U.S. Department of the Interior

U.S. Geological Survey

Landsat Program Update

October 2005

Presented By:

U.S. Geological Survey, Center for EROSSioux Falls, SD

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Agenda

Landsat Archive Conversion Update Landsat 5 Data over Alaska Current Stations IGS Metadata WBVT Orphans

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Landsat Archive

Landsat 1-5 Data Over 9000 tapes in

basement archive Multiple tape formats

Landsat 7 Data Near-line silo 9940B tape technology

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LACS System - Objectives

Objectives Preserve Landsat Archive for Long Term Provide Efficient Access to Archived Data

Convert Data From DCT, HDT, and RCC to User-friendly Format

Store Formatted Data on Computer-compatible Tape Generate Browse Imagery Generate Scene and Interval Metadata Maintain Database of Metadata Retain Historical Information, Including Status

Provide Faster Availability of New L5 Data

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LACS Development

Original Plan Transcribe archive tapes to off-line digital media Duplicate new media for off-site storage

Current Operations Transcribe archive tapes to near-line archive silo

Combines 1-5, 7 Into Single Architecture, Reduces Duplicate Processes, and Consolidates Management

Keep working copy of data in silo Keep raw copy of data (to be put off-site in future) Provides Similar Turnaround Time to Landsat 7 Improved browse, metadata, and automated cloud cover

assessment similar to Landsat 7

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Landsat Archive Conversion System

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Transcription Duration Estimate

Data Type Data Quantity Transcription Duration

TM-R New Data Ongoing

TM-R4,781 HDTs (~24 TB)

3,431 DCTs (~147.5 TB)

COMPLETE

1,946 COMPLETE (57%)

TM-A 108 DCTs (3.6 TB) Est. Completion in FY06

MSS-A 277 DCTs (9.5 TB) Est. Completion in FY06

MSS-P 118 DTS (3.2 TB) Est. Completion in FY06

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Landsat 5 Data over Alaska

Established Quid Pro Quo agreement with University of Alaska Geographic Information Network of Alaska (GINA) and NOAA/NESDIS Fairbanks Command & Data Acquisition Station (FCDAS)

Data received at FCDAS (at Gilmore Creek just outside Fairbanks, AK)

Transmitted by GINA via high speed network to EROS for processing

Agreement is year-to-year Discussions with GINA indicate willingness to continue

agreement for next growing season

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Sheenjek Fire near Fort Yukon

On June 21, 2005, Landsat 5 captured this scene of the Sheenjek River fire near Fort Yukon, Alaska

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Landsat Global Network

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U.S. Landsat Archive Overview(Marketable Scenes through September 30, 2005)

ETM+: Landsat 7 497,969 scenes 450TB RCC and L0Ra Data Archive grows by 300GB Daily

TM: Landsat 4 & Landsat 5 621,988 scenes 171TB of RCC and L0Ra Data Archive Grows by 30GB Daily

MSS: Landsat 1 through 5 641,555 scenes 20TB of Data

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L5 TM U.S. Global Archive Density

Through Sept 30, 2005

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L7 ETM+ U.S. Global Archive Density

Through Sept 30, 2005

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L5 TM U.S. Archive – Best CCA(Manually Assessed Through June 2004; Automated Since Then)

Through Sept 30, 2005

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L7 ETM+ U.S. Archive – Best ACCA

Through Sept 30, 2005

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L1-5 U.S. Archive Utilization(Difference Between Order and Acquisition Dates)

Balanced Usage Illustrates the Value of the Historical Archive

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L7 U.S. Archive Utilization(Difference Between Order and Acquisition Dates)

Balanced Usage Illustrates the Value of the Historical Archive

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IGS Metadata

Landsat 7 Metadata Currently ingesting Landsat 7 records from NASA Land

Processes Distributed Active Archive Center (LPDAAC) Search of metadata is available through EarthExplorer

Landsat 1-5 Metadata Working with current stations to collect metadata of ALL

Landsat holdings Discussed with stations in April 2005 at Landsat Technical

Working Group meeting November 2005 – Landsat Ground Station Operators

Working Group (LGSOWG) Will discuss plans with stations to collect metadata Draft metadata format for transfer is in work

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EarthExplorer Search Capability

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MSS Reception at IC Stations

YR727374757677787980818283848586878889909192

KEY: ASA BJC BKT FUI GNCCOA CPE CUB DKI HAJ IRAN ISP JSA SGI SHOE LSAT 1

LSAT 2

LSAT 3

LANDSAT 4

LANDSAT 5

KIS MPS PAC

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TM Reception at IC Stations

YR

828384858687888990919293949596979899000102030405

KEY

ASA

BIS

BJC

BKT

CLT

COA

CPE

FUI

GNC

HAJ

CUB

DKI

DUB

HIJ

HOA

ISP

JSA

ULM

OHA

PAC

RSA

SEK

LANDSAT 4

LANDSAT 5

LSAT 7

SGI

MTI

NRK

NSG

KIS

LBG

MPS

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Wide-Band Video Tape (WBVT)

Data Transcribed but Not Available Due to a processing issue, over 160,000 scenes are

unavailable Working on a fix with MDA to correct problem

Orphan Data Issue Approximately 5TB of data are unavailable for ordering Due to lack of ancillary data (such as telemetry of the

spacecraft) for many scenes, there is no way to identify the scene location of the data

Working on a process to frame the data and provide location information (?FY06 – still in planning stages)