1 1 Atmospheric Conditions And Meteorological Geographical Features (TWG – AC+MF) Spiros Ventouras...
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Transcript of 1 1 Atmospheric Conditions And Meteorological Geographical Features (TWG – AC+MF) Spiros Ventouras...
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Atmospheric Conditions
And
Meteorological Geographical Features
(TWG – AC+MF)Spiros Ventouras (Editor)
CEDA – RAL Space - STFC
Edinbrough 29 June 2001
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TWG - AC+MFAtmospheric Conditions + Meteorological Geographical Features
Membership:
Sheila Cryan - European Environmental Agency
Esa Falkenroth - Swedish Meteorological and Hydrological Institute
Frédéric Guillaud - Météo-France
Stefano Nativi - Italian National Research Council (CNR - IMAA)
Erwin Petz - Zentralanstalt f. Meteorologie und Geodynamik, Austria
Ilkka Rinne - Finnish Meteorological Institute (FMI)
Martin Schultz
Raymond Sluiter - Royal Netherlands Meteorological Institute (KNMI)
Bernard Strauss (Facilitator) - Météo-France
Spiros Ventouras (Editor) - STFC Rutherford Appleton Laboratory, UK
Aasmund Vik
Bruce Wright - Met Office, UK
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TWG - AC+MF from the directive
• III-13 Atmospheric Conditions:– Physical conditions in the atmosphere. Includes spatial data based on measurements,
on models or on a combination thereof and includes measurements locations
• III-14 Meteorological Geographical Features:– Weather conditions and their measurements: precipitation, temperature,
evapotranspiration, wind speed and direction
!!! What is the difference between III-13 and III-14? Distinction is not so clear & scope potentially very large
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TWG - AC+MF approach
• Develop Use Cases and use them to focus on which data are really needed– Treat AC & MF as single theme for initial development of data specification
• Ensure coherence with other, highly significant, development work underway:– Data and services specification in OGC MetOcean Domain Working
Group– New WMO Information System
• both aiming at interoperability of meteorological information
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Finding best locations for new wind farms
Climate Impacts
Flash flood forecasting
Use of meteorology in
support of emergency
responseUse of meteorology in
support of emergency
response Flood forecastingFlood forecasting
Climate assessment (with past & predicted data)
Climate assessment (with past & predicted data)
High Level
Plume prediction in support of emergency
response Short & medium range flood forecasting
Detailed
Use Cases
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The scope
• No guidance available on the range of information to be covered by AC + MF:– Inclusion of forecast data?– Precise list of parameters?– Spatial and temporal resolution?– Vertical dimension?– Etc.
• Detailed review of available documents yields no a priori reason to exclude any type of meteorological information– => critical question: feasibility and affordability.
• List of mandatory parameters for the initial implementation: basic meteorological parameters required for the reference use cases
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The model
• Four leaf packages:
AtmosphericCondition AtmosphericConditionProcess ObservableProperty CSML v3
• "Climate Science Modelling Language", a standards-based data model and GML application schema for atmospheric and oceanographic data developed at the Rutherford Appleton Laboratory (UK)
• with dependencies on packages from the INSPIRE Generic Conceptual Model and geographic information International Standards (ISO 191xx series), in particular ISO 19156.
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The modelPackage Structure & Dependencies
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The modelISO 19156 (Observations and Measurements)
• the AC-MF conceptual schema is rooted on the common base conceptual model of Observation and Measurements (O&M) defined in ISO 19156:2011 which introduces the concepts of observation and spatial sampling feature.
• Observation: is an act that results in the estimation of the value of a feature property of a feature of interest using a designated procedure.
• Spatial sampling feature: the applied sampling regime required where exhaustive observation of environmental parameters is not possible – for example, there is no observation that can provide air temperature values of the whole atmosphere above London.
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The modelISO 19156 (The concept of Observation )
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The model-ISO 19156 (Spatial Sampling Feature ) Example illustrating the of concepts: sampling coverage observation,
sampling feature and sampled feature.
temperature
SamplingCoverageObservation
observedProperty
featureOfInterest
relatedObservation
spatialSamplingFeature (Point)
sampledFeature
Chilbolton Observatory, UK
Measurements of air temperature (observed property) at a specific location (a point spatial sampling feature) of the atmosphere above Chilbolton Observatory, UK (sampled feature).
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• Central place given to “Atmospheric Condition”: aggregation of one or more instances of OM_Observation
• Examples of such aggregation:– an entire result set (all parameters, all times, all levels) of a single model run– all observations collected from a single ground observation station within one collecting
period (1 minute - 1 day)– all observations collected from all available ground observation stations within one
collecting period (last 3-6h)– all possible weather information available for a given region over a given time period– all air traffic related meteorological information considering two given airports and the
airspace between– any distinct data set containing meteorologically interesting data
The modelAc:Atmospheric Condition
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The modelAc:Atmospheric Condition
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• The list of parameters to be included in an Atmospheric Condition instance shall be extracted from the “ObservablePropertyValue” code list, depending on the need of the application for which the data is produced.
• If the codelist ObservablePropertyValue is not sufficient to describe an observedProperty, e.g. daily maximum temperature, further detail shall be provided by the attribute SimpleObservableProperty.constraint
The modelAc:ObservableProperty / Parameters
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The modelAc:ObservableProperty
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• The Directive states that atmospheric data can originate from measurements, models, or post-processed information combining measurement and model output.
• AtmosphericConditionProcess shall provide information regarding the
procedureused to generate the result for each observation member of AtmosphericCondition.
• This set of information consists of the following information pieces: identification, type and further documentation of the applied procedure; individual(s) and/or organisation(s) related to the procedure; names of parameters controlling the procedure’s output.
The modelAc:Atmospheric Condition Process
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The modelAc:Atmospheric Condition Process
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The modelCSML V3
• AC-MF model adopts the CSML observation types - specialisations of sampling coverage observation - each corresponding to a particular spatiotemporal sampling geometry and related coverage result [OGC pending document 11-021].
• CSML will be external to AC-MF model in the future versions.
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The modelCSML V3
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The modeloverview
AtmosphericConditionState of the Atmosphere over
a temporal/spatial extent
ResultIncluding estimates
ObservedPropertyOf phenomena
FeatureOfInterestOf Atmoshphere
Or a relevantSamplingFeature
e.g.Profile
AtmosphericConditionProcessObserved using a procedure
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TWG - AC+MFAtmospheric Conditions + Meteorological Geographical Features
Thank you for your attention !
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