-------- Original Message --------
The NWS upper air office at Cold Bay, Alaska (WMO# 70316), will
transition from the Vaisala RS80-57H radiosonde to the Lockheed Martin
Sippican B2 radiosonde on or about 00:00 UTC April 1, 2010.
The NWS upper air office at Kotzebue, Alaska (WMO# 70133), will
transition from the Vaisala RS80-57H radiosonde to the Lockheed Martin
Sippican B2 radiosonde on or about 00:00 UTC April 1, 2010.
The NWS upper air office at Pago Pago, in the Pacific (WMO# 91765),
will transition from the Vaisala RS80-57H radiosonde to the Lockheed
Martin Sippican B2 radiosonde on or about 00:00 UTC April 1, 2010.
The NWS upper air office at Chuuk, in the Pacific (WMO# 91334), will
transition from the Vaisala RS80-57H radiosonde to the Lockheed Martin
Sippican B2 radiosonde on or about 00:00 UTC April 1, 2010.
The B2 radiosonde has been used in the NWS Upper air network since June,
1997. Unlike the Vaisala RS80-57H, a solar/IR radiation temperature
correction is not applied to the B2 data at the station prior to
dissemination.
Please update your databases.
Questions on the radiosonde transition should be directed to Joseph
Facundo, Observing Systems Branch Chief, at Joseph.Facundo@xxxxxxxx