Anomaly Correlations computed from 90S to 90N Control AIRS - - PowerPoint PPT Presentation

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anomaly correlations computed from 90s to 90n control
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Anomaly Correlations computed from 90S to 90N Control AIRS - - PowerPoint PPT Presentation

Dec 25, 2022 96 likes •379 views

Anomaly Correlations computed from 90S to 90N Control AIRS clear-sky radiances AIRS cloudy retrievals USED REJECTED There are simply NO DATA accepted by the DAS in the area where NARGIS developes, because the measurements are in cloudy areas.

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Anomaly Correlations computed from 90S to 90N

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Control AIRS clear-sky radiances AIRS cloudy retrievals

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There are simply NO DATA accepted by the DAS in the area where NARGIS developes, because the measurements are in cloudy areas. USED REJECTED

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Slp RAD analysis (contour) RAD slp impact (shaded) X: observed Helene position 300 hPa Temp Impact (ret minus Control, shaded) And slp impact (contour) Slp RET analysis (contour) RETRIEVALS slp impact (shaded) AIRS TIGHT RET produces a PERFECT position for Helene and a deeper storm

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Forecasts from Analysis in which AIRS TIGHT RET are assimilated improve Helene’s Formation as a hurricane (12z 16Sep). Improvement is minimal in RAD case Comparison Of 36-h Forecasts

  • f AIRS TIGHT RET

(lower left) with AIRS RAD (upper right)

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400 hPa AIRS RET-induced Temp anomaly (shaded) And impact on slp (contour) RAD slp analysis (contour) And difference from CNTRL.. Negative impact From assimilation of clear-sky Radiances. AIRS RET slp analysis (contour) and difference from CNTRL (shaded)

AIRS RET improves location and intensity also at subsequent times; FORECASTS from the improved analyses are much superior.

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800 hpa relative humidity, sea level pressure (hPa) CNTRL RADIANCE RETRIEVALS Display an Eye-like feature NCEP Operational Analyses, Very poor

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Radiances Very weak System, low Vorticity Retrievals Much higher (100%) Vorticity Retrievals: Realistic 2-band structure comparing well with satellite Radiances: very poor structure: Two unconnected convective systems without a deep circulation

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OBS CNTRL AIRS RAD AIRS RET

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Maximum Flood Severity Peak of precip Peak of precip Second Precip Maximum Maximum Flood Severity Primary Precip Maximum

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Precip Peak SW

  • f Peshawar

Underestim. Prec Peak The precip SW of Peshawar Improves of 60% As a consequence Of AIRS retrievals ingestion

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