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  • Mesoscale lake-effect snow bands: the Great Salt Lake, and the Missouri River « CIMSS Satellite Blog
    unfrozen waters of the Missouri River whose flow is controlled by several dams that create large reservoirs such as Lake Oahe and Lake Sharpe Even though the fetch of the cold air across the water was relatively small there were still a number of lake effect or river effect cloud bands seen on GOES 13 0 63 µm visible channel images below click image to play animation in particular a long and well defined cloud band extending downwind of the large horseshoe shaped oxbow bend in Lake Sharpe Such lake effect clouds were also described in 2009 and 2008 on this blog GOES 13 0 63 µm visible channel images click image to play animation A comparison of AWIPS images of MODIS 0 65 µm visible channel and a false color Red Green Blue RGB composite below demonstrated the value of using RGB imagery to help discriminate between snow cover enhanced in darker shades of red and supercooled water droplet clouds which appear as varying shades of white MODIS 0 64 µm visible channel and false color Red Green Blue RGB images A closer view using 250 meter resolution MODIS true color and false color RGB images from the SSEC MODIS Today site below showed even greater detail in the structure of these cloud bands downwind of the Missouri River in South Dakota In this RGB image snow cover appeared as shades of cyan MODIS true color and false color Red Green Blue RGB images Posted in AVHRR GOES 13 GOES 15 MODIS POES Red Green Blue RGB images Winter weather No Comments Leave a Reply Click here to cancel reply Name required Mail will not be published required Website Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS V Meteosat MODIS MTSAT Other Satellites POES Red Green Blue RGB images Satellite winds Severe convection Suomi NPP Synthetic satellite imagery Training Tropical cyclones VIIRS Volcanic activity Web Map Server What the heck is this Winter weather Other blogs of interest AccuWeather Blogs CIMSS GOES Gallery CIMSS TPARC Support CIRA GOES R Proving Ground Blog EUMETSAT Image Gallery Geographic Information Network of Alaska GOES R and JPSS National Centers Perspective GOES R Fog Product Examples GOES R Hazardous Weather Testbed METSUL blog NOAA NESDIS Operational Significant Event Imagery NSSTC Collaborative Weather Blog PREDICT Field Experiment Blog The GOES R

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/11835 (2012-11-14)
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  • Lake-effect cloud plumes in the Dakotas « CIMSS Satellite Blog
    images A closer view using 250 meter resolution MODIS true color and false color images from the SSEC MODIS Today site shows finer details of the lake effect cloud plumes over North Dakota above and South Dakota below On these false color images the background snow cover appears as varying shades of cyan MODIS 250 meter resolution true color and false color images Similar lake effect cloud plumes were seen on the previous day 08 December 2009 streaming southward from Fort Peck Lake in northeastern Montana Posted in MODIS Red Green Blue RGB images Winter weather Comments Off Comments are closed Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS V Meteosat MODIS MTSAT Other Satellites POES Red Green Blue RGB images Satellite winds Severe convection Suomi NPP Synthetic satellite imagery Training Tropical cyclones VIIRS Volcanic activity Web Map Server What the heck is this Winter weather Other blogs of interest AccuWeather Blogs CIMSS GOES Gallery CIMSS TPARC Support CIRA GOES R Proving Ground Blog EUMETSAT Image Gallery Geographic Information Network of Alaska GOES R and JPSS National Centers Perspective GOES R Fog Product Examples GOES R Hazardous

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/4079 (2012-11-14)
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  • “Lake-effect clouds” in Montana and North Dakota « CIMSS Satellite Blog
    beginning to stream southeastward off the unfrozen lakes at that time these supercooled water droplet clouds exhibited a brighter white appearance on the false color images in contrast to the cyan snow covered ground MODIS true color and false color images Fort Peck Lake Montana MODIS true color and false color images Lake Sakakawea North Dakota Posted in Fog detection GOES 12 MODIS Red Green Blue RGB images Winter weather Comments Off Comments are closed Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 Categories Air quality Antarctic Arctic AVHRR Aviation AWIPS II Calibration Anomalies Cloud Top Cooling Convective Initiation Fire detection Fog detection General interpretation GOES sounder GOES 10 GOES 11 GOES 12 GOES 13 GOES 14 GOES 15 GOES R Google Earth Heavy rain flooding Historical Hydrology Lightning Marine weather McIDAS V Meteosat MODIS MTSAT Other Satellites POES Red Green Blue RGB images Satellite winds Severe convection Suomi NPP Synthetic satellite imagery Training Tropical cyclones VIIRS Volcanic activity Web Map Server What the heck is this Winter weather Other blogs of interest AccuWeather Blogs CIMSS GOES Gallery CIMSS TPARC Support CIRA GOES R Proving Ground Blog EUMETSAT Image Gallery Geographic Information Network of Alaska GOES R and JPSS National Centers Perspective GOES R Fog Product Examples GOES R Hazardous Weather Testbed METSUL blog NOAA NESDIS Operational Significant Event Imagery NSSTC Collaborative Weather Blog PREDICT Field Experiment Blog The GOES R Proving Ground at the Aviation

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/1531 (2012-11-14)
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  • AVHRR « CIMSS Satellite Blog
    above and also on MODIS 0 64 µm visible channel and 11 0 µm IR channel images at 21 00 UTC below This storm was producing widespread storm force winds with some gusts to hurricane force over the western Gulf of Alaska MODIS 0 64 µm visible channel and 11 0 µm IR channel images Posted in AVHRR MODIS POES No Comments In spite of a brief downgrade Sandy maintains hurricane intensity October 27th 2012 POES AVHRR 12 0 µm MODIS 11 0 µm and Suomi NPP VIIRS 11 45 µm IR images During the overnight hours after midnight on 27 October 2012 Sandy was briefly downgraded to a Tropical Storm by the National Hurricane Center discussion archive A sequence of AWIPS images of 1 km resolution POES AVHRR 12 0 µm MODIS 11 0 µm and Suomi NPP VIIRS 11 45 µm IR images above showed persistent pockets of deep convection north and west of the center of the tropical cyclone Since the Moon was in the waxing gibbous phase at 97 of full moon phase it provided ample illumination for a night time visible image using the Suomi NPP Day Night Band DNB at 06 43 UTC or 2 43 AM local time below A few overshooting top features could be seen in the DNB image which corresponded with the areas of colder cloud top IR brightness temperatures seen on the VIIRS 11 45 µm IR image at that same time Suomi NPP VIIRS 0 7 µm Day Night Band and 11 45 µm IR channel images After sunrise GOES 14 1 minute interval SRSOR visible channel data below click image to play HD format QuickTime movie showed great details of the deep convective development north and west of the partially exposed low level circulation center GOES 14 0 63 µm visible channel image click image to play QuickTime movie Additional GOES 14 SRSOR images during the afternoon hours below cick image to play HD format QuickTime movie continued to show the development of convective bursts just north of the partialy exposed low level circulation center GOES 14 0 63 µm visible channel images click image to play QuickTime movie A larger scale view using MODIS 0 65 µm visible 11 0 µm IR and 6 7 µm water vapor channel images below showed the very large size of the cloud field associated with Sandy which had re gained hurricane intensity by this time Also evident on the MODIS water vapor channel image was the large intrusion of dry air wrapping around the southern and eastern quadrants of Sandy hinting at the early stages of a transition from a tropical system to an extratropical system MODIS 0 65 µm visible 11 0 µm IR and 6 7 µm water vapor channel images An Aqua MODIS true color Red Green Blue RGB image from the SSEC MODIS Today site below revealed large areas of increased turbidity in the waters just west of Florida and the Bahamas due to mixing

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/avhrr (2012-11-14)
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  • GOES-13 « CIMSS Satellite Blog
    RGB images Posted in AVHRR GOES 13 GOES 15 MODIS POES Red Green Blue RGB images Winter weather No Comments GOES 14 is no longer sending images November 3rd 2012 GOES 14 0 62 µm Visible Image GOES 14 came out of storage in mid August for an annual north south maneuver and for GOES R Testing While in normal mode GOES 13 suffered an anomaly and GOES 14 replaced GOES 13 temporarily as GOES East before GOES 13 returned to service After operating in SRSO R mode for Hurricane Sandy GOES 14 was switched off after the 1845 UTC image on 1 November 2012 above It will remain in stand by mode until recalled because of anomalies with GOES West GOES 15 or GOES East GOES 13 For more information on the future plans for GOES 14 click here Posted in Calibration Anomalies GOES 13 GOES 14 No Comments Hurricane Sandy Life Cycle from GOES 13 and GOES 14 October 30th 2012 GOES 13 10 7 µm IR imagery Click image to play animation GOES 13 GOES East in geostationary orbit at the Equator and 75 W longitude was well positioned to capture the entire lifecycle of Hurricane Sandy An animation of 10 7 µm IR images is shown above at 3 hourly time steps from incipient tropical wave to a hurricane hitting Jamaica to a system with an almost subtropical storm appearance off Florida Note the relentless expansion of the system as it moves towards the northeast part of the US Another view of a portion of the lifecyle of Sandy is shown below with GOES 13 6 5 µm water vapor channel images at 1 hour intervals during the 24 October 30 October period This water vapor animation is also available as a QuickTime movie GOES 13 6 5 µm water vapor channel images click image to play animation 31 October Update GOES West GOES East composite IR images click image to play QuickTime movie In addition to the GOES 13 perspective here are 2 other examples that show the life cycle of Hurricane Sandy a GOES West GOES East composite of IR images covering the period 24 31 October above click image to play QuickTime movie and GOES 14 Super Rapid Scan Operations SRSO 1 minute interval daytime visible images during the 25 31 October period below click image to play YouTube video For the best YouTube viewing experience click on the Change quality icon immediately below the images and select 1080p HD as the resolution then put the video into Full Screen mode The source QuickTime video of GOES 14 SRSO visible imagery is here GOES 14 Super Rapid Scan visible images click image to play YouTube video Another way to visualize the life cycle of Sandy is to examine a Lagrangian animation where the GOES 13 10 7 µm IR images remain centered over the core of the storm below click image to play animation also available as a QuickTime movie or on Youtube

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/goes-13 (2012-11-14)
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  • GOES-15 « CIMSS Satellite Blog
    images below click image to play animation in particular a long and well defined cloud band extending downwind of the large horseshoe shaped oxbow bend in Lake Sharpe Such lake effect clouds were also described in 2009 and 2008 on this blog GOES 13 0 63 µm visible channel images click image to play animation A comparison of AWIPS images of MODIS 0 65 µm visible channel and a false color Red Green Blue RGB composite below demonstrated the value of using RGB imagery to help discriminate between snow cover enhanced in darker shades of red and supercooled water droplet clouds which appear as varying shades of white MODIS 0 64 µm visible channel and false color Red Green Blue RGB images A closer view using 250 meter resolution MODIS true color and false color RGB images from the SSEC MODIS Today site below showed even greater detail in the structure of these cloud bands downwind of the Missouri River in South Dakota In this RGB image snow cover appeared as shades of cyan MODIS true color and false color Red Green Blue RGB images Posted in AVHRR GOES 13 GOES 15 MODIS POES Red Green Blue RGB images Winter weather No Comments Mountain waves downwind of the Sierra Nevada Range in California November 8th 2012 GOES 15 6 5 µm water vapor channel images click image to play animation McIDAS images of 4 km resolution GOES 15 6 5 µm water vapor channel data above click image to play animation showed the development of a series of well defined mountain waves immediately downwind of the high terrain of the Sierra Nevada mountains in California on 08 November 2012 This mountain wave signature indicates the potential for turbulence and there were a few pilot reports of light to moderate turbulence in that region between the altitudes of 25 000 and 38 000 feet above ground level 17 02 UTC 01 00 UTC Occasionally the crests of these mountain waves are marked by rotor clouds but they also frequently occur in clear air which underscores the importance of using water vapor imagery for their detection AWIPS images of 1 km resolution MODIS 6 7 µm water vapor channel 0 65 µm visible channel and 11 0 µm IR channel data at 20 32 UTC below showed that there were no cloud features present with some of the mountain waves or with the entire portion of any given mountain wave MODIS 6 5 µm water vapor channel 6 5 µm visible channel and 11 0 µm IR channel images Posted in Aviation GOES 15 MODIS No Comments Older Entries Webmaster Follow us on Search for Pages About this site CIMSS Satellite Proving Ground Contact us Mobile users POES AVHRR in AWIPS SatePedia Suomi NPP JPSS Proving Ground VISIT SHyMet Training Topics November 2012 M T W T F S S Oct 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/goes-15 (2012-11-14)
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  • MODIS « CIMSS Satellite Blog
    MODIS POES Red Green Blue RGB images Winter weather No Comments Blowing dust in northern Mexico southwestern Texas and southeastern New Mexico November 10th 2012 MODIS 11 12 µm IR brightnes temperature difference with surface METAR reports and frontal analysis Strong southwesterly winds gusting as high as 86 mph in New Mexico and 73 mph in Texas ahead of an advancing cold front were causing dense plumes of blowing dust that restricted surface visibility to 0 5 mile at El Paso Texas station identifier KELP on 10 November 2012 An AWIPS image of the 1 km resolution MODIS 11 12 µm IR brightness temperature difference BTD product above showed the areal coverage of the blowing dust cyan to yellow color enhancement at 20 17 UTC 3 17 PM local time The blowing dust plumes could also be seen on a 250 meter resolution MODIS true color Red Green Blue RGB image from the SSEC MODIS Today site below MODIS true color Red Green Blue RGB image displayed using Google Earth MODIS 0 65 µm visible channel and 11 0 µm IR channel images AWIPS comparisons of 1 km resolution MODIS above and Suomi NPP VIIRS below visible channel and IR channel images revealed that the airborne dust exhibited a cooler signature lighter gray enhancement on the IR imagery Suomi NPP VIIRS 0 64 µm visible channel and 11 45 µm IR channel images Posted in Air quality Google Earth MODIS Suomi NPP VIIRS No Comments Satellite views of snow cover produced by a strong early season Nor easter November 9th 2012 Suomi NPP VIIRS 0 64 µm visible channel and false color Red Green Blue RGB images The first Nor easter storm of the 2012 2013 winter season as seen on 07 November 2012 MODIS images produced snowfall amounts as high as 13 inches in parts of New Jersey and Connecticut HPC storm summary After the clouds had cleared in the wake of the departing system the areal extent of the remaining snow on the ground which ranged from 1 6 inches at some locations across New Jersey New York Connecticut and Massachusetts was shown in an AWIPS comparison of 375 meter resolution re projected onto a 1 km AWIPS grid Suomi NPP VIIRS 0 64 µm visible channel and false color Red Green Blue RGB images at 17 25 UTC 12 25 PM local time on 09 November 2012 above In the false color VIIRS RGB image snow on the ground was enhanced in shades of pink Note to National Weather Service forecast offices as a part of our participation in GOES R Proving Ground activities CIMSS is able to provide a limited set of VIIRS imagery for display in your local AWIPS via LDM feed Additional detail could be seen in 250 meter resolution MODIS true color and false color RGB images at 18 02 UTC 1 08 PM local time from the SSEC MODIS Today site below In the MODIS false color RGB image the snow cover

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/modis (2012-11-14)
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  • POES « CIMSS Satellite Blog
    Heat Content products from the CIMSS Tropical Cyclones site below indicated that later in the morning around 12 UTC the center of Sandy was crossing the axis of the Gulf Stream Sea Surface Temperature and Ocean Heat Content products GOES 13 10 7 µm imagery Click image to play animation GOES 13 was placed into in Rapid Scan Operations RSO mode to monitor Sandy and 10 7 µm IR images above click image to play animation showed several noteworthy aspects to the storm The sheer size of the storm is quite evident The cirrus shield of the storm was pushing west through lower Michigan into Wisconsin during the 16 hour time period of the animation The IR images also showed the pulsing development of convection near the center of the storm and the northwest motion of the entire system The cyclonic circulation in the low level wind field over the ocean and the anticyclonic circulation of the higher level clouds over the eastern United States was also apparent A morning overpass of the Metop A satellite provided Advanced Scatterometer ASCAT winds around Sandy below there were a number of wind vectors having speeds of 50 knots or higher within the area of red wind vectors in the southern quadrant of the storm POES AVHRR 0 86 µm visible channel image ASCAT surface scatterometer winds Suomi NP VIIRS 11 45 µm MODIS 11 0 µm and POES AVHRR 12 0 µm IR images click image to play animation A sequence of 1 km resolution Suomi NPP VIIRS 11 45 µm MODIS 11 0 µm and POES AVHRR 12 0 µm IR images above click image to play animation showed the structure of Hurricane Sandy at various times as it curved northwestward toward the US East Coast Such an animation also serves to underscore the potential value of having access to high spatial resolution polar orbiting satellite imagery in AWIPS in the event of an outage of the GOES East satellite such as the one that occurred on 23 September 2012 CIMSS has the unique capability to provide such imagery from VIIRS MODIS and AVHRR to National Weather Service forecast offices GOES 14 0 63 µm visible channel images click image to play HD format QuickTime movie During the daylight hours GOES 14 Super Rapid Scan 0 63 µm visible channel images at 1 minute intervals above click image to play HD format QuickTime movie showed great detail in the complex temporal changes of the structure of the various cloud features associated with Sandy Note that GOES 14 remained in SRSO R mode to monitor Sandy and real time 1 minute imagery is available here In addition a number of GOES 14 SRSO R animations are available on the SSEC YouTube Channel POES AVHRR 12 0 µm IR image with surface pressure analysis Sandy made landfall as the storm was transitioning from a hurricane to a very intense post tropical cyclone near Atlantic City New Jersey around 00 00 UTC on 30

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/poes (2012-11-14)
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