# Presentation: 157118

## Rich Hucek
December 17, 2001

***December 17, 2001***

- PGE FRAMEWORK
-  AND
- STATUS OF AQUA DATA PROCESSING

## ATMOSPHERE PGEsIN OPERATIONS(Level 2)

_**	**__**	**__**	**__**	**__**	**_
** **_**PGE                                 VERSION                 CHANGE**_

**PGE03**
**    ****Cloud Mask/Profiles        v3.0.0/24 May 01         Collection 3**
**PGE04**
**     ****Aerosol/Water Vapor     v3.0.2/07 Nov 01          Linux compatibility**
**PGE06 **
**     ****Cloud Product                 v3.0.5/09 Nov 01         Enable cloud optical ****	****	****	****	****	****                   retrieval over snow ****	****	****	****	****	****	****      and sea ice**
**                                                                       **
**          **

## ATMOSPHERE PGEsIN OPERATIONS(Level 3)

**PGE69****                 v3.0.2/27 Nov 01               Production Rules**
**    ****Tiling                                                          (Ops efficiencies)**
**PGE56****                v3.0.2/25 Oct 01                 Linux compatibility         **
**    ****Daily**
**PGE70 ****               v3.0.2/25 Oct 01                 Linux compatibility           **
**    ****8-Day**
**PGE57                v3.0.2/25 Oct 01                 Linux compatibility**
**    ****Monthly**

_**	**__**	**__**	**__**	**__**	**_
**           **_**PGE                   VERSION                        CHANGE**_

## CODE AND PGE UPDATE PLANS

**Cloud Mask (PGE03 V3.1.0)**
- shallow water; use 1-km cloud mask as ancillary input to 250-m mask; better use of saturated band 2 data
**Cirrus Detection (PGE06 V3.1.0)**
- water vapor transmittance above cirrus clouds is estimated using a single “slope” approach
**Aerosol (PGE04 V3.l.0)**
- new logic to eliminate cirrus over ocean; extend land retrievals in blue beyond 2.1 reflectance; shift range of “kept land pixels” percentiles above 10 - 40%

## CODE AND PGE UPDATE PLANS CONTINUED

**Aerosol (PGE04 V3.2.0)**
- dust non-sphericity; add “median value” SDS; push ocean algorithm closer to glint
**Profiles (PGE03 V3.2.0)**
- update regression coefficients; Aqua compatibility
**Cloud Top Properties (PGE06 V3.2.0)**
- robust interpolation across NCEP dry layers; Aqua compatibility

## AQUA CODE STATUS

**Aqua metadata in place for all PGEs**
**Single code version supports both Terra and Aqua for all PGEs**
**UW Aqua algorithms in development**
- code switches used to toggle between Terra and Aqua processing paths
- code delivery to SDST expected first week of February 2002
- Aqua MOSS-6 dry run 8-hour test successful

## PORTING TO LINUX

**Strategic Plan**
- use less expensive Linux processors as a means of increasing processing capacity
- PGEs with large CP_x0008_U requirement or lengthy processing times to run on Linux.  This includes L2 PGEs for all disciplines
**Time Frame**
- Level 2 PGEs Linux compatible by end of January 2002
- V3 system ready by March 2002

## Hybrid V3 System

**SGI Origin**
**3000**

**1**

**1**

**Linux Minions**

**. . . . .**

** ****. . . . . . . . . . . . .**

**32**

**2**

**35**

**2**

**1**

**1 TB Archive Disks**

**Gigabit Ethernet**

**1**

**1**

## LINUX COMPARSION REPORTS

**Ocean Aerosol**
- differences in selection of aerosol model a concern
**NIR Water Vapor**
- differences within noise level
**Cloud Top Properties**
- small number of differences compared to number of no difference
**Cirrus Detection**
- a few scenes show spatial features above noise level