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Codiac Project: Datasets

IMPROVE project description

Improvement of Microphysical Parameterization through Observational Verification Experiment

Summary

The UW Department of Atmospheric Sciences in Seattle was the Forecasting and Operations Control Center (FOCC) for IMPROVE-1. Between IOPs, the S-Pol radar on the Washington Coast was used for surveillance of incoming storms, and this radar imagery was available to forecasters at the FOCC. When forecasts indicated that a frontal system was approaching within ~200 km of the Washington Coast, 3-hourly launches of rawinsondes were commenced at Quillayute, Westport, and Salem.

The Convair-580 departed from its home base at Paine Field, Washington, when the S-Pol radar showed precipitation features of interest within ~1 hour of being ~170 km from the coast. The Convair-580 was guided into precipitation features of interest off the Washington Coast by air-to-ground communications with a scientist at the FOCC who had real-time displays of the S-Pol radar images with the location of the Convair-580 overlaid. The basic flight pattern was a vertical profile from close to the ocean surface to the top of the cloud system or to the maximum altitude of the Convair-580 (~7.25 km), with the aircraft generally advecting with the precipitating feature of interest as it moved onto the coast through the region of dual-Doppler coverage.

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Temporal coverage

Begin date: 2001-01-01 00:00:00, End date: 2001-02-14 23:59:59

Spatial coverage

Minimum latitude: 45.000000, Minimum longitude: -126.000000
Maximum latitude: 49.000000, Maximum longitude: -122.000000

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