# Presentation: 690283

## MODIS Science Team Meeting

- Atmospheres Discipline Breakout
- December 17, 2001
- Status of MODIS Data Processing
- Bill Ridgway
- SSAI /  NASA GSFC

## Amount of L1B data archived at the GES DAAC from February 2000 to November 2001. 

**Amount of L1B data archived at the GES DAAC from February 2000 to November 2001. **

## Availability of MODIS Level 2 Atmospheres Cloud Products as of November 29, 2001 3:00PM

**Availability of MODIS Level 2 Atmospheres Cloud Products as of November 29, 2001 3:00PM**

## MODIS Data Volume Summary (GB/day)Based on CPS (Current Product Set)

- _Product Type__	__(1X)__	__ (3X)__	__made__	__	__archived and/or shipped_
- L0			70	70	EDOS		GES DAAC archive
- L1A		110	330	GES DAAC	GES DAAC archive
- L1 subsets	48	144	GES DAAC	(Langley & Miami)
- L1B+		210	630	GES DAAC	MODAPS
- L2/L3+		430	1290	MODAPS 	3 DAAC's
**total****	****	****870****	****2470****	****(total archived,  all levels, all DAAC’s)**
- L2/L3 interim	378	1134	(QA and temporary products not archived)

## Processing Challenges

- Product volume and algorithm complexity
- Coordinating processing among organizations
- Repairing production system flaws after software installs
- Limited redundancy in key processing components
- Difficulty in monitoring production, file transfer, and product archival across organizational boundaries
- Scheduling processing and reprocessing consistent with algorithm readiness and science requirements

## Atmospheres Processing Flow & Product  Volumes

_**GDAAC Data Products**_
- _Total Volume: 210 GB/day_
- _Total Files: 1730/day (granule)_
- Level 1B, 1km: 73 GB/day
- Level 1B, 0.5km: 47 GB/day
- Level 1B 0.25km: 49 GB/day
- Geolocation: 17 GB/day
- Cloud Mask: 14 GB/day
- Vertical Profiles: 9 GB/day
- Ancillary Data: < 1 GB/day

_**Level 2 Atmospheres Products**_
- _Total Volume: 18 GB/day_
- _Total Files: 720/day (granule)_
- Aerosol parameters: 2GB/day
- Water vapor, etc: 3GB/day
- Cloud parameters: 13GB/day

_**Intermediate Tiled Product**_
- Total Volume: 2 GB/day
- Total Files : 72/day (tiles)
*(output of A2 not archived)*

_**Daily Atmospheres Product**_
- Total Volume: 2 GB/day
- Total Files: 2/day (global)

_**8-Day Atmospheres Product**_
- Total Volume: 1 GB/week
- Total Files: 1/week (global)

_**Monthly Atmos. Product**_
- Total Volume: 1 GB/month
- Total Files: 1/month (global)

- A1

- A3

- A4

- A5

- A2

## Slide 7

## GDAAC Production of MODIS Data Daily Average Volume by Month of Production February 2000 to November 2001

**GDAAC Production of MODIS Data Daily Average Volume by Month of Production February 2000 to November 2001**

## GDAAC Ingest of MODAPS Data February 2000 to November 2001. Horizontal line illustrates the average daily volume based on the 1X of the Current Product Set (CPS) volume. 

**GDAAC Ingest of MODAPS Data February 2000 to November 2001. Horizontal line illustrates the average daily volume based on the 1X of the Current Product Set (CPS) volume.**** **

## DAACs

- 100Mbytes/sec

- HiPPI channel 800MB/sec

- 35TB RAID in
- 35 filesystems

- 4 Fibre Channels
- 100Mbytes/sec

- Gigabit Ethernet
- to 100baseT

- 32 Linux systems
- Dual Pentium 3
- 2GB RAM
- 200GB RAID

- Level 2 - Level 3
- Daily Land and
- Atmosphere
- Processing

- Gigabit Ethernet
- 100MB/sec

- Science Team, Development and Test Systems

- 4 Pentium III cpu’s
- Database Server
- Running Linux

**The hardware architecture of MODAPS V3, **
**currently being tested on the SGI Origin 3000. **