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RECENT INNOVATIONS IN DERIVING ATMOSPHERIC MOTION VECTORS AT CIMSS. PART 1: AMV CALCULATIONS USING HYPERSPECTRAL SATELLITE RETRIEVALS. Steve Wanzong, Chris Velden, Dave Santek, Jun Li, Erik Olson, Jason Otkin. SSEC/CIMSS Seminar 28 June 2006. Motivation.

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recent innovations in deriving atmospheric motion vectors at cimss

RECENT INNOVATIONS IN DERIVING ATMOSPHERIC MOTION VECTORS AT CIMSS

PART 1: AMV CALCULATIONS USING HYPERSPECTRAL SATELLITE RETRIEVALS

Steve Wanzong, Chris Velden, Dave Santek, Jun Li, Erik Olson, Jason Otkin

SSEC/CIMSS Seminar

28 June 2006

motivation
Motivation
  • Track constant-level sequential moisture analyses from hyperspectral soundings.
    • Reduce the height assignment errors.
    • Vertical profiles of winds.
    • Part of GOES-R risk reduction program.
methodology
Methodology
  • Employ high resolution mesoscale models to generate simulated atmospheres.
  • Calculate Top of Atmosphere (TOA) radiances from the mesoscale model simulations using the GIFTS forward radiative transfer model.
  • Generate single-field-of view water vapor retrievals (vertical profiles) from the TOA radiances.
  • Target and track clear-sky Atmospheric Motion Vectors (AMV) using constant-pressure (altitude) analyses derived from the water vapor retrievals and model mixing ratios.
7 th iww review
7th IWW Review

500 mb

Noise Filtered Retrievals 2580 targets

Noise Filtered Retrievals 326 vectors

atrec cont
ATReC (cont)

Noise Filtered Retrievals 5536 targets

407 mb

Noise Filtered Retrievals 316 vectors

atrec cont2
ATReC (cont)

IDV display of the retrieval winds illustrates the data density and vertical distribution.

Meters

oceanwinds cont
OceanWinds (cont)

Noise Filtered Retrievals 14414 targets

Noise Filtered Retrievals QI 1912 vectors

729 mb

oceanwinds cont2
OceanWinds (cont)

IDV display of the retrieval winds illustrates the data density and vertical distribution.

Meters

slide14

Polar Retrievals

AIRS Moisture Retrieval Targets and Winds (unedited) at 400 hPa

The moisture features are tracked in an area that is inscribed by 3 successive, overlapping passes in the polar region. See below.