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Louisiana tornadoes, here shown via color-enhanced VIIRS band I5 image at 375-m Hurricane Lester, 29 August 2016 VIIRS I-band-4 Imagery, 11 July 2016 Fires and Smoke in VIIRS Imagery, 16 June 2016 Tropical Cyclone Fantala, 17 April 2016 Pavlof Volcano, 27 March 2016 NCC viewed in AWIPS-2, 24 February 2016 Saharan Dust, 21 February 2016

Image of the Month: Louisiana Tornado Outbreak
Don Hillger; Dan Lindsey

9-Feb-17 - This VIIRS infrared image shows active thunderstorms across the Gulf Coast region of the U.S. from the afternoon of 7 Feb. 2017. Multiple tornado, large hail, and damaging wind reports were associated with these storms. The 375-m resolution provides a very detailed view of the cloud-top structure, highlighting features such as overshooting tops and enhanced-V's. The image is a color-enhanced VIIRS band I5 image at 375-m.

Hurricane Lester
Don Hillger; Dan Lindsey

29-Aug-16 - Hurricane Lester, spinning in the east Pacific, reached its peak intensity of 120 kts on the afternoon of 29 Aug. 2016. VIIRS passed over near that time and collected these full resolution 375 m images. The large image is from infrared I-band 5, and the inset is the corresponding I-band 1 visible.

VIIRS I-band-4 Imagery
Don Hillger; Dan Lindsey

11-Jul-16 - A VIIRS I-band-4 image from 11 July 2016 at 3:05 am shows the location of the hotspots from fires in Colorado. The smoke that residents could smell in Ft. Collins (not visible in this image) came from the northwest originating from the Beaver Creek fire.

Fires and Smoke in VIIRS Imagery
Don Hillger

16-Jun-16 - False three-color image of fires and smoke from 16 June 2016 at 1954 UTC. The two main fires in Arizona and New Mexico, as well as a smaller fine in southeastern Colorado, caused a smoke layer over eastern Colorado. This product is a result of Principal Component Analysis of the VIIRS M-band imagery, with the main signal coming from the visible/reflective bands M1-M5.

Tropical Cyclone Fantala
Don Hillger; Dan Lindsey

17-Apr-16 - Tropical Cyclone Fantala achieved a category 5 intensity of 150 knots (172 mph) on 17 April as it passed north of the island of Madagascar in the southwestern Indian Ocean. These daytime Infrared and Visible images from the VIIRS 375-m I-bands show a very well-organized storm with a warm eye, symmetric cold central dense overcast, and evidence for mesovortices in the low-level clouds inside the eye.

Pavlof Volcano
Don Hillger; Steve Miller

27-Mar-16 - An example of a multi-spectral RGB image that includes DNB and ash detection.
Suomi NPP VIIRS image from about 1:30 AM local time (~9 hours after the initial eruption of Pavlof on March 27, 2016). Information from the Suomi NPP DNB sensor has been blended with other measurements that are sensitive to the temperature and composition of water/ice clouds and volcanic ash. Low water clouds and snow cover are shown in yellow, higher/thicker ice clouds inshades of blue, and the heart of Pavlof's ash plume streaming to the northeast depicted in red/orange.

VIIRS NCC as viewed in AWIPS-2
Don Hillger; Dan Lindsey; Jorel Torres

24-Feb-16 - A screen capture from the Advanced Weather Interactive Processing System (AWIPS)-2 of the VIIRS Near Constant Contrast (NCC) product from February 24, 2016 - 2:06 am EST. This occurred near full moon, so many cloud-top details can be seen in the line of thunderstorms approaching Florida. A number of lightning flashes are also evident in the line of storms.

Image of the Month - Saharan Dust
Don Hillger; Curtis Seaman

21-Feb-16 - VIIRS True Color RGB composite image of Saharan dust covering Spain and Portugal (12:40 UTC 21 February 2016).
The VIIRS Imagery and Visualization Team Blog has been updated with a new blog post titled, 'The Sirocco and the Giant Bowl of Dust'. This post compares VIIRS imagery of recent dust events over Europe and the Takla Makan desert of western China. Various methods for detecting dust are shown and discussed.
Click here to view more images and animations.

Latest JSTAR Updates

JPSS Block 2 is going to operational soon. The major algorithm updates for sensor data records (SDRs) include: ATMS Full Radiance Calibration, CrIS Full Spectral Resolution SDR, CrIS Fringe Count Error Correction (FCE) algorithm, VIIRS Geo code fix for Sector rotation flagging. The enterprise EDR algorithms, including VIIRS Aerosol, Clouds, and Cryosphere are also going to be in operation very soon (March-April 2017).

STAR JPSS 2016 Annual Science Team Meeting. From August 8-12, 2016, STAR JPSS successfully held its third Annual Science Team Meeting at NCWCP. Over 350 scientists from NOAA, NASA, Universities, and industries attended the meeting.

VIIRS Global Surface Type (GST) annual update The GST-2015 products can be downloaded from following FTP link:

S-NPP_VIIRS_GST_IGBP_2015

For more information please contact Rui Zhang or Xiwu Zhan.

JPSS Life-Cycle Data Reprocessing Workshop. The Workshop was held on May 17-18, 2016. Nearly 70 technical staff and associates participated in the workshop directly or remotely via Webex. The theme of the workshop was to "Maximize JPSS data applications through SDR and EDR reprocessing". Summary report, (PDF, 17.4 MB).

JPSS Enterprise Algorithms Workshop From March 30-31, 2016, STAR JPSS Management hosted the JPSS Enterprise Algorithms Workshop. Science teams and corresponding stakeholders met to discuss the current status of Level 2 JPSS products and their progress/plans toward Enterprise Algorithm development. Presentations are available here.

Validated Maturity Review for Green Vegetation Fraction, Vegetation Health, VIIRS Polar Winds, MIRS (Moisture Profile, Temperature Profile, Rainfall Rate, Total Precipitable Water), NUCAPS (IR Ozone Profile & CrIS Outgoing Longwave Radiation), and GCOM AMSR2 Day-1 Products (Sea Surface Temperature, Imagery, Cloud Liquid Water, Precipitation Type/Rate, Total Precipitable Water, Sea Surface Wind Speed) on October 18-19, 2016

Critical Design Review for updates to NDE and Okeanos algorithms for JPSS-1 on October 27, 2016

JSTAR Newsletter

Message from the Program Manager: Welcome to the new STAR JPSS Monthly Newsletter. September was a busy month for the STAR JPSS Program. STAR OMPS NP V8Pro DAP was delivered to NDE on Sept 30th 2016. STAR ASSIST and land teams completed critical design reviews for surface reflectance, LST & Albedo, Vegetation Indexes algorithms. The surface albedo team supported a LUT update in operation. The aerosol team organized a two-day workshop on September 13-14, 2016 and conducted briefings and interactive hands-on tutorials for science and operational users. STAR SDR/EDR teams also provided extensive independent assessments of the JPSS Block 2.0 testing and the results were reported back to the JPSS program as part of the JPSS-1 Cal Val Readiness.

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