# Presentation: 801470

## Aura Science MeetingData Systems Working Group HIRDLS SIPS StatusOctober 27, 2008

**Vince Dean, Brendan Torpy, Greg Young**
**Univ. of Colorado, Boulder**
**Cheryl Craig**
**NCAR**

## Outline

**Instrument Status**
**Processing Status and Data Releases**
**SIPS Status**
**Useful Links**

## HIRDLS Instrument Status

**Chopper Anomaly**
**March 17, 2008 **
**HIRDLS chopper stopped rotating**
**Cannot collect radiance data**
**Rest of instrument continues to function**
**We continue with automatic attempts to restart the chopper every 4 minutes**
**Exploring other options to restart**

## HIRDLS Processing Overview

## HIRDLS Processing Summary

**Version 3 – HIRDLS version 2.04.09 (Level 2 Swaths)**
**O3, HNO3, Temperature, Cloud Top Pressure**
**Public release November 2007**
**Delivered 1012 days of data to Goddard DISC**
- 2005-01-23 through 2007-12-12
**Version 4 – HIRDLS version 2.04.19 (Level 2 Swaths)**
**Adds CFC-11, CFC-12, and Extinction at 12.1 microns**
**Public release August 2008**
**Delivered 1025 days of data to Goddard DISC**
- 2005-01-22 through 2008-01-01
**Future plans**
**Algorithm enhancements working toward retrieval of more species, with near-term efforts concentrating on water vapor and methane.**
**Possible Level 3 products**
**Investigate radiance creep in January-March 2008 and determine if there are issues with using the data**

## Use of GEOS-5 data

**HIRDLS uses GEOS-5 data for line of sight gradient corrections.**
**Next HIRDLS processing version will use GEOS-5 geopotential height at 50 mb as the starting point for our geopotential height product**

| GEOS-5 version | Starts | Ends | HIRDLS versions using |
| --- | --- | --- | --- |
| 0.1 | ... | Jan 3, 2008 | v3 and v4 |
| 1.0 | ... | Oct 2, 2008 | Future versions |
| 2.0 | Aug 14, 2008 | ongoing | Does not overlap current HIRDLS science data |

## HIRDLS SIPS System

**Data Management System**
**3 Dell Power Edge 2950 machines - Centos 5 Linux**
**Java/MySQL web-based application**
**Processing and data store**
**SGI Altix 3000-series 80-processor Itanium – SUSE Linux Enterprise**
**160 GBytes of memory**
**30 TBytes of online RAID storage**
- (mirrored to identical disks in another building)
**Projected annual data growth**
**Subscriptions:  934 GBytes**
**Derived products:  8600 GBytes**
**Planned expansion**
**10 TBytes additional RAID**

## SIPS Statistics

**Data files**
**1,600,000 files**
**21 TBytes**
**Versions of processing modules**
**803 distinct versions installed**
**Most are for computational experiments**
**Processing tasks**
**129,000 distinct processing tasks executed**
**Full audit trail**

## HIRDLS SIPS Software

**Large-scale reprocessing, usually a few per year.**
**Improved scheduling strategy increases throughput.**
**Support for scientific experiments within SIPS system**
**Experimental runs with multiple versions of processing modules.**
**Number of processing steps and intermediate files continues to increase.**
**Support for multiple processor and file versions**
**Perhaps our greatest contribution to the science team. **
-  Strict traceability of thousands of experiments
**... ****and perhaps our biggest operational headache. **
- Complex versioning is daunting to users.
**New interfaces provide selected, simplified views for science users.**

## HIRDLS Links

**HIRDLS at Goddard DISC**
**Data access**
**Data quality documents**
_**[http://](http://disc.sci.gsfc.nasa.gov/Aura/HIRDLS/index.shtml)**__**[disc.sci.gsfc.nasa.gov/Aura/HIRDLS/index.shtml](http://disc.sci.gsfc.nasa.gov/Aura/HIRDLS/index.shtml)**_
**HIRDLS at UCAR**
_**[http://](http://www.eos.ucar.edu/hirdls/)**__**[www.eos.ucar.edu/hirdls](http://www.eos.ucar.edu/hirdls/)**__**[/](http://www.eos.ucar.edu/hirdls/)**_
**HIRDLS at Oxford University**
_**[http://](http://www.atm.ox.ac.uk/hirdls/)**__**[www.atm.ox.ac.uk/hirdls](http://www.atm.ox.ac.uk/hirdls/)**__**[/](http://www.atm.ox.ac.uk/hirdls/)**_