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  • 09 « November « 2012 « CIMSS Satellite Blog
    9th 2012 MODIS Sea Surface Temperature SST product with overlay of RTG SST High Resolution model SST field An AWIPS image of the MODIS Sea Surface Temperature SST product on 09 November 2012 with an overlay of SST contours from the RTG SST High Resolution model valid about 6 hours later above showed the residual impact of Hurricane Sandy on the axis of the Gulf Stream almost 2 weeks after Sandy moved through that area There were large eddy perturbations seen in the axis of the Gulf Stream and MODIS SST values of 80º F or higher darker red color enhancement that were not captured by the model analysis Posted in General interpretation MODIS No Comments 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

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/date/2012/11/09 (2012-11-14)
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  • 10 « November « 2012 « CIMSS Satellite Blog
    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 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 Weather Testbed The Wide World of SPoRT UMBC U S Air Quality The Smog Blog US Severe Weather Blog VIIRS Imagery and Visualization Team Blog VISIT Meteorological Interpretation Weather Channel Blogs Weather Underground Blogs WGN Weather Center Blog Satellite imagery sources CIMSS GOES Derived Product Imagery CIMSS Tropical

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/date/2012/11/10 (2012-11-14)
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  • 11 « November « 2012 « CIMSS Satellite Blog
    cold arctic air was flowing southeastward across the still 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 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 Weather Testbed The

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/date/2012/11/11 (2012-11-14)
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  • Antarctic « CIMSS Satellite Blog
    The Antarctic Sun Posted in Antarctic AVHRR Other Satellites POES Red Green Blue RGB images 2 Comments Earth Day 2011 April 22nd 2011 Global montage of geostationary satellite images click to play animation The spinning globe satellite image montage above click image to play animation showed the cloud formations around the planet on Earth Day 22 April 2011 This product is created by combining data from 5 of the currently operational geostationary orbiting meteorological satellites GOES East at 75º West longitude GOES West at 135º West longitude Meteosat at 0º longitude Meteosat at 63º East longitude and MTSAT at 145º East longitude polar orbiting satellites and a topographic background map of the Earth The spinning globe product is created every 3 hours and is available for either the latest time period or an animation covering the last 3 weeks MODIS IR image atmospheric motion vectors over the Arctic region Polar orbiting satellites such as the NASA Terra and Aqua platforms also provide us with valuable information over the polar regions of the Earth which are not sampled well by geostationary satellites due to the very large viewing angles Cloud tracked winds or atmospheric motion vectors can be calculated by comparing the location of features on successive images examples of Terra and Aqua MODIS winds from 22 April 2011 over the Arctic region above and the Antarctic region below provide valuable input into numerical weather prediction models MODIS IR image atmospheric motion vectors over the Antarctic region These are just a few examples of the diverse array of real time satellite data and products that are available from the Space Science and Engineering Center at the University of Wisconsin Madison every day Posted in Antarctic Arctic General interpretation GOES 11 GOES 13 Meteosat MODIS MTSAT POES No Comments Collapse of the Wilkins Ice Shelf March 10th 2008 According to the National Snow and Ice Data Center a large portion of the Wilkins Ice Shelf in the Antarctic map began to collapse during late February and early March 2008 A Terra MODIS visible image above courtesy of Shelley Knuth SSEC Antarctic Meteorological Research Center shows the extent of ice shelf disintegration on 10 March 2008 The latest real time IR satellite composite and Antarctic synoptic analysis chart from the SSEC AMRC is shown below Posted in Antarctic General interpretation 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 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

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/antarctic (2012-11-14)
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  • Arctic « CIMSS Satellite Blog
    FORECAST DISCUSSION NATIONAL WEATHER SERVICE FAIRBANKS AK 501 AM AKDT MON OCT 15 2012 DISCUSSION THE GFS AND NAM COMPUTER WEATHER FORECAST MODELS ARE IN GOOD AGREEMENT THROUGH 4 AM WEDNESDAY A LARGE AND LONG LIVED LOW PRESSURE SYSTEM NOW ABOUT 600 MILES NORTHWEST OF BARROW IS GRADUALLY WEAKENING AND DRIFTING SLOWLY TO THE NORTHWEST THE WEATHER AT SEA IN THE CHUKCHI AND ALONG THE ALASKAN CHUKCHI SEA COAST IS THE MOST IMPORTANT ASPECT OF THIS MORNINGS FORECASTS COLD AIR HAS BEEN STREAMING DOWN FROM THE FAR NORTHWESTERN CHUKCHI SEA THROUGH BERING STRAIT THE EDGE OF THE ARCTIC ICE PACK IS NOW ABOUT 400 MILES NORTHWEST OF BARROW AND ADVANCING SOUTHWARD 10 TO 15 MILES A DAY THE ABNORMALLY LONG FETCH OVER THE CHUKCHI SEA DOWN TO THE ALASKA ARCTIC COAST WEST OF CAPE HALKETT IS THE MAIN FACTOR IN THE BUILDUP OF ROUGH SEAS THE INCOMING SWELLS AT BARROW HAVE BEEN FROM 4 TO 6 FEET HIGH DUE TO ABNORMALLY FREQUENT WEST WINDS IN THE ALASKAN ARCTIC THIS SUMMER AND FALL THE WIDE BEACH AND SHALLOW WATER OUT FROM SHORE HAVE BEEN MUCH REDUCED AS A RESULT THE INCOMING SWELLS ON THE ALASKAN NORTHERN ARCTIC COAST ARE NOT BREAKING SEVERAL HUNDRED YARDS OFFSHORE AS THEY USUALLY DO INSTEAD THE INBOUND SWELLS ARE NOT BREAKING UNTIL REACHING THE SHORELINE THE RUN UP OF THE BREAKING SURF IS CONSIDERABLY MORE NOW THAN IT WOULD BE UNDER NORMAL SHORELINE CONDITIONS POLAR ORBITING SATELLITE IMAGERY HAS SHOWN EXTENSIVE CONVECTIVE CLOUDS OVER THE CHUKCHI SEA THIS AND THE EARLY MORNING WEATHER BALLOON DATA FROM BARROW KOTZEBUE AND NOME INDICATE AN UNSTABLE AIR MASS THIS FEATURE GIVES A LARGER TRANSFER OF ENERGY FROM THE WIND TO THE SEA THIS HAS BEEN THE CASE FOR SEVERAL DAYS NOW Posted in Arctic Suomi NPP VIIRS No Comments Strong storm entering the Bering Sea September 4th 2012 Suomi NPP VIIRS 0 64 µm visible channel images AWIPS images of Suomi NPP VIIRS 0 64 µm visible channel data above and 11 45 µm IR channel data below showed a close up view of the clouds associated with a strong storm surface analysis that was crossing the Aleutian Islands and entering the Bering Sea on 03 September 04 September 2012 Banded convective elements can be seen along the western edge of the high cloud deck which marked the leading edge of the advancing occluded frontal boundary At the time of the images the winds at Shemya Air Force Base station identifier PASY were gusting to 57 knots 66 mph but during the previous hour the peak winds were 61 knots 70 mph Suomi NPP VIIRS 11 45 µm IR channel images Posted in Arctic Suomi NPP VIIRS 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

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/arctic (2012-11-14)
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  • Aviation « CIMSS Satellite Blog
    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 from the strond winds associated with Hurricane Sandy MODIS true color Red Green Blue RGB image Finally it was observed that there were a number of pilot reports of moderate to severe turbulence near the western periphery of the cloud shield of Sandy where there were also hints of a transvese banding structure Two notable pilot reports are displayed on Suomi NPP VIIRS 11 45 µm IR and MODIS 6 7 µm water vapor channel images below Suomi NPP VIIRS 11 45 µm IR image with pilot report of severe turbulence MODIS 6 7 µm water vapor channel image with pilot report of moderate turbuence Posted in AVHRR Aviation GOES 14 Google Earth MODIS POES Red Green Blue RGB images Suomi NPP Tropical cyclones VIIRS No Comments Saharan dust over South Florida and the adjacent offshore waters July 25th 2012 GOES 13 0 63 µm visible channel images McIDAS images of GOES 13 0 63 µm visible channel data above showed the hazy signature of a dense veil of airborne Saharan dust over South Florida and the adjacent offshore waters of the Gulf of Mexico and the Atlantic Ocean on 25 July 2012 This particular major pulse of Saharan dust began to move westward across the Atlantic Ocean during mid July A closer view using an AWIPS image of Suomi NPP VIIRS 0 64 µm visible channel data below also showed the hazy signature of the dust over the southeastern portion of the satellite scene A pilot reported flight visibility of 4 to 5 statute miles within the dust layer over the Florida Keys Suomi NPP VIIRS 0 64 µm visible channel image Pilot reports A comparison of the VIIRS 0 64 µm visible image with the corresponding VIIRS 11 45 µm IR image below demonstrated that there was no dust signal at that particular IR wavelength due to the fact tht an elevated dust layer is generally transparent to thermal radiation from the land and ocean surfaces below Suomi NPP VIIRS 0 64 µm visible channel 11 45 µm IR channel images The VIIRS Aerosol Optical Thickness product below showed a strong signal yellow to red color enhancement over that region

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/aviation (2012-11-14)
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  • AWIPS II « CIMSS Satellite Blog
    the heating power of the higher sun angle of mid April GOES 0 65 µm visible images displayed using AWIPS II Posted in AWIPS II General interpretation Winter weather No Comments 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 Weather Testbed The Wide World of SPoRT UMBC U S Air Quality The Smog Blog US Severe Weather Blog VIIRS Imagery and Visualization Team Blog VISIT Meteorological Interpretation Weather Channel Blogs Weather Underground Blogs WGN Weather Center Blog Satellite imagery sources CIMSS GOES Derived

    Original URL path: http://cimss.ssec.wisc.edu/goes/blog/archives/category/awips-ii (2012-11-14)
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  • Calibration/Anomalies « CIMSS Satellite Blog
    stopping GOES 14 s eastward drift towards the GOES East station longitude of 75 W GOES 14 will be very near 90 W when the drift stop occurs This link from the Washington Post Capital Weather Gang blog gives additional information See also this memo from NOAA SSD Real time sounder imagery is available here Posted in Calibration Anomalies General interpretation GOES 13 GOES 14 No Comments Increased noise in GOES 13 Imager Channels September 21st 2012 Toggle between GOES 13 6 5 µm and MODIS 6 76 µm imagery at 0740 UTC on 21 September The GOES Imager infrared channels are displaying increasing amounts of small scale noise that is manifest in imagery as herringbone or checkerboard features as shown in the comparison above with a MODIS water vapor imagery The animation below an AWIPS composite of GOES 13 and GOES 15 shows increasing amounts of noise with a peak near 0830 UTC when the loop pauses before the noise relaxes There seems then to be a diurnal component to the noisy behavior GOES 13 GOES 15 6 5 µm imagery click Image for Animation The noise is apparent in the GOES 13 imagery in the loop above but not in the GOES 15 imagery that is displayed on the western side of the north south seam from eastern Washington southward to Baja California GOES 13 and GOES 14 6 5 µm imagery 1045 UTC 21 September 2012 Similarly a comparison of GOES 13 and GOES 14 data over the north central United States shows a clean signal in GOES 14 Compare for example the checkerboard signal over northern Illinois in the GOES 13 imagery to the same region in the GOES 14 imagery GOES 13 3 9 µm imagery 0815 UTC 21 September 2012 The noise is also apparent though more subtle in other channels especially the shortwave Infrared 3 9 µm as evidenced above The herringbone checkboard pattern is present both in the very cold cloud tops of the convection over southern Missouri and in the mid and high level clouds over the central Mississippi Valley The noise in the 3 9 channel is also apparent in the heritage fog product that simply takes the difference between the 10 7 µm and 3 9 µm brightness temperatures The noise is not apparent on this day in the GOES R IFR Probability Product that fuses the brightness temperature difference field with model data GOES 13 6 5 µm imagery click Image for Animation An animation of GOES 13 Water Vapor imagery at 0815 UTC from 7 September 2012 through 21 September 2012 shows that the noise is a recent but now persistent issue with the Imager It may have started around September 12 GOES 13 6 5 µm imagery from Imager top and Sounder bottom 0845 UTC 21 September 2012 The noise is present in both Imager and Sounder data This suggests that the root cause may be with the satellite platform itself not necessarily with the instruments

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