# Presentation: 324683

## Landsat Archive

**1/9/2008**
**Presented By:**
**Kristi Kline, USGS**

## F$@# (“no cost”) Landsat Data

**FY08**
- Expansion of Landsat 7 SLC-off Data
- Follows schedule of GLS2000 reprocessing
- N. America, Caribbean, Africa, Madagascar, EurAsia, Australia, New Zealand, South America, Indonesia, Islands
- Re-processed GLS data (all dates)
- Partial processing of GLS2005 data
- Continued additions to MRLC data
**FY09**
- Completed on GLS2005
- Landsat 7 SLC-on
- Landsat 4/5 TM
**FY10 **
- MSS

## Work Still Needed for Expansion

**Completion of GLS2000 for ground control point library**
**Landsat 4/5 TM algorithms in LPGS**
**MSS Calibration**
**On-demand Standard Product flow**
**Rolling data pool**
**Outstanding Issues**
- Demand for media by non-U.S. customers
- Optimal amount of disk for data pool
- Bulk download – demand and optimal solution
- Reprocess any of the current data? How far back?

## Other Potential Work

**Full Resolution Browse  -- Eugene Fosnight**
**GeoRSS feed**
- Demo on 1-8-2008 by Mike Neiers
- Operational this year

## U.S. Landsat Archive Overview(Marketable Scenes through December 31, 2007)

**ETM+: Landsat 7**
- 786,700 scenes
- 730TB RCC and L0Ra Data
- Archive grows by 260GB Daily
**TM: Landsat 4 & Landsat 5**
- 734,627 scenes
- 368TB of RCC and L0Ra Data
- Archive Grows by 40GB Daily
**MSS: Landsat 1 through 5**
- 649,423 scenes
- 19TB of Data

## U.S. Landsat Archive Details(Marketable Scenes through December 31, 2007)

*** DLTs to be converted to 9940B.**

| Satellite | Sensor | Date Range | Data
Format | Scenes | Volume | Media |
| --- | --- | --- | --- | --- | --- | --- |
| L1 - 3 | MSS | Jul 23, 1972 – Sep 7, 1983 | MSS-X | 199,319 | 6.01 TB | DLT 7000* |
| L2 - 3 | MSS | Jan 22, 1975 – Sep 7, 1983 | MSS-P, RCC | 61,601 | 1.82 TB | 9940B |
| L2 - 5 | MSS | Jan 22, 1975 – Oct 15, 1992 | MSS-A, RCC | 261,103 | 7.96 TB | 9940B |
| L4 | TM | Aug 17, 1982 – Nov 18, 1993 | TM-A, TM-R, RCC | 58,098 | 29 TB | 9940B |
| L5 | TM | Mar 1, 1984 – Current | TM-A, TM-R, RCC | 676,529 | 339 TB | 9940B |
| L7 | ETM+ | Apr 15, 1999 – Current | L0Ra, RCC | 786,700 | 730 TB | 9940B |
|  |  |  |  | 2,043,350 | 1,113 TB |  |

## Definitions of Data Formats

**MSS-X**
- AKA: Wide Band Video (WBV) which is technically a media type not a data format
- Data have been radiometrically corrected for detector gain and bias values.
- Not available through LAM/LACS
- Calibration data is available
- Archived on a scene-by-scene basis
- The data was reformatted from Band Interleaved by Pixel Pair (BIP2) to the band sequential format (BSQ) we now call MSS-X.
**MSS-P (P means “processed source”) **
- Data have been corrected for system radiometric and geometric  distortion.
- No Calibration Data available
- Archived on a scene-by-scene basis
**MSS-A (A means “archive source”) **
- data have been radiometrically corrected for detector gain and off set.
- Calibration Data Available
- Archived on a scene-by-scene basis
**TM-A (A means “archive source”) **
- Data have been radiometrically corrected for detector gain and off set.
- Archived on an interval basis
**TM-R (A means “Raw source”) **
- Data have been corrected for system radiometric and geometric distortion.
- Archived on an interval basis
**ETM+  **
- data have been reformatted for scanning pattern, detector arrangement and detector offsets.
- Archived on an interval basis

## Landsat Off-site Archive

## Other On-going Work	

**Move Archive from Powderhorn Silo to SL8500: Summer 2008**
- Old archive silo reaching obsolescence soon
- Will share new archive unit with other projects at EROS
**Metadata Initiatives**
- LMDD
- Implemented this year
- Standardizes archive metadata across Landsat missions
- Collection of IC metadata from current/past missions
**Recovery of “Orphan” Wide-band data**

## Calibration Efforts	

**L5 TM is now included in CPFs for LPGS**
**L4 TM Calibration in IAS Q4 FY2008**
**MSS Calibration 2009**