News

September 2014

    Landsat TreeCover Version 2 released Landsat TreeCover Version 2 released

    We are proud to release version 2 of the Landsat TreeCover product. V2 data has the missing tiles filled, and we have also added TreeCover data for 2005. Therefore, a total of 15,161 tiles have been processed and ingested. Previous versions of the TreeCover dataset have been deprecated and are only available via FTP. For more information regarding this product, please visit TreeCover data and product pages.

August 2014

June 2014

May 2014

April 2014

February 2014

January 2014

December 2013

    Landsat Tree Cover 1.0 released Landsat Tree Cover 1.0 released

    The GLCF is proud to release the improved version of the Landsat based Tree Cover dataset version 1.0. Upon receiving positive feedback from various users worldwide, we modified our algorithm to improve the handling of errors propagated via MODIS VCF data and improved our tree cover estimation in scenes dominated by water, mostly coastal regions. For more information regarding this dataset, please visit the Landsat based tree cover data and products page.
    Landsat Surface Reflectance Version 2 released Landsat Surface Reflectance Version 2 released

    GLCF launches version 2.0 of the Global Land Survey (GLS) based Landsat surface reflectance (SR) earth science data record (ESDR). The new version of data should be available via ESDI and FTP. The previous version of the GLS 2000 and 2005 data collection (18129 scenes) has been marked Replaced in ESDI. Version 1 of the GLS SR ESDR will be available via FTP for a month and subsequently deleted.

    Since the last version, the 6S aerosol retrieval algorithm was improved to better match MODIS collection 5, which is more accurate over bright surfaces, primarily arid areas. However, saturation still exists over the brightest, snow-covered surfaces. The 6S atmospheric pressure correction scheme was also changed to incorporate NCEP/NCAR reanalysis sea level pressure data.

    Smaller, incidental changes include removing a corrupted image for May 12, 2000 of WRS-2 Path 159, Row 51 and ensuring proper radiometric calibration. Proper calibration was ensured by improving handling of input image metadata, including calculating gains using LMIN and LMAX values from the image metadata rather than the gain values reported in the metadata directly.

September 2013

    NSF funding awarded NSF funding awarded

    GLCF in collaboration with Mid-Atlantic Crossroads (MAX) was awarded National Science Foundation grant on the project titled "CC-NIE Integration: High- Performance Computing with Data and Networking Acceleration (HPCDNA)." The project will enhance GLCF's existing capability for large scale data processing of remotely sensed data for improved land cover and land use change analysis and data production. For more information see MAX's press release.

July 2013

    NASA funding awarded NASA funding awarded

    GLCF in collaboration with PNNL was awarded the NASA program entitled Development and Testing of Potential Indicators For The National Climate Assessment for the joint proposed activity "Land Cover Indicators for U.S. National Climate Assessments". For more information about the project please visit the research portal.
    Landsat VCF Tree Cover in ESDI Landsat VCF Tree Cover in ESDI

    The Landsat VCF Tree Cover Dataset made available in May via FTP is now available in ESDI for user to search, browse and download. This enables users to search data via path/row, by location, or by drawing your area of interest, allowing quick search and access capability. For more information about using ESDI please read the ESDI help section.

June 2013

May 2013

April 2013

January 2013

    ESDI Offline ESDI Offline

    The services provided by the Earth Science Data Interface (ESDI) portal are currently offline due to technical difficulties. We are currently working on restoring ESDI, and appreciate your patience.

December 2012

    GLCF services temporarily offline GLCF services temporarily offline

    On December 6, GLCF services will be temporarily offline from 9:00 am - 3 pm EST. Please be advised that during this time the ESDI portal and our FTP site will be offline, however our website will continue to be available. We thank you for your patience and apologize in advance for any inconvenience this might cause you or your organization.

November 2012

October 2012

    USGS funding awarded USGS funding awarded

    GLCF has signed a contract with the USGS Chesapeake Bay Program to map impervious surface changes in Maryland and Delaware from 1985 to 2010. This map, at 30-m resolution and annual frequency, will be the most accurate, finest-resolution database of urbanization ever recorded at this spatial extent and/or temporal span.

September 2012

    Over two petabytes distributed Over two petabytes distributed

    GLCF successfully distributed 2 petabytes of data to its user community! The GLCF team takes pride is providing the data support and distribution capability to its users worldwide and looks forward in continuing the support for years to come. If you/your organization has benefited from our services provided by the GLCF, please take the time to directly email us or use the online tool here informing us how your organization has benefited from our work or just click the new Facebook Like button on our front page!

August 2012

July 2012

    ESDI Offline ESDI Offline

    The services provided by the Earth Science Data Interface (ESDI) portal are currently offline due to technical difficulties. We are working on it, however, at this point we do not know how long it will take to restore ESDI back to its full functionality. We apologize for any inconvenience and appreciate your patience.

May 2012

April 2012

    GLCF attends LCLUC GLCF attends LCLUC

    The GLCF team participated at the NASA Land Cover - Land Use Change annual meeting, Rockville, MD. The GLCF presented its current research activites on:
    • Presentation: Using Landsat Global Land Survey Data to Measure and Monitor Worldwide Urbanization
    • Presentation: Three decades of change in the Americas
    • Poster: Quality Characteristics of the NASA-USGS Global Land Survey (GLS) Datasets
    • Poster: Fine Scale Assessment of Forest Cover Change over South America using Landsat Data
    • Poster:Continuous fields of impervious cover at annual resolution: urbanization of the Washington, D.C - Baltimore, MD metropolitan region from 1984 to 2010

March 2012

    GLCF attends AAG GLCF attends AAG

    The GLCF participated at the AAG meeting in New York, NY, where we gave a presentation on "Urbanization of the Washington DC - Baltimore metropolitan area between 1984 and 2010 from dense time series of satellite imagery"

January 2012

August 2011

    GLCF Offline GLCF Offline

    The GLCF will be offline from August 5 at 6pm EST till August 6, 6PM EST. The data center where GLCF is housed in is having a scheduled maintenance which will impact all the service that GLCF facilitates. All GLCF related services, including the web interface and FTP servers will be offline. We apologize for the inconvenience.

June 2011

    GLCF attends GOFC-GOLD meeting GLCF attends GOFC-GOLD meeting

    Sexton participates in the GOFC-GOLD and CEOS WGCV Land Product Validation expert meeting: "Global land cover validation and accuracy assessment for land cover change and area estimates: updates, progress, and next steps" at the Institute for Applied Systems Analysis (IIASA), Laxenburg, Austria.

April 2011

    Data distrbution record broken Data distrbution record broken

    This month the GLCF broke its records of data volume distributed in a month. The GLCF distributed 19.3TB of data! Our previous records was 15.14 TB set on October of 2009. We are excited to know that our efforts and helping users worldwide. If you/your organization has benefited from our services provided by the GLCF, please take the time to directly email us or use the online tool here informing us how your organization has benefited from our work.

March 2011

    NASA Funding Awarded NASA Funding Awarded

    GLCF, in collaboration with the USGS Southwestern Biological Research Station, Utah State University, Smithsonian Environmental Research Center, and Max Planck Demographic Institute, awarded a NASA Biodiversity grant to study biological responses to climate in the Inter-mountain Western United States, "Spatial Responses to Climate Across Trophic Levels: Monitoring and Modeling Plants, Prey, and Predators in the Intermountain Western United States".
    Maryland SeaGrant Awarded Maryland SeaGrant Awarded

    The GLCF, in collaboration with Matthew E. Baker in the Department of Geography and Environmental Systems at the University of Maryland, Baltimore County, awarded funding from Maryland SeaGrant to map impervious surface changes in the Washington, DC - Baltimore, MD metropolitan area from 1984 to 2010. For more information about this project please visit the project website.

January 2011

December 2010

    GLCF at the 2010 Fall AGU Meeting GLCF at the 2010 Fall AGU Meeting

    GLCF team members participated at the 2010 Fall AGU Meeting in San Francisco, CA, December 13-17, 2010. The GLCF presented its research activities from the GFCC MEaSUREs project, topics were:
    • Presentation: Toward global baselines and monitoring of forest cover for REDD: the Global Forest Cover Change project.
    • Poster: Achieving improved understanding of global forest distribution: a synthesis of global and regional land cover products.
    • Poster: Global Landsat Surface Reflectance Products derived using GLS2000 and GLS2005 images.

November 2010

October 2010

August 2010

    University Scheduled Downtime University Scheduled Downtime

    The University is going to have a scheduled outage at which point the data center where GLCF servers are housed will be impacted. Therefore, we are scheduling our downtime where all GLCF related services, including the web interface and FTP servers will go offline at 5pm on the 13th of August. All the services will be restored by 9am on 16th of August. We apologize for any inconvenience and thank you for your patience.

July 2010

May 2010

    GLSDEM product now available GLSDEM product now available

    The Digital Elevation Model (DEM) used for orthorectification of the Global Land Survey (GLS) datasets- GLSDEM, is now available for download via FTP. The data are available both in 1 deg tiles, Geographic projection and in WRS-2 tiles, UTM projection. The spatial resolution of the GLSDEM product is 90 meter, for more information regarding the GLSDEM please visit the GLSDEM data pages.

April 2010

    GLCF at the NASA LCLUC meeting GLCF at the NASA LCLUC meeting

    GLCF team members attended and presented posters at the NASA Land Cover Land Use Change (LCLUC) 2010 meeting held in Bethesda,MD from April 20-22. The posters reflect current research progress on global forest cover change projects, sponsored primarily by the NASA LCLUC, MEaSUREs and ASTER programs. The posters are available on the Library pages for viewing.
    GLCF at the annual AAG meeting GLCF at the annual AAG meeting

    GLCF team members attended and presented posters at the Association of American Geographers (AAG) 2010 meeting in Washington DC. The posters reflect current research progress on a global forest cover change project sponsored primarly by the NASA MEaSUREs program. Posters are available on the Library webpage.
    GLCF System Maintenance GLCF System Maintenance

    In order to provide better service to our users, GLCF will be performing some system maintenance. All GLCF related services, including the web interface and FTP servers will be offline from 5pm, April 16 2010 to 2pm, April 18 2010 (EST). We apologize for any inconvenience.

March 2010

    GLCF services restored GLCF services restored

    We have successfully migrated our data center and have brought back all of our services. We apologize for any inconvenience the downtime might have caused and thank you for your patience.

February 2010

    GLCF services temporarily offline GLCF services temporarily offline

    The GLCF is in the process of physically migrating its offices and data center over the next few days. Please be advised that during this time the ESDI portal will be offline, however our website and our data archive (via FTP) will continue to be available. We thank you for your patience and apologize in advance for any inconvenience this might cause you or your organization.

January 2010

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