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for Better Understanding of Potential Applications Michal Koutek , - - PowerPoint PPT Presentation

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Royal Netherlands Meteorological Institute Ministry of Infrastructure and the Environment 3D Exploration of Weather Data in Combination with IASI L2 Products for Better Understanding of Potential Applications Michal Koutek , S. de Haan, I.

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Royal Netherlands Meteorological Institute Ministry of Infrastructure and the Environment

3D Exploration of Weather Data in Combination with IASI L2 Products for Better Understanding of Potential Applications Michal Koutek, S. de Haan,

  • I. van der Neut, F. Debie,
  • P. de Valk (KNMI),
  • S. Tjemkes (EUMETSAT)

Email: koutek@knmi.nl Date: 25-09-2014

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Preliminary Visualization study for the MTG – IRS project

MTG-IRS objectives:

  • To support regional NWP in Europe,

through detailed 3D fields of temperature, humidity, and wind at high vertical, horizontal and temporal resolution

  • To support now-casting and very-short range

forecasting Obviously, a lot of effort is put into development

  • f L2 algorithms and products.
  • •
  • L0
  • L0
  • L1
  • L1 processing
  • Spectral sounding
  • Interferogram
  • Earth
  • Dwell
  • Detection

element

  • time
  • number
  • wave
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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

IASI: Polar-Orbiting Hyper-Spectral Sounder

IASI as proxy for IRS

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Input data for our visualization study: MTG-IRS L2 Proxy (IASI) Data

EUMETSAT provided us with:

  • Point-profiles at ECMWF levels with prior fields (ECMWF)

and retrieved fields (IASI L2):

  • Temperature, specific humidity, and relative humidity
  • Quality control indicators

We have computed derived fields such as Theta-W. Besides pressure information we need geometric height for 3D grid. Note on retrieval algorithm: EUMETSAT implemented the UWPHYSRET algorithm as the IRS Level 2 Development and Validation Processor (IRS-L2DVP).

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Statistics: Important step in understanding

  • Statistical methods such bias and standard

deviation provide a global overview of the numerical quality of the retrievals.

  • What can be the next step beyond statistics

and numerical analysis?

bias std. deviation bias std. deviation [KNMI: Siebren de Haan, Gert-Jan Marseille, Paul de Valk]

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Next Step: Visualization and Exploration

Our approach:

  • Apply a well-established concept of interactive 3D visualization
  • f meteorological data that uses Virtual Reality.

=> Weather 3D Explorer application [KNMI]

  • Provide meteorological context to the IASI retrieval data with actual satellite and

RADAR images, and NWP models such as ECMWF and HARMONIE.

  • Let the forecasters and the scientists interactively explore the weather situation

and study the 3D profile data.

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Selection of weather cases

2013.06.20 09:00 utc 2013.06.20 10:00 utc 2013.06.20 11:00 utc Which MetOpA/B swath to take for a detailed exploration ? 2012.06.20 2012.07.10 2013.06.20 2013.06.21

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Selection of weather cases

2012.06.21 09:00 utc 2012.06.21 11:00 utc Valid retrieval points and cloude-free areas..

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Putting the pieces together ..

2012.06.21 20:00 utc 2012.06.21 20:00 utc

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Iso-contours of CLOUDS (HARMONIE model)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Iso-contours of RAIN intensity (HARMONIE model)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Cross-section Theta-W (IASI L2) Cross-section Theta-W (HARM) Cross-section Theta-W (IASI L2)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Method: Bring the 3D point-profile data into 3D grid.

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Method: Bring the 3D point-profile data into 3D grid.

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Method: Bring the 3D point-profile data into 3D grid.

Specific humidity L2VDP (IASI)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Visualize the gridded profile data in 3D

NOTE: SPARSE DATASET

Specific humidity L2VDP (IASI)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Visualize the gridded profile data in 3D

NOTE: IT IS A SPARSE DATASET

  • 3D cross-sections, color-mapping
  • 3D iso-surfaces

Specific humidity L2VDP (IASI)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

For context provide satellite images, ECMWF model clouds

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved fields: Temperature

Temperature IASI

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved fields: Temperature

Temperature ECMWF

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved fields: Temperature

Temperature DIFF = IASI - ECMWF

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved temperature and model temperature

IASI ECMWF IASI ECMWF

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved fields: Relative humidity

  • Rel. humidity IASI
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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved fields: Relative humidity

  • Rel. humidity ECMWF
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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved fields: Relative humidity

  • Rel. humidity DIFF = IASI - ECMWF
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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring retrieved fields: Specific humidity

  • Spec. humidity IASI
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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014
  • Spec. humidity ECMWF

Exploring retrieved fields: Specific humidity

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014
  • Spec. humidity DIFF = IASI - ECMWF

Exploring retrieved fields: Specific humidity

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Specific humidity

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Temperature

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Theta-w

2013.06.20 09:00utc

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Theta-w

2013.06.20 10:00utc

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Theta-w

2013.06.20 11:00utc

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Theta-w

2013.06.20 12:00utc

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Theta-w

2013.06.20 13:00utc Theta-w (IASI)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Theta-w

2013.06.20 13:00utc Theta-w (ECMWF)

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Interesting observations: Theta-w

2013.06.20 13:00utc Theta-w (DIFF) IASI - ECMWF

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring differences: Temperature

Background: ECMWF cross-section Foreground: IASI data points

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SLIDE 39

3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring differences: Relative humidity

Background: ECMWF cross-section Foreground: IASI data points

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Exploring differences: Specific humidity

Background: ECMWF cross-section Foreground: IASI data points

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Time for short videos

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

Conclusions

  • Interactive 3D exploration may be very helpful for understanding
  • f actual weather situation and interpretation of retrieved

atmospheric profiles.

  • We cannot make the data better than they actually are,

but we can make the relevant data clearly visible in the right context.

  • The difference between prior and posterior fields has to be studied

and better understood.

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3D Exploration of Weather Data in Combination with IASI L2 Products

  • M. Koutek, KNMI, 25-09-2014

More information:

http://www.knmi.nl/samenw/w3dx/images/3D- demos/presentation-3D-VIS-IASI-in-W3DX-at- eumetsat/#w3dxIasiDemos Or just google: “w3dx iasi knmi” ;-) Thank you for your attention.