the satellite the contrast against the surface of the Great Plains is low The loop above shows the movement of the smoke plume during the afternoon of June 10 2002 NOAA s GOES 8 and GOES 10 and the MODIS instrument on NASA s Terra spacecraft all imaged the Hayman Fire in the 3 9 micron band at about 4 45 UTC on June 10 2002 Blue represents the coldest cloud tops reds show the warmest surfaces with brightness temperatures of 330K and above GOES 10 can only detect up to about 320K and white to black represents progressively hotter temperatures in between MODIS s 1 km per pixel resolution shows the shape of the fire better than the GOES which are at 4 km per pixel resolution but all three satellites obtained similar imagery and observed similar temperatures The GOES satellites do well in resolving the shape of the fire and have the added advantage of being capable of monitoring the fires 24 hours a day whereas MODIS images a given location twice a

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/020609/020609.html (2012-11-14)
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  • 06 June 2002 - Catalina Eddy Off Southern California
    enhanced pixels that was burning in the Los Padres National Forest The visible channel above right reveals the formation of mesoscale vortices along the northwestern edge of the marine stratus as well as the southwesterly drift of smoke aloft from the aforementioned wildfire The onshore flow associated with the Catalina Eddy was acting to slow the burnoff of fog and stratus along the immediate coastal region of southern California a

    Original URL path: http://cimss.ssec.wisc.edu/goes/misc/020606/020606.html (2012-11-14)
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