Slide 1 ECMWF Training Course - The Global Observing System - 06/2013 The Satellite Global Observing System Stephen English 1. A brief introduction to the Satellite GOS 2. Monitoring of satellite observations 3. OSCAR – WMO’s database for global observations, user requirements and gap-analysis
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Slide 1 ECMWF Training Course - The Global Observing System - 06/2013 The Satellite Global Observing System Stephen English 1.A brief introduction to the.
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Slide 1
ECMWF Training Course - The Global Observing System - 06/2013
The Satellite Global Observing System
Stephen English
1. A brief introduction to the Satellite GOS2. Monitoring of satellite observations3. OSCAR – WMO’s database for global observations,
user requirements and gap-analysis
Slide 2
ECMWF Training Course - The Global Observing System - 06/2013
What types of satellites are used in NWP?
Advantages Disadvantages
GEO - Regional coverage No global coverage by single satellite
- Temporal coverage
LEO - Global coverage with single satellite
Slide 3
ECMWF Training Course - The Global Observing System - 06/2013
Radio occultation
Geo IR and Polar MW Imagers
Feature tracking in imagery (e.g. cloud track winds), scatterometers and doppler winds
Geo IR Sounder
Radar andGPS total path delay
PolarIR + MWsounders
MoistureMass
Wind
Composition
Ultraviolet sensors
Sub-mm,and near IR plusVisible (e.g. Lidar)
IR = InfraRedMW = MicroWave
Slide 4
ECMWF Training Course - The Global Observing System - 06/2013
Satellite data used by ECMWF
Slide 5
ECMWF Training Course - The Global Observing System - 06/2013
Slide 6
ECMWF Training Course - The Global Observing System - 06/2013
ECMWF Training Course - The Global Observing System - 06/2013
Data monitoring – automated warnings
Slide 9
ECMWF Training Course - The Global Observing System - 06/2013
Satellite data monitoringData monitoring – automated warnings
Slide 10
ECMWF Training Course - The Global Observing System - 06/2013
Global Observing System is essential to weather forecasting
Technology driven….a more integrated approach now?
Mass is well observed.
Moisture – satellite observations are data rich but poorly exploited. Radar and lidar will become more important.
Dynamics – even wind observations are scarce.
Composition – NWP techniques have been successfully extended to environmental analysis and prediction but more observations are needed.
Surface – DA for surface fields is being attempted.
Slide 11
ECMWF Training Course - The Global Observing System - 06/2013
User requirements http://www.wmo-sat.info/db/
• Vision for the GOS in 2025 adopted June 2009• GOS user guide WMO-No. 488 (2007)• Manual of the GOS WMO-No. 544 (2003) (Update of satellite section being prepared for ET-SAT Geneva April 2012)
Slide 12
ECMWF Training Course - The Global Observing System - 06/2013
Sun-Synchronous Polar SatellitesInstrument Early morning