The NESDIS/StAR VIIRS Imagery and Visualization Team is responsible for the checkout of Visible Infrared Imaging Radiometer Suite (VIIRS) EDR imagery from the NASA/NOAA Joint Polar Satellite System (JPSS) spacecraft, the Suomi NPP (National Polar-orbiting Partnership).

DateEvent
28 October 2011 @ 0948 UTCNPP launch
21 November 2011 @ 1604 UTCFirst visible/reflective images
19 January 2012 @ 0620 UTCFirst infrared/thermal images
25 January 2012NPP renamed Suomi NPP
24 October 2012EDR Imagery to Beta stage
4 September 2013EDR Imagery to Provisional stage
23 April 2014EDR Imagery to Validation 3 stage

The VIIRS EDR Imagery Team meets regularly on the first Tuesday of each month at 11 am Eastern, 10 am Central, 9 am Mountain, and 8 am Pacific time. Contact Don Hillger at Don.Hillger@noaa.gov, if you want to be added to the meeting announcement and agenda mailing list.

For a roster of VIIRS EDR Imagery Team members, see JPSS_Imagery_and_Visualization_Team.xlsx.

For a list of VIIRS bands and band information, see VIIRS_bands_and_bandwidths.pdf.

For a spreadsheet of VIIRS EDR maturity levels, see EDR_Imagery_maturity_levels.xlsx.

For a Beginners Guide to VIIRS Imagery Data, see Beginner_Guide_to_VIIRS_Imagery_Data.pdf. (~1 MB) (Presentation courtesy of C. Seaman, CIRA]

For a VIIRS Imagery EDR User's Guide, see VIIRS_Imagery_EDR_Users_Guide.pdf. (~2.5 MB) (Courtesy of C. Seaman, CIRA]

WebsiteURL
CIRA's Suomi NPP Bloghttp://rammb.cira.colostate.edu/projects/npp/blog/
CIRA's Suomi NPP Cal/Valhttp://rammb.cira.colostate.edu/projects/npp/calval/
CIRA's Suomi NPP VIIRS Onlinehttp://rammb.cira.colostate.edu/ramsdis/online/npp_viirs.asp
CIRA's Seeing the Light: VIIRS in the Arctic Bloghttp://rammb.cira.colostate.edu/projects/alaska/blog/
NRL's VIIRS imageryhttp://www.nrlmry.navy.mil/VIIRS.html
CIMSS' Satellite Blog for VIIRShttp://cimss.ssec.wisc.edu/goes/blog/archives/category/viirs
StAR-JPSS ADP (Algorithm and Data Products)http://www.star.nesdis.noaa.gov/jpss/index.php
Atmosphere PEATE ftp (data)ftp://peate.ssec.wisc.edu/allData/ingest/viirs/npp/
NOAA CLASS (data)http://www.class.ncdc.noaa.gov/


Suomi NPP Orbital Passes Reverse Chronology of NPP VIIRS Imagery Significant Events
(Newest information at the top)
Suomi NPP Reference Information/Websites
and VIIRS Imagery Documents


NPP Orbital Passes

The Suomi NPP predicted track is plotted on GOES-13 full-disk 10.7 µm imagery to assist with matching Suomi NPP data with meteorological features of interest. Since the full disk scans occur every 3 hours, only the track within +/- 90 minutes of each scan is plotted. See http://rammb.cira.colostate.edu/templates/loop_directory.asp?data_folder=dev/lindsey/loops/npp_track&image_width=1020&image_height=720&number_of_images_to_display=20

Suomi NPP Orbital Passes, alternative1

Another Suomi NPP orbit predictor is available from SSEC/University of Wisconsin at http://www.ssec.wisc.edu/datacenter/npp/. Starting with that main page, users have a choice of orbit tracks on higher-resolution images over the various continents.

Suomi NPP Orbital Passes, alternative2 (daytime passes only)

John Haynes (a CIRA employee who is helping with our NUCAPS project) wrote a nifty program that produces google earth .kmz files for each day 5 days into the future that plots the NPP track. Go here: http://www.engr.colostate.edu/~jhaynes/projects/npp_orbits/ and either click the date and choose Open With Google Earth, or right click, download the file locally, open google earth separately, and do File--> Open and point to the file.



Reverse Chronology of Suomi NPP VIIRS Imagery Significant Events

The following sections are presented in reverse chronological order, with the newest information at the top. Older information may be outdated or superseded.



Additions to this reverse chronology section will resume when VIIRS Imagery from JPSS-1 is available.



2014 September 02:

VIIRS Imagery for the lava fissure from 01 September 2014 through the 200-year-old Holuhraun lava field. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_Iceland_2014.pptx (~4 MB)



2014 July 30:

VIIRS analysis of the anomalous light source from 24 July 2014 that is a result from the impact of Air Algérie Flight 5017. [Presentation courtesy of Scott Lindstrom and William Straka III, CIMSS]

VIIRS_AirAlgerie_5017.pptx (~3 MB)



2014 July 02:

Slides that summarize the cursory analysis on the cross talk waiver request. [Presentation courtesy of Steven Miller, CIRA]

20140701_DNB_CrossTalk_Miller.pptx (~2 MB)



2014 June 16:

A VIIRS DNB image of Hurricane Christina on 12 June 2014 @ 0827 UTC. [Image courtesy of Dan Lindsey, NOAA/StAR]

viirs_DBN_12jun14_0827Z_cristina.png



2014 June 10:

The attached PowerPoint highlights the VIIRS imagery and NIC ice chart. In late May and early June, only Lake Superior had sea ice along the southern shore and a small patch in the far eastern portion. These VIIRS products were created by the combined efforts of Jeremy, Mindy, Kim, and assisted by Arunas and John via the NexSat web page directory. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

Lake Superior ice-NRL-MRY.pptx (~12 MB)



2014 June 03:

Attached is a ppt on our findings regarding M11 saturation. M11 data collected at night will saturate on a small number of extreme fire and gas flaring events. This also happens for M12. The VIIRS Nightfire algorithm already has a function to exclude saturated and subpixel saturated M12 data from the Planck curve fitting. A similar approach could be implemented for M11. [Presentation courtesy of Chris Elvidge, NGDC]

Elvidge_M11_Saturation_20140603.pptx (<0.5 MB)



2014 May 27:

With the advent of Terrian-Corrected (TC) geolocations, the attached analysis takes a slightly different 'angle' to the analysis, and more rigorous testing will be necessary to examine a couple items, but the preliminary assessment is the same, that the new geolocation appears to be working just fine and this will open new doors to multi-spectral applications involving the DNB. It is an important enabling advance to the data! [Presentation courtesy of Steven Miller, CIRA]

20140523_DNB_Terrain_Correction_Perf_Miller.pptx (~3 MB)



2014 May 26:

As of 22 May 2014 at ~1440 UTC, Terrain-Corrected (TC) geolocations are now available for all I-Band, M-Band, and now DNB data. Attached is a presentation illustrating the improvement of terrain corrected navigation over the non-TC navigation utilizing the Slide Fire as a example case. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_TerrainCorrection.pptx (<1 MB)
VIIRS_McV_TerrainCorrection_Part2.pptx (<1 MB)



2014 May 23:

With the addition of Terrain-Corrected (TC) geolocations for DNB on 22 May 2014 at ~1440 UTC, there are now terrain-corrected versions of Height, Latitude and Longitude ("Height_TC", "Latitude_TC" and "Longitude_TC"). The azimuth and zenith angles appear to be unchanged, with no terrain corrected version. Attached is a look at Hawaii on the edge of the swath using the original Latitude and Longitude vs. using Latitude_TC and Longitude_TC. The terrain correction appears to shift everything correctly. [Presentation courtesy of Curtis Seaman, CIRA]

DNB_Terrain_Correction.pptx (~1.5 MB)



2014 January 21:

VIIRS McIDAS-V Colby CA Fire, 17-21 January 2014. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Colby_CA.pptx (~6.5 MB)



2014 January 16:

VIIRS true color for the Colby fire near Los Angeles, 16 January 2014. [Image courtesy of Jeff Hawkins, NRL, Monterey]

20140116.203331.npp.viirs.True-Color.California.res0p75km_covg100p00.jpg



2014 January 16:

Day/Night Band Case Study, Louisiana Moon Glint—Preliminary Review, 12 January 2014. [Presentation courtesy of Steven Miller, CIRA]

20140112_DNB_MoonGlintImagery_Miller.pptx (~3.5 MB)



2014 January 02:

VIIRS McIDAS-V Casselton ND Train Derailment, 31 December 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Casselton.pptx (<1 MB)



2013 December 18:

Glowing night time lights created by the Pfeiffer fire near Big Sur CA, 16 December 2013. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

Pfeiffer-fire-NLRMRY.pptx (~1 MB)


Shallow Coastal Fog along the Gulf Coast, 18 December 2013. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

Low_cloud_GOMEX.pptx (~5 MB)



2013 December 5:

Interesting artifacts in this DNB reflectance arctic product where multiple items are being stretched to the limit. There are two issues here. First, the readily apparent striping due to differences between detectors; and second, toward the bottom right of the image, the striping becomes discontinuous. [Image courtesy of Jeff Hawkins, and Jeremy Solbrig, NRL, Monterey]

20131122_161547_npp_viirs_Lunar-Reflectance_ChukchiSea_covg76p16.jpg



2013 November 13:

Super Typhoon Haiyan (Yolanda) power outages using VIIRS DNB, 13 November 2013. [Image courtesy of Chris Elvidge, NGDC]

VIIRS_DNB_Haiyan_power_outage_20131113_annotated.jpg



2013 November 09:

Super Typhoon Haiyan (Yolanda) power outages using VIIRS DNB, 9 November 2013. [Image courtesy of Chris Elvidge, NGDC]



2013 September 30:

Suomi NPP VIIRS Imagery: RGB Applications and Development at CIRA. [Presentation courtesy of Curtis Seaman, CIRA]

EUMETSAT_Sat_Conf_2013_Seaman_RGB.pptx (~47 MB)



2013 September 12:

McIDAS-V, visualization and data analysis for Suomi National Polar-orbiting Partnership. [Presentation courtesy of William Straka III, CIMSS]

McIDAS-V, visualization and data analysis for Suomi.pptx (~14 MB)



2013 August 23:

VIIRS NCC pseudo-albedo of Yosemite fire, 23 August 2013. [Presentation courtesy of Tom Kopp, Aerospace Corp.]

Yosemite_fire_2013.ppt (<1 MB)



2013 August 21:

VIIRS DNB stray-light fix. [Presentations courtesy of William Straka III, CIMSS]

VIIRS_Stray_light0821.ppt (~1.5 MB)

VIIRS_Stray_light0821_CSPP.ppt (~3 MB)


VIIRS stray-light correction example, 20 and 21 August 2013. [Images courtesy of Steven Miller, CIRA]

20130820_21_VIIRSDNB_StrayLightCorr_Example_Miller.png



2013 August 13:

Erie, Illinois Gas Pipeline Explosion Observed By VIIRS Nightfire, 13 August 2013. [Presentation courtesy of Chris Elvidge, NGDC]

Erie_IL_20130813.pptx (<1 MB)



2013 July 25:

DNB “Night Vis” Observes Natural Gas Rig Fire, 25 July 2013. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

Hercules-rig-0725-NRLMRY.pptx (~2 MB)



2013 July 24:

Hercules 265 Natural Gas Platform Blaze Detected by VIIRS Nightfire, 24 July 2013. [Presentation courtesy of Chris Elvidge, NGDC]

Hercules_265_blaze_20130724.pptx (<1 MB)


VIIRS imagery of the Hercules 265 Blowout, 24 July 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Hercules_265_blowout.pptx (~1.5 MB)



2013 July 15:

Lac-Megantic, Quebec fire detected by VIIRS Nightfire, 6 July 2013. [Presentation courtesy of Chris Elvidge, NGDC]

Lac-Megantic_Nightfire_20130706.pptx (~1 MB)



2013 July 08:

VIIRS imagery of the Lac-Mégantic, Québec train explosion, 6 July 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Quebec.pptx (~2.5 MB)



2013 June 24:

VIIRS imagery of the Colorado wildfires, 24 June 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Colorado_0622_0623.pptx (~8.5 MB)



2013 June 12:

VIIRS imagery of the Colorado wildfires, 12 June 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Colorado_2013-06-12.pptx (~2 MB)



2013 June 03:

VIIRS imagery of the Powerhouse (CA) fire, 2-3 June 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Powerhouse.pptx (~6.5 MB)



2013 May 07:

VIIRS imagery of Ventura CA fire, 3-4 May 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_McV_Ventura_fire.pptx (~1 MB)



2013 May 05:

New McIDAS-V Features. [Presentation courtesy of Tommy Jasmin, CIMSS/SSEC]

MCV_VIIRS_TEAM_7_MAY_2013.ppt (~6 MB)



2013 April 29:

VIIRS imagery of Mt. Etna volcano, 29 April 2013. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_Etna_0429.pptx (~1.5 MB)



2013 March 04:

VIIRS Dust Enhancement (vs. True Color) for El Paso TX dust case, 20 February 2012. (Best viewed in slideshow mode.) [Presentation courtesy of Steven Miller, CIRA]

2012_02_20_Dust_VIIRS.pptx (~2 MB)



2013 February 07:

VIIRS Day/Night Band (DNB) Stray Light Correction Approach. [Presentation courtesy of Stephanie Weiss, NGAS]

VIIRS_DNB_StrayLight_Correction_NGAS_02072013.pptx (~5 MB)



2013 January 15:

Image projected onto a equidistant azimuthal projection from 28 SVDNB granules. There are lots of features including lightning strikes near Hawaii (south part of image), an aurora up top, and tons of clouds and atmospheric features including a storm front (where the lightning strikes are). [Presentation courtesy of Calvin Liang, NGAS]

lightning.pptx (~1 MB)



2013 January 7:

Greenland ice animation, showing the potential of using the Suomi NPP VIIRS day night band (DNB) digital data for sea ice mapping applications. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

East_Greenland_anim.pptx (~8 MB)



2012 December 18:

Path Forward to Investigate NCC EDR Issues (in particular, stray light correction, third continuation). [Presentation courtesy of Calvin Liang, NGAS]

imagery_tagup_cliang_2012-12-18-NCCStatus.pptx (~3 MB)



2012 December 04:

Path Forward to Investigate NCC EDR Issues (in particular, stray light correction, second continuation). [Presentation courtesy of Calvin Liang, NGAS]

imagery_tagup_cliang_2012-12-04-NCCStatus.ppt (~4 MB)


Lunar reflectance image of Super Typhoon Bopha, for 3 December 2012 @ 1115 UTC. [Image courtesy of Kim Richardson, NRL, Monterey]

20121203_171115_npp_viirs_Lunar-Ref-IR_26WBOPHA_covg100p00.jpg



2012 November 05:

VIIRS Global DNB Product Status. [Presentation courtesy of Chris Elvidge, NGDC]

VIIRS_DNB_global_composite_status_20121105.ppt (~8 MB)



2012 October 9:

Path Forward to Investigate NCC EDR Issues (in particular, stray light correction, continued). [Presentation courtesy of Calvin Liang, NGAS]

imagery_tagup_cliang_2012-10-09-NCCStatus.pptx (~1 MB)



2012 October 5:

Sea of Japan DNB imagery. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

Sea_of_Japan_DNB_OCT2012.pptx (~1.5 MB)


An second look at detector-to-detector striping in VIIRS imagery for several granules on 29 September 2012. [Presentation courtesy of Stan Kidder, CIRA]

A_Second_Look_at_Striping.pptx (~3 MB)



2012 September 28:

Gulf of Alaska low pressure system, for 26 September 2012 @ 2254 UTC, starting the storm season off. [Image courtesy of Jeff Hawkins, NRL, Monterey]

20120926.225453.npp.viirs.True-Color.NorthPacific.covg86p41.jpg



2012 September 25:

Path Forward to Investigate NCC EDR Issues (in particular, stray light correction). [Presentation courtesy of Calvin Liang, NGAS]

imagery_tagup_cliang_2012-09-25-NCCStatus.pptx (<<1 MB)



2012 September 19:

Investigation of fill values in Imagery EDRs. [Presentation courtesy of Curtis Seaman, CIRA]

VIIRS_EDR_Fill_Values.pptx (~21 MB)



2012 September 13:

A color-enhanced infrared image of Typhoon Sanba on 13 September 2012 @ 0456 UTC. [Image courtesy of Dan Lindsey, NOAA/StAR]

13sep12_samba_VIIRS_I-band-5_0456Z.png



2012 September 11:

Investigation of imagery striping and tears, specifically with Hurricane Michael on 6 September 2012 @ 0423 UTC. [Presentation courtesy of Dan Lindsey, NOAA]

striping_and_line-shift.pptx (~1.5 MB)



2012 August 30:

A nighttime DNB image of Hurricane Isaac at landfall on 29 August 2012. [Image courtesy of Dan Lindsey, NOAA/StAR]

29aug12_isaac_0656Z_DNB.png



2012 August 29:

The center portion of a single VIIRS SDR granule of Rayleigh-corrected true-color imagery for 13 August 2012, created from bands M5/M4/M3 at 750 m resolution. The bow-tie deletions at the sides of the granule are filled, and the image is rotated (for ascending orbit granules). This example shows the Strait of Gibralter, with much detail, both spatially and spectrally. Image processing was done with McIDAS-X.

NPP-VIIRS_M03_20120813_131205_RGB.JPG



2012 August 28:

Below is comparison of VIIRS with current GOES: The GOES image is from Imager channel 4 @ 18:45 UTC on 27 August 2012. The VIIRS image is from channel I-05 taken 18:50 UTC, 27 August 2012. Both are longwave IR window channels, however a lot more structure to Isaac can be seen at 375 m resolution than at 4 km! [Images courtesy of Curtis Seaman, CIRA]

Isaac_2012-08-27_1845UTC_GOES-VIIRS-11um.jpg



2012 August 27:

Investigation of NCC EDR Issues: Path Forward. [Presentation courtesy of Steve Mills and Calvin Liang, NGAS]

imagery_tagup_cliang_2012-08-28-PathFoward.pptx (<1 MB)


Below is a true-color image from 27 January 2012 with solar zenith angles approaching the (new) 89 degree limit for imagery. [Image courtesy of Robert Mahoney, Northrop Grumman]

I321Kamchatka_27Jan2012rgb_sqroot_enchanced_fullgran_reduced.jpg

Below are two true-color images of the Puyehue Cordon Caulle volcano in Chili from 14 December 2011. [Images courtesy of Robert Mahoney, Northrop Grumman]

npp_viirs_Mband_SDRs_TrueColor_M5_M4_M3_subset_gtmconverted_chile_volcano_14Dec2011.jpg

npp_viirs_Mband_SDRs_TrueColor_M5_M4_M3_subset_chile_volcano.jpg



2012 August 22:

From automated processing of VIIRS granules at CIRA: An example of a Suomi NPP VIIRS visible band M5 (0.672 µm) granule (center portion only) over the northern reaches of Russia. Besides clouds, an island in the Arctic Ocean, mostly covered by glaciers, is also seen. To locate this granule on the Earth see the lower figure.

NPP-VIIRS_M05_20120822_070945_021.GIF

NPP-VIIRS_M05_20120822_070945_022.GIF



2012 August 15:

VIIRS western U.S. fires, August 2012. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_Western_Fires_082012.pptx (7.5 MB)



2012 August 01:

The center portion of a single VIIRS SDR granule of Rayleigh-corrected true-color imagery created from bands M5/M4/M3 at 750 m resolution. Note the bow-tie deletions at the sides of the granule, and note that the image is upside-down due to the ascending pass over Colorado. This example includes a smoke plume from the early stages of the High Park fire on 10 June 2012. Image processing was done with McIDAS-X.

NPP-VIIRS_2012162_195925_RGB_Ray-corr_sqrt.JPG



2012 July 27:

Using a lunar irradiance model to produce reflectance imagery, similar to NCC, for the lunar terminator (i.e., nighttime, moon setting in the west), not the day/night terminator. Includes Curtis Seaman's day/night terminator example of both DNB imagery and the resulting NCC product for the same granule. [Presentation courtesy of Steven Miller, CIRA]

2012_DNB_Reflectance_Miller.pptx (~4 MB)



2012 July 23:

The Aurora Australis @ 0300 UTC on 15 July 2012 was so bright and intense, the Ronne Ice Shelf can be seen. [Image courtesy of William Straka III, CIMSS]

DNB_07152012_0300_Ronne.png



2012 July 17:

NCC EDR Status report. [Presentation courtesy of Calvin Liang, NGAS]

imagery_tagup_cliang_2012-07-18.pptx (~1.5 MB)



2012 July 16:

An exampe of McIDAS-V display of the various parameters available at each image pixel and associated with each VIIRS image granule. [Image courtesy of Tommy Jasmin, CIMSS/SSEC]

Screen shot 2012-07-16 @ 10.00.52 AM.png


An example of McIDAS-V display of DNB imagery. [Image courtesy of Tommy Jasmin, CIMSS/SSEC]

Screen shot 2012-07-16 @ 10.00.33 AM.png


VIIRS DNB Aurora Event, 15 July 2012. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_DNB_Aurora_07152012_McV.pptx (~7 MB)



2012 July 02:

VIIRS in McIDAS-V: East Coast Power Outage. [Presentation courtesy of William Straka III, CIMSS]

VIIRS_AWIPS_East_Coast_Power_Outage _McV.pptx (~5 MB)



2012 June 28:

Ice breakup on the Yukon River (Alaska). [Presentation courtesy of Curtis Seaman, CIRA]

alaska_ice.pptx (~3.5 MB)



2012 June 27:

There are now ten (10) domains globally that contain VIIRS-specific products at http://www.nrlmry.navy.mil/VIIRS.html. Below is a relatively cloud free true color image example for the Arctic (Chukchi Sea) on 20 June 2012. [Image courtesy of Jeff Hawkins, NRL, Monterey]

20120620_000014_npp_viirs_True-Color_ChukchiSea_covg100p00.jpg



2012 June 20:

An example of the geolocation error from 6 June 2012. [Image courtesy of Dan Lindsey, NOAA/StAR]

6jun12_iband4_0809Z.png



2012 June 19:

Prospects for improved global mapping of development using VIIRS (DNB) data. [Presentation courtesy of Chris Elvidge, NGDC]

Elvidge_EORSA_20120610.ppt (~4 MB)


Low clouds over Great Lakes for 5 May 2012. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

LOW_CLOUDS_GREAT_LAKES_20120505.pptx (~1.5 MB)


Oceanic features via VIIRS Imagery from 25 April 2012. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

OCEAN_FRONTS_CONUS_EAST_20120425.pptx (~2.5 MB)


AVHRR & VIIRS true color comparisons at edge of scan for 22 April 2012. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

EDGE_OF_SCAN_CA_20120422.pptx (~1 MB)


Jacksonville-County Line fire from 11 April 2012 using VIIRS night and daytime views and night views during nearly full moon conditions. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

FLA_FIRE_0411.pptx (~7 MB)


VIIRS data source comparison: GRAVITE vs. PEATE vs. Direct Broadcast. The imagery appears identical, but the navigation shift of the direct broadcast data is obvious. [Presentation courtesy of Dan Lindsey, NOAA/StAR]

viirs_data_source_comparison.pptx (~1 MB)



2012 June 18:

Below is an image of the Yukon River delta region from 20 May 2012. This image is a false color RGB composite from VIIRS that makes identifying ice and snow easy. Ice and snow show up as blue, clouds containing ice crystals show up as a more pale blue, liquid clouds show up as white (or a dirty, off-white), vegetation shows up as green, and open water is nearly black. [Image courtesy of Curtis Seaman, CIRA]

yukon_ice_20120520_2323_SVIRGB.jpg



2012 June 15:

Below is a VIIRS DNB image from 14 May 2012 that is now on display in lobby at the USGS EROS facility in Sioux Falls SD. [Thanks to Kevin Gallo, NOAA/StAR]

VIIRS_DNB_14May2012_Bakken.jpg


VIIRS M-band imagery (750 m resolution) over the Great Lakes on 10 June 2012. There is sunglint on the water bodies in this image, but the plumes in Lake Erie can still be seen. Image was requested by and sent to Al Powell, StAR. [Image courtesy of Steve Miller, CIRA]

20120610.1814.NPP.VIIRS.true.East_GreatLakes.NEW.jpg



2012 June 12:

VIIRS image of the High Park Fire from 10 to 12 June 2012 for the 3.7 um and 4.0 um channels. Note that I-04 and M-12 were saturating in this fire. M-13 peaked at 570 K! [Presentation courtesy of Curtis Seaman, CIRA]

I04_saturation_High-Park-fire.pptx (~2.5 MB)



2012 June 12:

Multi-sensor data comparisons for a recent dust event in Afghanistan. Please see notes section for specific info and acknowledgments. The slides include DNB and VIIRS dust algorithm examples. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

Dust-DNB-others-June-3-2012.pptx (~3 MB)



2012 May 30:

VIIRS images of the smoke plume from the Whitewater - Baldy Complex Fire in New Mexico on 29 May 2012, illustrating that the smoke plume is much more visible in the blue band than the red band. [Presentation courtesy of Curtis Seaman, CIRA]

smoke_visibility_VIIRS.pptx (~3 MB)



2012 May 24:

VIIRS true color image from 20 May 2012 @ 1949 UTC over the Four Corners area, showing the colorful deserts of southern Utah and the Grand Canyon area. [Image courtesy of Steven Miller, CIRA]

20120520.1949.NPP.VIIRS.true.West_FourCorners.HDF.jpg



2012 May 16:

A recent sample from the NexSat VIIRS page that facilitates intercomparisons with heritage sensors, showing how sun glint can assist in ocean front and eddy analyses. [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

NRL-VIIRS-Ocean Fronts&Eddies.pptx (~2.5 MB)



2012 May 15:

VIIRS DNB image for 15 May 2012 @ ~0825 UTC showing the Hewlett forest fire in the Poudre River canyon NW of Fort Collins CO. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

viirs_dnb_15may12_hewlett_fire.png



2012 May 11:

VIIRS NCC (EDR) image for 11 May 2012 @ ~0759 UTC showing two items of note: First, this is a good example how striping affects the NCC Imagery, but the rapid transition from marked striping to no appearance at all is remarkable. Second, the diagonal shape on the left (west) side of the image is one of the first signs of the "erosion" that occurs as NCC imagery moves away from full moon. [Image courtesy of Tom Kopp, Aerospace]

NCC_USA_d20120511_t0759309.jpg



2012 May 09:

An analysis of DNB granules collected before and after the image of North Dakota (immediately below) reveals stray light increasing from the top to the bottom of the image, where the striping completely disappears. Even if heavily stretched, the area of the image below Chicago has very little striping: [Presentation courtesy of Jason Geis, Aerospace]

North_Dakota_Image_StrayLight.pptx (~2 MB)



2012 May 08:

VIIRS DNB image for 30 April 2012 over North Dakota and Minnesota, with a large cluster of oil well flares in northwest ND. The striping in the imagery is a result of the high degree of enhancement used in extremely low light conditions and is not un-expected. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

2012-04-30_DNB_midwest.png



2012 May 02:

VIIRS SDR band-M6 images of showing the effect of the radiance foldover for large radiances: [Presentation courtesy of Curtis Seaman, CIRA]

M06_saturation.pptx (~2 MB)



2012 April 26:

An example of VIIRS true-color imagery of a dust storm in Iraq on 20 April 2012: [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

Dust-event-VIIRS-truecolor-April18-20.pptx (~5 MB)



2012 April 24:

An analysis of detector-to-detector striping in VIIRS imagery for several granules on 9 April 2012. [Presentation courtesy of Stan Kidder, CIRA]

A_Quick_Look_at_Striping.pptx (~20 MB)



2012 April 20:

An analysis of VIIRS M6 saturation or foldover at high radiances, as seen on highly-reflective cloud tops. [Presentation courtesy of Chris Moeller, CIMSS]

NPP_VIIRS_M6_Earth_Scene_Saturation_Moeller_2012.03.22.pptx (~6 MB)


Suomi NPP Imagery EDR Team slides presented at the 17-18 April 2012 Cal/Val workshop in Greenbelt MD.

NPP_Imagery_Team_2012-April_VIIRS_cal-val_workshop.pptx (~35 MB)



2012 February 22:

An example of VIIRS true-color and Dust Product imagery of a dust storm in the Texas Panhandle on 20 February 2012 that caused a 30 car pileup, and very unfortunately a couple fatalities: [Presentation courtesy of Steven Miller, CIRA]

VIIRS_Dust_Texas.pptx (<1 MB)



2012 February 16:

An example of DNB and other VIIRS imagery of a Topical Cyclone Jasmine is available below: [Presentation courtesy of Jeff Hawkins, NRL, Monterey]

NRL DNB tropical cyclone sample.pptx (<1 MB)


An example of detecting fires in DNB imagery. The bright dotted lines in southern Iraq are gas flares at oil drilling/refinery sites, as seen on 7 February 2012 @ 2237 UTC. [Image courtesy of Steven Miller, CIRA]

20120207.2237.viirs.DNB.KuwaitGasFlares.png



2012 February 14:

About 10 to 15% of the VIIRS Imagery "EDR" (GTM projection) granules have been discovered to have corrupted data in the triangular regions in the upper right and lower left portions of the granules. These triangular regions are associated with pixels mapped from the adjacent (+1 and -1 buffered) VIIRS Imagery "SDR" granules. The corrupted values are generally fall within the valid data range but appear to be duplicated data values or values that are suspicious (ie. constant reflectance values of 1.6). Multiple VIIRS Imagery EDR bands are affected by the same problem. Below are some images of the "problem". [Information and images courtesy of Robert Mahoney, Northrop Grumman, and Curtis Seaman, CIRA]

The first image is the EDR composite of channels I1, I2, and I3, with the triangular section of apparently missing data. This missing data is present in each of those band files.

npp_19jan2012_AfghanPak_fullgran3_falsecolor_I3_I2_I1_subsampled.jpg

The second image is the SDR composite of the same channels, with no section of missing data.

VIIRS_RGB_I321_20120119_092643_092807_test_downsampled.jpg

In the third image, an outline is plotted of where the data from the SDRs lines up with the data from the EDRs. It appears that the corner of missing data in the EDRs should be coming from the next granule in time. The data in the opposite corner must be coming from the previous granule.

npp_19jan2012_AfghanPak_fullgran3_I1_test.png

Verification of the problem (granules visually examined) occurred over New Zealand (25 Jan 2012), and over the Arabian Sea (19 Jan 2012). The VIIRS granules for the Saudi Arabia case with the "triangular issue" are available via FTP, which includes the EDRs from Robert Mahoney, the associated SDRs, and the images created from them. Go to ftp://ftp.cira.colostate.edu/ftp/Seaman/satdat/VIIRS/



2012 February 01:

Three additional (NRL/CIRA) AMS 2012 New Orleans presentations can be downloaded at the links immediate below:

ftp://ftp-ex.nrlmry.navy.mil/receive/NRLAMS11.ppt (Lee et al, VIIRS, 4 MB)
ftp://ftp-ex.nrlmry.navy.mil/receive/NRLAMS22.ppt (Miller et al, DNB, 23 MB)
ftp://ftp-ex.nrlmry.navy.mil/receive/NRLAMS33.ppt (Kuciauskas et al, NexSat, 17 MB)



2012 January 31:

Below is a color-enhanced VIIRS I-band-5 (375 m resolution) IR image for 25 January 2012 for Tropical Cyclone Funso in the southwestern Indian Ocean. [Image courtesy of CIRA/RAMMB]

2012-01-25_Funso.jpg

Examples of VIIRS imagery generated by CIRA/RAMMB were featured on NASA's NPP website at http://suomi.gsfc.nasa.gov/science/feature2012-0126.html. The imagery depicts Tropical Cyclone Funso in the southwestern Indian Ocean.



2012 January 27:

D. Hillger (NOAA/StAR) and Tom Kopp's (Aerospace Corp.) AMS 2012 New Orleans presentation can be downloaded at the link immediate below:

First_Images_and_Products_from_VIIRS_on_NPP_AMS_2012_4.6.pptx (25 MB)



2012 January 23:

Below is a comparison between GOES and VIIRS window IR from ~0700 UTC on 23 January 2012 (before the deadly storms struck Birmingham). Note the -78 deg C brightness temperature with VIIRS, compared to -55 deg C with GOES. This is a good example of how the finer resolution of VIIRS allows small overshooting tops to seen much more accurately.

G13_VIIRS_IR_23JAN12_0702UTC.jpg



2012 January 19:

Below are VIIRS I-band-5 (375 m resolution) IR images (grey-scale and color-enhanced) for 19 January 2012 @ ~0620 UTC over the U.S. Note that this IR image is noisy, due to the still-cooling IR detectors at this time. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

Iband5_19jan12_0620Z.png Iband5_19jan12_0620Z_CIRA_colortable.png



2011 December 21:

Below is a VIIRS M-band (750 m resolution) true-color/RGB image (consisting of several granules for 20 December 2011) composited over the continental U.S. [Image courtesy of Stan Kidder, CIRA]

VIIRS_TrueColor_20Dec2011.gif



2011 December 15:

Below is a VIIRS M-band (750 m resolution) true-color/RGB image (for 14 December 2011) over northeastern India and Nepal. Note the large amount of pollution over India relative to Tibet, and how the mountains keep it all to the south. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

true_color_14dec11_0725Z_nepal.png



2011 December 12:

Below is a VIIRS M-band (750 m resolution) true-color/RGB image (for 9 December 2011) over the U.S. upper midwest. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

true_color_9dec11.png


Below is a VIIRS M-band (750 m resolution) true-color/RGB image (for 7 December 2011) over the southern U.S. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

true_color_7dec11.png



2011 December 09:

S. Miller's CIRA/NRL presentation "VIIRS Imagery Examples" can be downloaded at the link immediate below:

VIIRS_Examples_CIRA_NRL_12-09-2011.ppt (12 MB)



2011 December 06:

Below is a VIIRS M-band (750 m resolution) true-color/RGB image (for 3 December 2011) with cloud vortices over the Canary Islands, just off of NW Africa. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

canary_islands_3dec11.png



2011 November 25:

Below is a VIIRS M-band (750 m resolution) true-color/RGB image (for 25 November 2011) with a nice contrast of the open ocean v/s ice. The map is the Antarctic Peninsula which extends toward the tip of S. America, and the Weddell Sea on the right in the image. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

antarctica_24nov11.png



2011 November 23:

Below is a VIIRS M-band (750 m resolution) true-color/RGB image (for 22 November 2011) over Hurricane Kenneth in the east Pacific. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

VIIRS_RGB_Kenneth_22nov11.png



2011 November 22:

Among the VIIRS M-band (750 m resolution) true-color/RGB images created from the first data from VIIRS is the following image of the Brazilian coast created using McIDAS-V. [Image courtesy of Tom Rink, CIMSS]

northernBrazilzoom.jpeg

Another VIIRS M-band (750 m resolution) true-color/RGB image of the western coast of South America. [Image courtesy of Tom Rink, CIMSS]

SAcoast.jpeg


Below is a VIIRS M-band (750 m resolution) true-color/RGB image from the first day of NPP data (from 21 November) over Hurricane Kenneth in the east Pacific. [Image courtesy of Dan Lindsey, NOAA/NESDIS/StAR]

VIIRS_RGB_Kenneth_21nov11.png



2011 November 18:

The VIIRS first-light images are scheduled for 1604 UTC on 21 November 2011 [Julian Day 325]. Note that is not the time we'll actually receive the imagery, since the data won't be downloaded until NPP goes over Svalbard, the data passes through the ground system infrastructure, and is created by the IDPS! The delay might be on the order of hours!

Below are sections of the orbital track for that first orbit. The first one is for 1600-1610 UTC (over the South Atlantic Ocean), and the second one is for 1800-1820 UTC (near NASA HQ!). [Images courtesy of Stan Kidder, CIRA]

NPP_1600-1610_21Nov2011.gif

NPP_1800-1820_211Nov2011.gif



2011 November 08:

A zoomed-in VIIRS M-band (750 m resolution) true-color of simulated/proxy data (nowhere near full resolution), created from data on GRAVITE. [Image courtesy of Jeremy Solbrig, NRL, Monterey]

truecolor_test_cropped.jpg


Aerospace Imagery Visualization Tool Example [Image courtesy of Tom Kopp, Aerospace Corp.]

Aerospace_Imagery_Visualization_Tool_Example.png



2011 October 25:

Simulated/proxy VIIRS image loop (thru I and M bands) [Image courtesy of Tom Rink, CIMSS]

viirsloop.gif


Suomi NPP Reference Information/Websites

VIIRS Imagery Documents