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WV-3481: Update Himawari-8 to Himawari-9 #5695

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Feb 19, 2025
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WV-3481: Update Himawari-8 to Himawari-9 #5695

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4 changes: 2 additions & 2 deletions config/default/common/config/metadata/layers/himawari/Himawari_AHI_Air_Mass.md
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Note: This layer is generally available for the **most recent 90 days**, though certain historical ranges are also preserved.

The Air Mass layer from the Himawari-8 Advanced Himawari Imager (AHI) is used primarily for distinguishing between polar and tropical air masses, especially along frontal boundaries and identify high, mid, and low-level clouds. It can also be used to infer cyclogenesis by identifying warm, dry, ozone-rich descending stratospheric air associated with jet streams and potential vorticity (PV) anomalies. The RGB image is comprised of Bands 6.2-7.3, 9.6-10.4 and 6.2.
The Air Mass layer from the Himawari-9 Advanced Himawari Imager (AHI) is used primarily for distinguishing between polar and tropical air masses, especially along frontal boundaries and identify high, mid, and low-level clouds. It can also be used to infer cyclogenesis by identifying warm, dry, ozone-rich descending stratospheric air associated with jet streams and potential vorticity (PV) anomalies. The RGB image is comprised of Bands 6.2-7.3, 9.6-10.4 and 6.2.

The Himawari-8 satellite is centered on 140.7 degrees E, covering most of the Pacific Ocean, a portion of Eastern Asia, and parts of Australasia. The Himawari-8 AHI imagery is available on a rolling 90-day basis at 10 minute intervals. The sensor resolution is 2 km, the imagery resolution in Worldview/Global Imagery Browse Services (GIBS) is 2 km, the temporal resolution is 10 minutes, and the latency (time from satellite acquisition to availability in GIBS) is approximately 40 minutes.
The Himawari-9 satellite is centered on 140.7 degrees E, covering most of the Pacific Ocean, a portion of Eastern Asia, and parts of Australasia. The Himawari-9 AHI imagery is available on a rolling 90-day basis at 10 minute intervals. The sensor resolution is 2 km, the imagery resolution in Worldview/Global Imagery Browse Services (GIBS) is 2 km, the temporal resolution is 10 minutes, and the latency (time from satellite acquisition to availability in GIBS) is approximately 40 minutes.

References: [GOES-R: Air Mass RGB Quick Guide](https://rammb.cira.colostate.edu/training/visit/quick_guides/QuickGuide_GOESR_AirMassRGB_final.pdf)
4 changes: 2 additions & 2 deletions ...lt/common/config/metadata/layers/himawari/Himawari_AHI_Band13_Clean_Infrared.md
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Note: This layer is generally available for the **most recent 90 days**, though certain historical ranges are also preserved.

The Clean Infrared (10.3 um, Band 13) layer from the Advanced Himawari Imager (AHI) is useful for detecting clouds all times of day and night and is quite useful in retrievals of cloud top height. It is used to identify and classify cloud and other atmospheric features, estimate cloud-top brightness temperature and cloud particle size, convective severe weather signatures, and hurricane intensity. This infrared window is not strongly affected by atmospheric water vapor.
The Clean Infrared (10.3 um, Band 13) layer from the Himawari-9 Advanced Himawari Imager (AHI) is useful for detecting clouds all times of day and night and is quite useful in retrievals of cloud top height. It is used to identify and classify cloud and other atmospheric features, estimate cloud-top brightness temperature and cloud particle size, convective severe weather signatures, and hurricane intensity. This infrared window is not strongly affected by atmospheric water vapor.

The Himawari-8 satellite is centered on 140.7 degrees E, covering most of the Pacific Ocean, a portion of Eastern Asia, and parts of Australasia. The Himawari-8 AHI imagery is available on a rolling 90-day basis at 10 minute intervals. The sensor resolution is 2 km, the imagery resolution in Worldview/Global Imagery Browse Services (GIBS) is 2 km, the temporal resolution is 10 minutes, and the latency (time from satellite acquisition to availability in GIBS) is approximately 40 minutes.
The Himawari-9 satellite is centered on 140.7 degrees E, covering most of the Pacific Ocean, a portion of Eastern Asia, and parts of Australasia. The Himawari-9 AHI imagery is available on a rolling 90-day basis at 10 minute intervals. The sensor resolution is 2 km, the imagery resolution in Worldview/Global Imagery Browse Services (GIBS) is 2 km, the temporal resolution is 10 minutes, and the latency (time from satellite acquisition to availability in GIBS) is approximately 40 minutes.

References: [GOES-R: ABI Band 13 (10.3 um) Quick Guide](https://www.star.nesdis.noaa.gov/GOES/documents/ABIQuickGuide_Band13.pdf)
4 changes: 2 additions & 2 deletions ...lt/common/config/metadata/layers/himawari/Himawari_AHI_Band3_Red_Visible_1km.md
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Note: This layer is generally available for the **most recent 90 days**, though certain historical ranges are also preserved.

The Red Visible (0.64 um, Band 3) layer from the Advanced Himawari Imager (AHI) is used primarily to monitor the evolution of clouds throughout the daylight hours. It is also useful for identifying small-scale features such as river fog/clear air boundaries, or overshooting tops of cumulus clouds. It can also be used to identify daytime snow and ice cover, diagnose low-level cloud-drift winds, assist with detections of volcanic ash and analysis of hurricanes and winter storms.
The Red Visible (0.64 um, Band 3) layer from the Himawari-9 Advanced Himawari Imager (AHI) is used primarily to monitor the evolution of clouds throughout the daylight hours. It is also useful for identifying small-scale features such as river fog/clear air boundaries, or overshooting tops of cumulus clouds. It can also be used to identify daytime snow and ice cover, diagnose low-level cloud-drift winds, assist with detections of volcanic ash and analysis of hurricanes and winter storms.

The Himawari-8 satellite is centered on 140.7 degrees E, covering most of the Pacific Ocean, a portion of Eastern Asia, and parts of Australasia. The Himawari-8 AHI imagery is available on a rolling 90-day basis at 10 minute intervals. The sensor resolution is 0.5 km, the imagery resolution in Worldview/Global Imagery Browse Services (GIBS) is 1 km and the temporal resolution is 10 minutes, and the latency (time from satellite acquisition to availability in GIBS) is approximately 40 minutes.
The Himawari-9 satellite is centered on 140.7 degrees E, covering most of the Pacific Ocean, a portion of Eastern Asia, and parts of Australasia. The Himawari-9 AHI imagery is available on a rolling 90-day basis at 10 minute intervals. The sensor resolution is 0.5 km, the imagery resolution in Worldview/Global Imagery Browse Services (GIBS) is 1 km and the temporal resolution is 10 minutes, and the latency (time from satellite acquisition to availability in GIBS) is approximately 40 minutes.

References: [GOES-R: ABI Band 2 (0.64 um) Quick Guide](https://www.star.nesdis.noaa.gov/GOES/documents/ABIQuickGuide_Band02.pdf)