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BUILDING GEOSS

Becoming a GEONETCast User

By Sally Wannop, User Relations Manager, EUMETSAT; Linda Moodie, GEONETCast Point of Contact; Christopher O’Connors, Direct Services Division Chief, NOAA; and Jiashen Zhang, China Meteorological Administration

GEONETCast is a global, near-real-time, environmental data dissemination system in support of the Global Earth Observation System of Systems (GEOSS). It uses commercial telecommunication satellites to broadcast data and products to a wide User community. GEONETCast is particularly useful for distributing operational or project data where a large number of users can benefit and/or where Internet access has low bandwidth or is non-existent.

The goal of the system is to enable the enhanced dissemination, application, and exploitation of environmental data and products for the diverse societal benefits defined by the Group on Earth Observations (GEO), including agriculture, energy, health, climate, weather, disaster mitigation, biodiversity, water resources, and ecosystems.

The system consists of three regional broadcasts: EUMETCast (operated by the European Organization for the Exploitation of Meteorological Satellites (EUMETSAT), covering Europe, Africa, and parts of Asia and the Americas), FENGYUNCast (operated by the China Meteorological Administration, covering Asia and parts of the Pacific), and GEONETCast Americas (operated by the US National Oceanic and Atmospheric Administration (NOAA), covering North, Central, and South America and the Caribbean. The coverage of GEONETCast is illustrated in Figure 1.

GEONETCast coverage

Fig. 1 GEONETCast footprints

 

Access to GEONETCast reception is open to any User within the footprint of one or more of the GEONETCast beams. Whilst standard Digital Video Broadcasting (DVB-S) technologies are generic to all three GEONETCast systems, there are some subtle differences between the systems which influence the reception station set-up. Likewise, each GEONETCast Network Centre (GNC), responsible for the operation of its own regional broadcast, applies a slightly different approach to User registration and data access.

To ease User access, each Network Centre provides comprehensive information about its system and registration process via its website. A single catalogue listing the contents of data streams, the GEONETCast Product Navigator, is available and is disseminated via the GEONETCast broadcasts.

 

The GEONETCast system

The GEONETCast system has been designed to utilise off-the-shelf technology which support cost-effective and affordable data delivery to a wide User audience ranging from the man in the street to research institutes and government agencies. Features of the GEONETCast system include:

  • Use of off-the-shelf, commercially available, DVB-S reception equipment
  • Highly scalable system architecture
  • One-stop-shop delivery mechanism allows Users to receive many data streams via one reception station
  • An installed User base of over 3,000 User stations worldwide
  • Handling of any file format, allowing the dissemination of a broad range of products

Data files generated by GEONETCast data providers are transferred to the GEONETCast uplink facility. These files are encoded and transmitted to geostationary communications satellites for broadcast to User receiving stations. Files are sent over the system organized into a series of sub-channels, similar to how a satellite television broadcast is organized into selectable sub-channels by the broadcaster. These sub-channels can be selected or de-selected, allowing users to download all or any relevant portion of the GEONETCast broadcast that they need.

Once the channel is selected, each receiving station decodes the signal and recreates the data/products, according to a defined directory and file name structure.

Data streams available to Users typically include:

  • Space-based observations from the Meteosat, Metop, NOAA, Jason-2, GOES, MT-SAT, FY2 and FY-3A satellites; at their most frequent, these data are delivered to Users within five minutes of processing
  • MODIS level 1 and 2 products covering selective geographical regions
  • Land application products covering Europe, Africa and South America
  • Marine meteorological and ocean surface products covering the Atlantic, Mediterranean Sea and Yellow Sea
  • Atmospheric chemistry products

Products vary between regional services. For more detailed information on product availability in your area, please refer to the regional provider’s website to explore its product navigator.

 

Reception set-up and User registration

   Typical GEONETCast Reception Station Components
  

Fig. 2 Typical GEONETCast Reception Station Components

A typical GEONETCast reception station comprises a standard personal computer (PC) with DVB-S card inserted and a satellite off-set antenna fitted with a digital universal V/H LNB. All components of the reception station are commercially available. The hardware costs for a single PC station reception can be as little as €1,500 ($2000). In addition, a Client Software Package is required for handling the incoming DVB-S and storing it as data files. This package is available directly from regional GEONETCast Network Centres.

Registration typically involves the completion of an online registration form. For further information on the User registration process or on becoming a GEONETCast Data Provider, please contact your local GNC User Helpdesk:

EUMETCast: EUMETSAT User Helpdesk
email: ops@eumetsat.int
Web: http://www.eumetcast.com

FENGYUNCast: CMA, Mr. J. Zhang
email: zhangjs@cma.gov.cn
Web: http://www.nsmc.cma.gov.cn

GEONETCast-Americas: NOAA
email: paul.seymour@noaa.gov
Web: http://www.geonetcastamericas.noaa.gov/

Further information on GEONETCast: http://www.geonetcast.org

 

Discovering GEONETCast data

The GEONETCast Product Navigator is the data discovery component of the GEONETCast system. By searching with the GEONETCast Product Navigator, information can be found on products disseminated via GEONETCast. Such information includes product descriptions, file formats, dissemination frequency and links to other online resources such as product guides. Users can search using keywords and via themes, such as Societal Benefit Areas.

GEONETCast Product Navigator web interface

Fig. 3 GEONETCast Product Navigator

 

The Product Navigator is disseminated via the GEONETCast broadcasts and versions of the Navigator are available via the GNC websites, e.g.: http://navigator.eumetsat.int and www.geonetcastamericas.noaa.gov/product-productlisting.html.

Channels for hazard alerts and for training

In 2008, GEONETCast demonstrated initial proofs of concept for a Hazard Alert Channel, intended to relay regional environmental warnings and alerts in priority broadcasts to users. Discussions are also underway to transmit data and products for disaster response.

Also in 2008, GEONETCast demonstrated proofs of concept for a Training Channel dedicated to products and programming designed to train new users in the application and production of Earth observation products and in the use of tools for accessing Earth observation information. GEONETCast is developing a service strategy on how to operationally deploy the Training Channel, including determining user requirements and how file selection and broadcasts will be optimized to best serve user needs.

Conclusion

GEONETCast is an operational and effective, low-cost, satellite-based, dissemination system for Earth observation data. GEONETCast broadcasts environmental information to Africa, Asia, Europe, the Americas, and parts of the Pacific. The system’s user base is growing and diversifying. Although challenges exist, GEONETCast is meeting them and making measured progress in expanding the user base and increasing the value of the system worldwide.

Latest News 

GEO newsletter

GEO News Issue #17
(13 December 2011)

 

Outcome of GEO's side event at UNFCCC/COP 17, Durban, South Africa

 

GEO-VIII Plenary accepts new GEO 2012-2015 Work Plan

The Scientific and Research Council of Turkey (TUBITAK) hosted the GEO-VIII Plenary in Istanbul on 16 and 17 November. The Plenary's 380+ participants accepted the new GEO 2012-2015 Work Plan and the new Work Plan management structure. They also welcomed the recent improvements to the GEOSS Common Infrastructure, which now provides access to millions of data sets and information products through the GEO Portal. This includes the GEOSS Data-CORE, a distributed pool of documented datasets with full, open and unrestricted access at no more than the cost of reproduction and distribution. Other important outcomes of the meeting included an assessment and review of the progress made to date on GEOSS implementation, acceptance of the GEO Global Forest Observations Initiative (GFOI) Implementation Plan, and the launch of a process for defining the post-2015 phase of GEOSS. The review of the GEO-VIII Meeting Outcomes is available here

 

G20 Ministers launch GEO agricultural initiative

The agriculture ministers of the G20 countries adopted a ministerial declaration on 23 June in Paris launching a Global Agricultural Geo-Monitoring Initiative.
The aim of this GEO-led international monitoring network is to produce more accurate crop forecast data in order to promote food security. The Declaration is available here.

 

GEOSS in the Americas Symposium

The GEOSS in the Americas Symposium was held in Santiago de Chile from 5 to 7 October 2011. For more information please see the Symposium website.

 

Official review ends for GEO 2012-2015 Work Plan

Version 1 of the GEO Work Plan has been distributed to GEO Principals for comments. Version 1 incorporates the comments received from the GEO community during the technical review period March-May 2011 and draws from the outcomes of the 2011 Work Plan Symposium.

 

GEO's role in climate, biodiversity, forests

Research Media recently asked GEO Secretariat José Achache about GEO's progress over the past year and the challenges it faces going forward. The interview can be viewed here.

 

Japan's ALOS satellite concludes its mission

The Japan Aerospace Exploration Agency (JAXA) has announced that its Advanced Land Observing Satellite "DAICHI" (ALOS) has reached the end of its operational life following the loss of power onboard. During the five years it spent monitoring the planet, ALOS took 6.5 million images. Many of these images have contributed to GEO's ongoing work on monitoring the world's forests under the Forest Carbon Tracking task. Read more...

 

Technical review launched for GEO 2012-2015 Work Plan

Version 0 of the next GEO Work Plan has been distributed to the GEO community for comment by 26 May. The draft Work Plan, has been designed to fully address the 2015 Strategic Targets; establish an operational and sustainable GEOSS; reinforce coordination, user engagement and resource mobilization; and provide information products and end-to-end services tailored to serve society's needs across the nine Societal Benefit Areas.

 

Nominations invited for Will T. Pecora Award

The William T. Pecora Award is presented annually to individuals or groups that have made outstanding contributions toward understanding the Earth by means of remote sensing. The United States Department of the Interior (DOI) and the National Aeronautics and Space Administration (NASA) jointly sponsor the award. Read more...

 

GEO releases report on global water quality monitoring

The GEO Inland and Near-Coastal Water Quality Remote Sensing Working Group met last November to assess progress towards building the water quality component of GEOSS. The resulting progress report has been posted here.

 

Beijing Ministerial adopts Declaration

The GEO-VII Plenary and Beijing Ministerial, held from 3-5 November, assessed GEO's progress over the past five years, evaluated past and future GEOSS implementation, agreed a Data Sharing Action Plan, and adopted the Beijing Declaration. These documents as well as the speeches given during the Ministerial are posted on the meetings page. The full-color book "Crafting Geoinformation" is also available for download.

 

GEOSS Work Plan Progress Highlights presentation

 

Beijing showcase videos now available

On 5 November in Beijing, participants in the GEO Ministerial enjoyed a number of short videos introducing GEOSS and showcasing GEO achievements in the fields of biodiversity, carbon monitoring, capacity building, health services and water management in Asia/Oceania. These videos can be downloaded and viewed here (please note that these are large files).

 

Earth Observation Summit Endorses Global Data Sharing

Science magazine reported from Beijing on the GEO Ministerial; read the article here.

 

NASA sends cost-free data to African scientists

The provision of terrabytes of data to African researchers "support(s) the goals of the Group on Earth Observations, a partnership of international agencies that promotes collaborative use of Earth science data," said NASA. Read more here.

 

SERVIR-Himalaya launched in Kathmandu

USAID, NASA, and ICIMOD have joined hands to establish SERVIR-Himalaya as the third regional SERVIR operational facility. Read more here.

 

Get Connected Online to the "Earth Observation Symposium" and other events in Kathmandu 1-7 October 2010

Read full story

 

China, Secretariat brief Geneva diplomats on Beijing Ministerial

Dozens of government and UN diplomats attended a briefing on the upcoming Beijing Ministerial at the Mission of the People's Republic of China to the UN office in Geneva. For more details see the People's Daily article.

 

UK GEO Co-ordination Project Launched

Four of the UK organisations with a significant stake in building GEOSS have come together to develop the UK's strategy for involvement in GEO. This will be achieved through a jointly funded UK GEO Co-ordination Project. See the article here.

 

Nature cites GEO BON value for biodiversity assessment

An editorial in the prestigious science publication Nature has recognized the GEO Biodiversity Observation Network as a crucial mechanism for supporting the proposed Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services (IPBES). See the article here.

 

GEO BON launches Implementation Plan

The Group on Earth Observations Biodiversity Observation Network (GEO BON) has released its detailed, 175-page Implementation Plan for a coordinated global campaign to gather and share information on biodiversity, provide tools for data integration and analysis, and contribute to improved environmental management and human well-being. For more information, see the Technical Summary, Detailed Implementation Plan, and press release.

 

GEO participates in Shanghai Expo

The MeteoWorld Pavilion was officially unveiled on 9 May by the World Meteorological Organization, the China Meteorological Administration, EUMETSAT and GEO at the Shanghai Expo Park, Shanghai, China. Read full story

 

EnerGEO launches newsletter

As reported earlier in GEO News, the EnerGEO project (Earth Observation for monitoring and assessment of the environmental impact of energy use) started last November with support from the European Commission. The first issue of the EnerGEO newsletter is now available. To subscribe, please visit the EnerGEO website.

 

GEO applauds JAXA data on Haiti, Chile earthquakes

The Japan Aerospace Exploration Agency (JAXA) has provided essential ALOS/PALSAR satellite data to international scientists whose analyses support the emergency teams responding to the major earthquakes in Haiti, on 12 January, and Chile, on 27 February. Read full story here

 

WCRP announces Open Science Conference

The World Climate Research Programme will host a major international Open Science Conference in Denver, Colorado, USA in October 2011. The conference will bring together major disciplines and leaders of the Earth system research community to identify opportunities for advancing scientific understanding and prediction of climate variability and change from seasons to centuries, and from the regional to the global levels. Details are available on the conference website.