Topic:  GOES-16 and GOES-18 Software Build PR.13.01.00 Implementation


Date/Time Issued: October 24, 2023 1703 UTC

 

Product(s) or Data Impacted: GOES-16 & GOES-18 ABI Level 2 products

 

Date/Time of Initial Impact: November 21, 2023

 

Date/Time of Expected End: N/A

 

Length of Outage: N/A

 

Details/Specifics of Change: On November 21, 2023, the PR.13.01.00 software build will be placed into operations for both GOES-16 and GOES-18. This update will focus primarily on the Level 2 Cloud products, but some changes may affect other ABI Level 2 products. The paragraphs below describe the changes in greater detail.


Update data variable name in Cloud Particle Size product - Up to now, the Cloud Particle Size product produced by the Cloud Optical and Microphysical Properties (COMP) algorithm, has incorrectly listed its primary variable as “Particle Size Distribution” (PSD). This is being updated in this release to properly refer to the product as “Cloud Particle Size” (CPS), which will also make it consistent with its output filename (i.e. OR_ABI-L2-CPS*).


Addition of Cloud Type to ABI Cloud Top Phase -  Cloud Type is being added to the ABI Cloud Top Phase end product that will contain information on the types of ice clouds found in the scene. The table below shows a description of the types of clouds that are identified by the algorithm:

Category 

Description 

Value

Clear 

Confidently clear according to cloud mask 

0

Spare 

Spare 

1

Liquid Water 

Liquid water cloud with an opaque cloud  temperature greater than 273 K

2

Supercooled Liquid Water 

Liquid water topped cloud with an opaque cloud  temperature less than 273 K

3

Mixed Phase 

High probability of containing liquid water and  ice near cloud top

4

Optically Thick Ice 

High emissivity ice topped clouds with an  infrared optical depth greater than 2.0

5

Optically Thin Ice 

Ice clouds which have an infrared optical depth  of about 2.0 or less

6

Multilayered Ice 

Semi-transparent ice cloud overlapping a lower,  opaque cloud layer

7

Cloud type could not be  determined

Unable to determine cloud phase due to bad  input data

8


Change to use new surface type dataset - The static surface type data that is used in the processing of many of the ABI Level 2 algorithms is being changed from the UMD dataset to a dataset based on the VIIRS-derived surface type, which is updated annually. While large-scale differences are not anticipated, this does have the potential to introduce slight differences to products that use the outgoing UMD version. One benefit of this dataset is that it will capture more islands, including Hawaii. This change was made previously for the Fire Hot Spot algorithm only.


Fix missing blocks in Cloud Height and COMP products - a product generation issue that was causing missing blocks to appear in the Mesoscale 1 scene for the following products produced by the Cloud Height and COMP algorithms has been addressed:


Contact Information for Further Information: Please email Steve Superczynski at stephen.superczynski@noaa.gov; ESPC Operations at ESPCOperations@noaa.gov or 301-817-3880  24x7

 

Web Site(s) for applicable information: N/A

 

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