Wind Errors Using the Worldwide Loran Network

Passi, Ranjit M.; Morel, Claude

doi:10.1175/1520-0426(1987)004<0690:weutwl>2.0.co;2

Cited by 11 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Part of the G-IV jet procurement activity in the mid1990s involved a redesign of the dropwindsonde, which previously had used either Omega (Passi 1974) or loran (Passi and Morel 1987) signals for navigation. As loran signals were only available near land, and the Omega network was being phased out, a new wind-finding solution was required.…”

Section: B Gps Dropwindsondesmentioning

confidence: 99%

Advances and Challenges at the National Hurricane Center

Rappaport

Franklin

Avila

et al. 2009

Weather and Forecasting

343

210

View full text Add to dashboard Cite

The National Hurricane Center issues analyses, forecasts, and warnings over large parts of the North Atlantic and Pacific Oceans, and in support of many nearby countries. Advances in observational capabilities, operational numerical weather prediction, and forecaster tools and support systems over the past 15-20 yr have enabled the center to make more accurate forecasts, extend forecast lead times, and provide new products and services. Important limitations, however, persist. This paper discusses the current workings and state of the nation's hurricane warning program, and highlights recent improvements and the enabling science and technology. It concludes with a look ahead at opportunities to address challenges.

show abstract

Section: B Gps Dropwindsondesmentioning

confidence: 99%

Advances and Challenges at the National Hurricane Center

Rappaport

Franklin

Avila

et al. 2009

Weather and Forecasting

343

210

View full text Add to dashboard Cite

show abstract

“…The Cross-Chain Long Range Navigation (LORAN) is a modern, research-quality system, which provides high-resolution winds; tracking errors are not dependent on the elevation angle of the sonde from the receiver (Rust et al, 1990). The system uses sondes (Väisäla RSL-80) that receive LORAN navigation signals for locating the balloon and calculating horizontal winds (for details see Passi and Morel, 1987). The radiosondes relay LORAN transmissions from which wind speed and direction can be retrieved by processing the times of arrival of signals from five to six LORAN stations around the Great Lakes region.…”

Section: Introductionmentioning

confidence: 99%

Comparisons of CLOVAR windprofiler horizontal winds with radiosondes and CMC regional analyses

Belu

Hocking²,

Donaldson³

et al. 2001

Atmosphere-Ocean

View full text Add to dashboard Cite

show abstract

“…The winds are computed via the ANI-7000 navigation system that simultaneously collects data from several LORAN chains rather than the usual single chain. The resulting redundancy allows computation of winds with expected errors of less than 0.5 m • s _1 for the GALE region (Passi and Morel, 1986). Thus, the system has a potential for accuracy that is greatly increased over conventional sounding systems and appears particularly well-suited for use in a mesoscale study.…”

Section: H the Portable Automated Mesonet (Pam Ii)mentioning

confidence: 99%

The Genesis of Atlantic Lows Experiment: The Planetary-Boundary-Layer Subprogram of GALE

Raman¹,

Riordan²

1988

Bull. Amer. Meteor. Soc.

View full text Add to dashboard Cite

The Genesis of Atlantic Lows Experiment (GALE), focused an intensive data-gathering effort along the mid-Atlantic coast of the United States from 15 January through 15 March 1986. Here, the general objectives and experimental layout are described with special emphasis on the planetary-boundary-layer (PBL) component of GALE.Instrumentation is described for buoys, ships, research aircraft, and towers. The networks of the cross-chain long range aid to navigation (LORAN) atmospheric sounding system (CLASS) and the portable automated mesonet (PAM II) are described and their impact on the operation of GALE is outlined. Special use of dual-Doppler radar to obtain detailed wind measurements in the PBL is discussed.Preliminary analyses for a selected observational period are given. Detailed observations of the offshore coastal front reveal direct mesoscale circulations imbedded in the frontal zone. Later in the period, during an intense cold-air outbreak, sensible-heat and latent-heat fluxes over the coastal ocean each attain values of about 500 W • m~2. Coordinated aircraft operations are outlined for this case and a few early findings are given.

show abstract

Wind Errors Using the Worldwide Loran Network

Cited by 11 publications

References 0 publications

Advances and Challenges at the National Hurricane Center

Advances and Challenges at the National Hurricane Center

Comparisons of CLOVAR windprofiler horizontal winds with radiosondes and CMC regional analyses

The Genesis of Atlantic Lows Experiment: The Planetary-Boundary-Layer Subprogram of GALE

Contact Info

Product

Resources

About