Extension of Geophysical Monitoring/Validation to ECMWF

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Extension of Geophysical Monitoring/Validation to
ECMWF

• Presented by
• Flavio Iturbide-Sanchez

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The European Centre for Medium-Range Weather
Forecasts (ECMWF) Data

• ECMWF data is gridded Binary (GRIB) data
• Numerical Weather Prediction (NWP) model with a
  resolution of 0.25 deg in latitude and longitude.
• Latitude ranges from 90.0 to -90.0 deg and
  Longitude from 0.0 to -0.50 deg.
• Atmospheric parameters can be provided with 31,
  40, 50, 60 and 91 levels.

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The Skin Temperature in Kelvins using the Grid
Analysis and Display System (GrADS)
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Manipulation of the ECMWF data
Extract and organize ECMWF data into binary files
using the WGRIB program and a Perl script.
Re-grid the extracted data from 1440x760 to
360x181 points to reduce the amount of data and
to standardize it.
The extracted data has to be organized
(atmospherics parameters are extracted from the
higher to the lower pressure levels)
The size of a binary file contained just
atmospheric parameters is about 2 GB
Format the regridded data and provide the
required unit conversion to them
Program that collocates the ECMWF gridded data
into an orbit-based space using radiance
measurements
ECMWF Reader
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Extracted Parameters from the ECMWF Data

• Atmospheric Parameters
• Temperature
• Humidity
• Cloud Liquid Water Content
• Cloud Ice Water Content
• Ozone
• Surface Parameters
• Skin Temperature
• 2 meter Temperature
• Surface pressure
• 10 meter U- and V-Wind Component
• Land/Sea Mask

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Atmospheric Profiles obtained from the ECMWF
Reader
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Atmospheric Profiles obtained from the ECMWF
Reader
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Manipulation of the ECMWF data
Extract and organize ECMWF data into binary files
using the WGRIB program and a Perl script.
Re-grid the extracted data from 1440x760 to
360x181 points to reduce the amount of data and
to standardize it.
The extracted data has to be organized
(atmospherics parameters are extracted from the
higher to the lower pressure levels)
The size of a binary file contained just
atmospheric parameters is about 2 GB
Format the regridded data and provide the
required unit conversion to them
Program that collocates the ECMWF gridded data
into an orbit-based space using radiance
measurements
ECMWF Reader
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Interpolation of Four ECMWF points to the
Location of the Space-based Measurements
ECMWF data
Footprint Center
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Interpolated Atmospheric Profiles
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Interpolated Atmospheric Profiles