VIIRS Imagery in NinJo K. Hungershoefer 1 , D. Hoese 2 , W. Straka III 2 , R. Garcia 2 , E. Schiffer 2 , J. Asmus 1 , K. Strabala 2 1 Deutscher Wetterdienst, Research and Development, Central Development Division, Offenbach, GERMANY 2 Cooperative Institute for Meteorological Satellite Studies (CIMSS), Space Science and Engineering Center (SSEC), University of Wisconsin – Madison, Wisconsin, U.S.A Contact: Katja Hungershoefer ([email protected]) NinJo-TIFF hereafter, GeoTIFF images and png/jpeg files with special headers. To provide Suomi NPP VIIRS images to the forecasters via NinJo, the following processing chain was built up at DWD: The received Suomi NPP raw telemetry data is converted to a level 0 format with the NASA Real-time Software Telemetry Processing System (RT- STPS) following the Consultative Commitee for Space Data Systems (CCSDS) standard, first. X-band reception of Suomi NPP satellite DB data VIIRS RDR conform level 0 data VIIRS SDR geolocated, calibrated level 1 swath data RT-STPS Polar2Grid Polar2grid reprojects the VIIRS SDRs into either an Advanced Weather Interactive Processing System (AWIPS I and II) compatible netCDF file or a GeoTIFF image. Using the libtiff library together with newly written python bindings, it is also possible to obtain NinJo-TIFFs. This last option is applied at DWD to re- project the VIIRS images to a region slightly larger than Germany. Finally, the generated NinJo-TIFFs are submitted to the NinJo servers with DWD‘s automated file distributor (AFD). VIIRS Processing Chain at DWD VIIRS Examples in NinJo The Deutscher Wetterdienst (DWD) uses the meteorological workstation system NinJo for its operational forecasting and warning services. The java-based, high-performance client- server architecture allows a highly configurable, layer-based visualisation of almost all available data types like surface measurements, radio soundings, NWP output, radar and satellite products within a multi-window technology. Possible import formats for satellite images are multi-resolution, tiled, TIFF images with custom tags, called The Community Satellite Processing Package (CSPP) transfers these raw data records (RDR) to Sensor Data Records (SDR) based on Raytheon‘s Algorithm Development Library (ADL). CSPP was developed by the Cooperative Institue for Meteorological Satellite Studies (CIMSS), Space Science and Engineering Center (SSEC) within the NASA/NOAA Joint Polar Satellite System (JPSS) project. Beside CSPP, CIMSS/SSEC also designed the CSPP VIIRS reprojection software Polar2grid. CSPP AFD VIIRS SDR Re-projected VIIRS level 1 data The single channel VIIRS images can be combined to RGBs in NinJo itself: The RGB for 05-Feb-2013 at 11:32 UTC shows a strong cold front across Germany. Inside this strong convection zone, the first thunderstorm of the year occured. The RGB for 01-Mar-2013 at 12:22 UTC shows a synoptic situation where Norwegian foehn brings sunshine to Schleswig-Holstein and Mecklenburg- West Pomerania. The cloud-free condition on 04-Mar- 2013 shows the remaining snow cover. Only some fog is observed at the North Friesland coast. The VIIRS Day-Night band (DNB) is an interesting new channel, because it allows measurements in the visible spectral range during nighttime. Hence, it offers the possibility to detect low stratus/fog during the night (see 30-Sep- 2012). The last example (13-Mar-2013) shows a NinJo-screenshot where a VIIRS-RGB is combined with surface and radar measurements.

VIIRS Imagery in NinJo - Satellite Conferences · VIIRS Imagery in NinJo K. Hungershoefer 1, D. Hoese 2, W. Straka III 2, R. Garcia 2, E. Schiffer 2, J. Asmus 1, K. Strabala 2 1Deutscher

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Page 1: VIIRS Imagery in NinJo - Satellite Conferences · VIIRS Imagery in NinJo K. Hungershoefer 1, D. Hoese 2, W. Straka III 2, R. Garcia 2, E. Schiffer 2, J. Asmus 1, K. Strabala 2 1Deutscher

VIIRS Imagery in NinJoK. Hungershoefer 1, D. Hoese 2, W. Straka III 2, R. Garcia 2, E. Schiffer 2, J. Asmus 1, K. Strabala 2

1Deutscher Wetterdienst, Research and Development, C entral Development Division, Offenbach, GERMANY2Cooperative Institute for Meteorological Satellite Studies (CIMSS), Space Science and Engineering Cent er

(SSEC), University of Wisconsin – Madison, Wisconsin , U.S.A

Contact: Katja Hungershoefer (Katja.Hungershoefer@dw d.de)

NinJo-TIFF hereafter, GeoTIFF imagesand png/jpeg files with special headers.

To provide Suomi NPP VIIRS images to the forecasters via NinJo, the followingprocessing chain was built up at DWD:

The received Suomi NPP raw telemetrydata is converted to a level 0 format withthe NASA Real-time Software Telemetry Processing System (RT-STPS) following the ConsultativeCommitee for Space Data Systems (CCSDS) standard, first.

X-band reception of Suomi NPP

satellite DB data

VIIRS RDR

conform level 0 data

VIIRS SDR

geolocated, calibrated level 1

swath data

RT-STPS Polar2Grid

Polar2grid reprojects the VIIRS SDRs into either an Advanced WeatherInteractive Processing System (AWIPS I and II) compatible netCDF file or a GeoTIFF image. Using the libtiff librarytogether with newly written pythonbindings, it is also possible to obtainNinJo-TIFFs.This last option is applied at DWD to re-project the VIIRS images to a regionslightly larger than Germany. Finally, thegenerated NinJo-TIFFs are submitted to the NinJo servers with DWD‘sautomated file distributor (AFD).

VIIRS Processing Chain at DWD

VIIRS Examples in NinJo

The Deutscher Wetterdienst (DWD)uses the meteorological workstationsystem NinJo for its operational forecasting and warning services. Thejava-based, high-performance client-server architecture allows a highlyconfigurable, layer-based visualisation of almost all available data types likesurface measurements, radio soundings, NWP output, radar and satellite productswithin a multi-window technology. Possible import formats for satelliteimages are multi-resolution, tiled, TIFF images with custom tags, called

The Community Satellite ProcessingPackage (CSPP) transfers these rawdata records (RDR) to Sensor Data Records (SDR) based on Raytheon‘sAlgorithm Development Library (ADL). CSPP was developed by theCooperative Institue for MeteorologicalSatellite Studies (CIMSS), SpaceScience and Engineering Center (SSEC) within the NASA/NOAA Joint Polar Satellite System (JPSS) project. BesideCSPP, CIMSS/SSEC also designed theCSPP VIIRS reprojection softwarePolar2grid .

CSPP AFD

VIIRS SDR

Re-projected VIIRS level 1 data

The single channel VIIRS images can becombined to RGBs in NinJo itself:

The RGB for 05-Feb-2013 at 11:32 UTC shows a strong cold front acrossGermany. Inside this strong convectionzone, the first thunderstorm of the yearoccured. The RGB for 01-Mar-2013 at 12:22 UTC shows a synoptic situation whereNorwegian foehn brings sunshine to Schleswig-Holstein and Mecklenburg-West Pomerania. The cloud-free condition on 04-Mar-2013 shows the remaining snow cover.

Only some fog is observed at the North Friesland coast.

The VIIRS Day-Night band (DNB) is an interesting new channel, because itallows measurements in the visiblespectral range during nighttime. Hence, it offers the possibility to detect lowstratus/fog during the night (see 30-Sep-2012).

The last example (13-Mar-2013) showsa NinJo-screenshot where a VIIRS-RGB is combined with surface and radarmeasurements.