CGMS and Meteorological Satellites Data Collection Services Sean Burns

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. http://www.cgms-info.org/index_.php/cgms/index

Coordination of Meteorological Satellites

Coordination of Meteorological Satellites

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

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

DCS System Overview – Bandwidth Basic general partitioning of the band 401-403 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 401.899-401.998 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 401.1-401.2 MHz and 401.3-401.4 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 401.5-401.7 MHz can also be used by DCP GSO systems of the Russian Federation, noting that for the sub-band 401.58-401.7 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

Japan Meteorological Agency DCS

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 e-mail, 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 e-mail 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.

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 2015. 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

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.

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 402.0685 - 402.4000 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

Japan Meteorological Agency DCS http://www.jma.go.jp/jma/jma-eng/satellite/nmhs.html