World MeteorologicalOrganisation

Use of Radio Frequency spectrum

for weather, water and climate sciences and operations

Jean-Michel Rainer

Weather, Water and Climate

Importance of information provided by Earth-exploration systems including meteorological systems for a wide range of economic activities such as agriculture, transportation, construction, tourism, etc,

Weather, Water and Climate

Crucial importance of the allocation of suitable radio-frequency bands for:

the operation of surface-based meteorological and related observing systems, including in particular radiosondes, weather radars, wind profiler radars

the operation of Meteorological and R&D satellites, including remote sensing (passive & active), data collection and data distribution links

Importance of radiocommunications for weather, water and climate operation

and research

XV World Meteorological Congress, 2007

(188 WMO Members)By Resolution 3:• Re-affirmed the crucial importance of RF bands for

meteorological and related environmental operations and research, and for disaster risk reduction

• Stressed that some RF bands are a unique natural resource for passive sensing that deserve absolute protection

• Urged all Members to do their utmost at national, regional and international levels to ensure the availability and protection of suitable RF bands

• Appealed ITU and its Administrations to ensure the absolute protection of the passive sensing RF bands, and to give due consideration to the WMO requirements for RF allocations and regulatory provisions

WMO’s position on the WRC-07 agenda Issues of prime interest for meteorology:

Agenda item 1.2:Extension of the 18 GHz MetSat allocation and protection of the 10.7 and 36 GHz EESS (passive) bands

Agenda item 1.3:Upgrading and protection of radiolocation in the 9 GHz range, and 200 MHz extension of the Earth exploration-satellite service (EESS) allocation at 9 500-9 800 MHz

Agenda item 1.4:Impact on meteorological radars and satellite C-band related to future frequency bands for IMT-2000

Agenda item 1.12: Coordination and notification procedures for Earth exploration-satellite service (EESS) (active and passive) sensors

Agenda item 1.17: Protection of the 1.4 GHz EESS (passive) band Agenda item 1.20: Unwanted emissions in EESS (passive) bands Agenda item 7.2:WRC-11 agenda

WMO’s position is available as WRC-07 Doc.20 (WMO Information paper), including WMO Congress Resolution «Radio-frequencies for meteorological and related environmental activities» All 188 WMO Members (National Meteorological Services) have been urged to address the matter with their national radiocommunication administration

WMO’s position on the WRC-07 agenda Issues of prime interest for meteorology:

Agenda item 1.2: Extension of the 18 GHz MetSat allocation and protection of the 10.7 and 36 GHz EESS (passive) bandsWMO favours a worldwide allocation in either 18-18.1 GHz band or 18.3-18.4 GHz band. WMO strongly encourages the identification of the maximum power and eirp for fixed and mobile services that would protect EESS (passive) in the 10.6-10.68 GHz and the 36-37 GHz passive bands

Agenda item 1.3: Upgrading and protection of radiolocation in the 9 GHz range, and 200 MHz extension of the Earth exploration-satellite service (EESS) allocation at 9 500-9 800 MHzWMO supports the upgrade to primary of Radiolocation Service in the band 9 300-9 500 MHz on an equal footing with Radionavigation Service retaining the provisions that address meteorological radars. Expecting no potential interference impact to meteorological radar operations, WMO supports extension to the band 9 300-9 500 MHz of the EESS (active) and the space research service (active) allocations.

WMO’s position on the WRC-07 agenda Issues of prime interest for meteorology:

Agenda item 1.4: Impact on meteorological radars and satellite C-band related to future frequency bands for IMT-2000Studies prior to WRC-2000 already concluded on the non-compatibility between IMT-2000 and radars; WMO is strongly opposed to any IMT‑2000 and IM66-Advanced identification in the 2700-2900 MHz and 5250-5650 MHz bands.

Agenda item 1.12: Coordination and notification procedures for Earth exploration-satellite service (EESS) (active and passive) sensorsWMO supports modifications to Radio Regulations to permit recording and publication of appropriate data pertaining to EESS and SRS active and passive sensors in the International Master Frequency Register

Agenda item 1.17: Protection of the 1.4 GHz EESS (passive) bandThis band is a vital resource for measuring salinity and other aspects of the Earth. WMO is of the view that such a secondary FSS allocation should not be confirmed at WRC‑07

WMO’s position on the WRC-07 agenda Issues of prime interest for meteorology:

Agenda item 1.20: Unwanted emissions in EESS (passive) bands

WMO supports appropriate regulatory measures in the Radio Regulations (power limits for unwanted emissions) to ensure the protection of the Earth exploration satellite service service (passive) from unwanted emissions.

Agenda item 7.2: WRC-11 agenda

WMO supports the retention in WRC-10 agenda of the review of the uses of the spectrum from 275 to 3 000 GHz by the Earth exploration-satellite (passive), radio astronomy, and space research (passive) services.

Thank You!