# Presentation: 454755

## Global Land Surveys: GLS 2005 Status and GLS 2010 Planning

**Jeff Masek**
- NASA Goddard Space Flight Center
**John Dwyer**
- U.S. Geological Survey
- USGS Earth Resources Observation and Science (EROS) Center

## Global Land Survey Data Sets

- Partnership between USGS and NASA, in support of CCSP
- Support global assessments of land-cover, land-cover change, and ecosystem dynamics (disturbance, vegetation health, etc)
- Pilot project for routine global monitoring in LDCM era
- GLS 2005 primarily Landsat-7 ETM+ and Landsat-5 TM imagery, with ASTER and EO-1 ALI data as needed

**Global Land Survey Data Sets**

## GLS1975 - 2005 Release Schedule_x0002_

**GLS1975 - 2005 Release Schedule****_x0002_**

- Existing Geocover 1975, 1990, and 2000 data sets are being reprocessed to improve geometry (“GLS” standard)
- GLS2000 is complete and available except for ~9 regions that are being reprocessed to improve geometry
- GLS1975/1990 to be released by end of August (metadata details currently being worked)
- GLS2005:
-  Landsat-7 portion should be nearly complete by end of July
-  Landsat-5 portion should be complete by end of September
-  EO-1 processing TBD
- Official “due date” - December 31

## 3,792 GLS2005 images available for download as of 7/9/2008

- Missing areas include:
-   - Regions not yet processed (Australia, SAM, Greenland...)
-   - Landsat-5 selections (processed after August)
-   - Small regions where GLS2000 map base is being reprocessed

## GLS2005 Metadata: Sensor Choice

**Landsat 5: 2109****	****Landsat 7: 4658**

## Cloud Cover- Base Image

**ACCA average: 1.33%**

## NDVI-Base Image

**NDVI average: 0.914 (normalized)**
**NDVI average: 0.501 (raw)**

## Year Preference

**2004: 673****	****2005: 2485**	**2006: 2661****	****2007: 948**

## Area Coverage

**Area Coverage average: 0.977%**

## Acquisition Day of Year

## Part 2:  GLS 2010 Preparations

## Background

**Successful GLS2005 effort has stimulated interest in GLS2010 dataset development **
**The Group on Earth Observations (GEO) has defined three tasks that are complementary to GLS2010:  **
**Task DA-07-02, which includes a subtask to “Coordinate 2010 Dataset with Contributions from Available International Assets” **
**Task AG-07-03 “Global Mapping of Agricultural Areas at 30m...Undertaken at 5 year intervals for 2005 and 2010” **
**Task DA-07-03 “Virtual Constellations,” specifically the Land Surface Imaging (LSI) Constellation **

## Implementation Strategy

**International participation is strongly desired**
**Augment gaps in Landsat coverage**
**Provide data coverage for participating agency ground station footprints**
**Intensify regional collection of multi-sensor data**
**Landsat TM and ETM+ would be the “baseline” data sources and represent the U.S. contribution to the international effort**
**NASA and USGS have drafted MOU - waiting for signatures**
**Pursue international participation through the CEOS LSI Constellation Study Team **

## Data Compilation Strategy

**Landsat ETM+ and TM L1T data will be available at no cost**
**LASSI tool developed for GLS 2005 will assist high grading the USGS Landsat archive**
**International data collection**
**Contributions under LSI Constellation**
***Data purchase through commercial brokerage***
***Data purchase through agency to agency agreements***

## Combined Ground Station Network

## International Agreements

**Landsat 7**
**Indonesia (DKI) dropping back from full IC status due to L7 ETM+ bumper mode processing issues – focusing on LDCM**
**Landsat 5**
**China (KaShi) (through CAS/CEODE)**
**RSGS name change:  CEODE - ****Center for Earth Observation and Digital Earth**
**Certification passes ongoing**
**Minor updates to the agreement documents in work**
**State Department raised U.S.-China space & security relationship concerns**
**Making the case: Augmentation of **_**existing**_** cooperation and potential US civil and military value**
**Russia (Irkutsk, Magadan, Moscow) (through ScanEx)**
**2008 unlikely for full IC status turn-on (funding issues)**
**Potential GLS2010 participant (campaign station status)**
**Mexico (Chetumal) (through CONABIO)**
**No indication that Chetumal will extend past its current planned completion date of July 5 (funding issues)**
**Potential GLS2010 participant (campaign station status)**
**Kenya (Malindi) (through ESA)**
**May & September campaigns**
**Potential GLS2010 participant (campaign station status)**
**Australia**
**Working Landsat 5 NOAA novation letter **

## Current moderate-resolution imaging systems

**Current moderate-resolution imaging systems**

## Slide 18

## Slide 19

## Coverage Summary

**Landsat-7 can acquire global coverage (but with SLC gaps)**
**Between CBERS and AWIFS, only west Africa, central America, southern South America, and Greenland cannot be acquired**
**Adding Landsat-5 IGS and Campaign stations, only west Africa cannot be acquired **
**Chetumal campaign station critical**
**Russian campaign stations critical in the absence of AWIFS**
**Malindi station critical in the absence of CBERS and/or failure of CBERS to implement Africa network**

## Notional Timeline for Implementation

**Implementation Plan (Sept 2008)**
**Solicit international participation (Sept 2008)**
**Establish terms and formal agreements (January 2009)**
**Define GLS 2010 product specifications (Spring 2009)**
**Data collection (Spring 2009 - Fall 2010)**
**Compile metadata and browse (Fall 2010)**
**Perform scene selection (Winter 2010-11)**
**Initiate product generation (Spring 2011)**
**Provide web-enabled data access (Summer 2011)**

## Issues

**Data policy and redistribution**
**Levels of data processing and product specifications**
**Gap-filling of ETM+ SLC-off data**
**Data archive and distribution – centralized or distributed?**
**Instrument cross-calibration and generation of multi-instrument products**

##   Thank You

## Landsat 5 Ground Station Network

## Landsat 7 Ground Station Network

## Historical Stations

## Ground Station Identifiers

| Country | Location | Identifier | Satellite Rcvd |
| --- | --- | --- | --- |
| Argentina | Córdoba | COA | L5, L7 |
| Australia | Alice Springs | ASA, ASN | L5, L7 |
| Australia | Hobart | HOA | L5, L7 |
| Brazil | Cuíaba | CUB | L5 |
| Canada | Gatineau | GNC | L5 |
| Canada | Prince Albert | PAC | L5 |
| China | Beijing | BJC | L5 |
| China | KaShi | KHC | L5 |
| Italy (ESA) | Matera | MTI | L5 |
| Indonesia | Parepare | DKI | L7 |
| Japan | Hatoyama | HAJ | L5 |
| Japan | Hiroshima | HIJ | L7 |
| Kenya (ESA) | Malindi | MLK | L5* |
| Mexico | Chetumal | CHM | L5* |

- * Campaign Station

## Ground Station Identifiers

| Country | Location | Identifier | Satellite Rcvd |
| --- | --- | --- | --- |
| Norway | Svalbard | SGS | L5, L7 |
| Russia | Irkutsk | IKR | L5* |
| Russia | Magadan | MGR | L5* |
| Russia | Moscos | MOR | L5* |
| South Africa | Hartebeesthoek | JSA | L5 |
| Spain (ESA) | Maspalomas | MPS | L5* |
| Sweden (ESA) | Kiruna | KIS | L5 |
| Thailand | Bangkok | BKT | L5 |
| U.S.  | Gilmore Creek, AK | GLC | L5* |
| U.S.  | Poker Flats, AK | AGS | L5, L7 |
| U.S. | Poker Flats, AK | PFS (PF1, PF2) | L5, L7 |
| U.S. | Sioux Falls, SD | LGS | L5, L7 |
| U.S. | Univ. of Puerto Rico | UPR | L7 |

- * Campaign Station