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Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2300 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2301 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2302 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2303 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2304 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2305 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2306 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2307 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2308 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2309 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2310 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2311 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2312 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2313 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2314 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2315 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2316 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2317 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2318 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2319 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2320 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2321 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2322 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2323 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2324 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2325 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2326 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2327 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2328 UTC
Day Cloud Phase / Night Microphysics - Day: show cloud-top phase; Night: distinguish clouds / fog - 16 Jan 2025 - 2329 UTC
Day Cloud Phase key:
1 - Low level clouds with water droplets (cyan, lavender) 2 - Glaciating clouds (green) 3 - Snow (shades of green) 4 - Thick high level clouds with ice particles (yellow) 5 - Thin mid level clouds with water droplets (magenta) 6 - Thin high-level clouds with ice particles (red-orange) 7 - Land surface (shades of blue) 8 - Water surface (black)
The STAR GOES Imagery Site team has developed the Day Night Cloud Micro Combo product to more efficiently deliver the observational value of both the Day Cloud Phase Distinction & Night Microphysics RGB products.
Daytime: Day Cloud Phase RGB The daytime period of this RGB helps evaluate the phase of cooling cloud tops to monitor convective initiation, storm growth, and decay. It can also be used to identify snow on the ground. The Day Cloud Phase Distinction RGB takes advantage of cloud reflectance differences between the visible and near infrared channels and temperature variances between land and clouds in the infrared to provide increased contrast between background surfaces and phases of clouds (i.e., water vs. ice). Due to its reliance on visible bands 2 and 5, it is only usable during daylight hours. This composite was developed by the Japan Meteorological Agency (JMA) for Himawari-8. Interpretation is still under investigation.
Nighttime: Nighttime Microphysics RGB The distinction between low clouds and fog in satellite imagery is challenging. While the difference between the 10.4 and 3.9 μm channels has been a regularly applied product to meet aviation forecast needs, the Nighttime Microphysics (NtMicro) RGB adds another channel difference (12.4- 10.4 μm) as a proxy to cloud thickness and repeats the use of the 10.4 μm thermal channel to enhance areas of warm (i.e., low) clouds where fog is more likely. The NtMicro RGB is also an efficient tool to quickly identify other cloud types in the mid and upper atmosphere.