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R G B Airmass and Dust products

R G B Airmass and Dust products. NASA SPoRT CIRA. RGB Air Mass. Primary Applications: Identify boundary of polar and tropical air masses Locate areas of large potential vorticity due to jet streaks. RED (6.2 – 7.3) –vertical moisture distribution

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R G B Airmass and Dust products

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  1. RGBAirmass and Dust products NASA SPoRT CIRA

  2. RGB Air Mass • Primary Applications: • Identify boundary of polar and tropical air masses • Locate areas of large potential vorticity due to jet streaks RED (6.2 – 7.3) –vertical moisture distribution GREEN (9.7 -10.7) – tropopause height based on ozone concentration BLUE (6.2) – upper level moisture Tropical air masses are green to tan colors while polar air masses are purple. Jet streaks appear bright red due to stratospheric intrusions they cause. Cold, dry upper levels Pot. Vorticity, Jet Streak Warm, moist upper levels Cool, moist upper levels Cool, moist upper levels Warm, moist mid levels

  3. RGB Air Mass Details Above are details from SPoRT’s RGB Quick Guide to help understand color contributions to resulting composite. It can be found at: http://weather.msfc.nasa.gov/sport/training/rgb_airmass/RGB%20Air%20Mass%20Reference%20Guide.pdf EUMETSAT has developed color interpretation guides for RGBs. See: http://oiswww.eumetsat.int/~idds/html/product_description.html

  4. Hurricane Philippe (2011)RGB Air Mass • Applications for extratropical transition monitoring • Stratospheric intrusion and associated jet streak shown in red coloring • Helps to indicate when transition is beginning to occur • Blue indicating cooler air resulting from more baroclinic activity to the southwest (i.e. there’s less green here so less tropical in nature)

  5. Hurricane Philippe (2011)RGB Air Mass Training Module RGB is better than WV to compare to model forecasts/analysis of RGB, GFS 500mb Height and Vorticity00Z on 10/8

  6. Dust Event from 07/20/12RGB Dust Product • Primary Applications: • Identify airborne dust (magenta coloring) from cloud features • Highlights moisture boundaries RED (12 – 10.8) –Optical Thickness GREEN (10.8 – 8.7) – Particle Phase BLUE (10.8) – Object surface temperature Dust areas are in magenta shades. Over water, magenta dust is influenced by thermal signature of SST. Over land, intense magenta from storm outflows show dust initiation transport. Dust Lack of Dust Note more blue vs magenta shades in areas where tropical storms are located.

  7. RGB Dust Details Above are details from SPoRT’s RGB Quick Guide to help understand color contributions to resulting composite. It can be found at: http://weather.msfc.nasa.gov/sport/training/rgb_dust/RGB%20Dust%20Reference%20Guide.pdf EUMETSAT has developed color interpretation guides for RGBs. See: http://oiswww.eumetsat.int/~idds/html/product_description.html Dust (Day time)

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