1. CGMS and Meteorological Satellites Data Collection Services
Sean Burns

2. The Coordination Group for Meteorological Satellites (CGMS)
The objective of the Coordination Group for Meteorological Satellites (CGMS) is the global coordination of the operational meteorological satellite systems, including protection of in orbit assets, contingency planning, improvement of quality of data, support to users, facilitation of shared data access and development of the use of satellite products in key application areas. The coordination is pursued from an end-to-end perspective, through development of multi-lateral coordination and cooperation across all meteorological satellite operators in close coordination with the user community (WMO, IOC-UNESCO and other user entities). One area that CGMS works closely with meteorological satellite operators is Data Collection Systems including Geostationary and Low Earth Orbit Systems. This presentation will give an overview of the various systems coordinated by CGMS.

3. Coordination of Meteorological Satellites

4. Coordination of Meteorological Satellites

5. Meteorological Satellites Data Collection Services
Data Collection Systems (DCS) are operated by:
EUMETSAT – Meteosat satellites
NOAA (USA) – GOES satellites
Japanese Meteorological Agency (JMA) – Himawari
These DCS are coordinated by the Coordination Group for Meteorological Satellites (CGMS)
DCS Systems are also operated by:
Chinese Meteorological Administration (CMA) – Fen Yung
Indian Space Research Organisation (ISRO) – INSAT
Roshydromet (Russia) – GOMS satellite Elektro L N2
Meteosat DCS presentation

6. CGMS DCS Systems – Global Coverage
EUMETSAT, NOAA, JMA Satellites

7. DCS System Overview – Bandwidth
Basic general partitioning of the band MHz for future long-term coordinated use of DCS systems on geostationary and non-geostationary MetSat and EESS systems
(1) The following conditions contained in recommends 2 are as follows: in the band MHz the non-geostationary MetSat system Meteor-3M will only operate over the territory of the Russian Federation.
(2) The following conditions contained in recommends 4 are valid for the use of the bands MHz and MHz by ARGOS platforms:
maximum e.i.r.p. of –3 dBW;
maximum number of ARGOS active platforms to be deployed in each of the two sub-bands not to exceed 1 000 within the visibility circle of FY-2 and FYGEOSAT series satellites;
maximum duty cycle (ratio of transmission duration over the repetition period) of each platform not to exceed 0.01 (on average 0.6 s over 60 s).
(3) The following conditions contained in recommends 5 are as follows: the band MHz can also be used by DCP GSO systems of the Russian Federation, noting that for the sub-band MHz, these systems must be limited to operation over the Russian territory with a maximum e.i.r.p. of 16 dBW.
Meteosat DCS presentation

8. Japan Meteorological Agency DCS

9. Japan Meteorological Agency DCS
The Data Collection System (DCS) is used to collect and relay data via earth-based observation channels (Data Collection Platforms, or DCPs) within the communication range of a geostationary satellite such as Himawari-8. Observational data measured by DCPs are transmitted to Himawari, which in turn relays them to the ground stations operated by the Himawari Operation Enterprise Corporation (HOPE). Data received at HOPE are demodulated and sent to the Meteorological Satellite Center (MSC) of JMA. Data processed at MSC are handed over to JMA's main telecommunication system, and are then reported to DCP operators over the Global Telecommunication System (GTS) of the World Meteorological Organization (WMO). For operators without a GTS network connection, JMA reports the collected DCP data by , and/or posts them on the MSC website in addition to delivery via the GTS. If DCP operators wish, the DCP data collected at MSC through Himawari can be delivered by to the operators and/or posted on the website managed by MSC. The website is available only to operators with an account and a password issued by JMA.

10. Japan Meteorological Agency DCS
In addition to the DCP support function, the Himawari-8 DCS supports exchanges of earthquake-related information. The satellite collects seismic intensity data from earthquake observation sites all over Japan. Its DCS also supports dissemination of emergency tsunami/earthquake information within the Himawari-8 communication range. The name MTSAT-DCS was changed to Himawari-DCS with the operational satellite switchover in July DCP stations using MTSAT-DCS were able to use Himawari-DCS with no change in DCP antenna direction or DCP settings and no reapplication to JMA

11. Japan Meteorological Agency DCS
Himawari-DCS is available to organizations that operate DCPs within the communication range of Himawari, provided that the DCP meets the criteria laid down by JMA. These DCPs are expected to work for the common good internationally in the field, such as conducting activities in the area of meteorological services. Those wishing to use Himawari-DCS to acquire observed data should obtain consent from JMA. Please note that not all applications can be accepted due to the radio frequency channel availability limitations of Himawari-DCS.

12. Japan Meteorological Agency DCS
DCPs are expected to transmit their data with a fixed time-interval
Himawari-DCS employs a time-sharing system to accommodate many DCPs per channel
Radio frequency channels
Radio frequency channels for DCPs are allocated by JMA within the frequency band MHz
Mode
Time-sequential mode (time slots are typically two minutes each)
Data transmission rate
100 bps (or 300 bps)
Bandwidth
1.8 kHz (for 100 bps and 300 bps)
Typical equipment required in addition to observing instruments
A transmitter with 5, 10 or 20 Watts of output and a directional antenna

13. Japan Meteorological Agency DCS