background. This was considered necessary in the interest 2f saf-ty in that
the Radsafe Office could better evaluate the total dose rate to which the aim
craft trews were subjected,
In order to obtain true (4.e., net) realings, it
was 2 simple matter for the Radsafe OF“ICE to analyze a group of successive
reported readings and cetermine this infcrmtion by sbservaticn cf rite cf
decay cr increase,
Hcwever, in the interest of flexibility in the repcrting
procedure, a further provision was made for the aireraft crew t. indicate, as
necessary, the value they considered aircraft background.
(£) Sinee the original plan for cloud tracicing considered
the early warning value of the ground monitor stations of the New York Opera
tions Office, aEC (NYKOPO), the “off-scale" situation on RONGERIK fcr the
GRavO shot dictated the placement of higher range radiac instmments at
eritical locations.
«$s a consequence, roentgen-range instruments were placed
at all the outlying task force weather detachments (:(WURO, KUSAIE, PONAPE
and the temporary water-based facility at RONCERIK) to eusent the 100 ar/hr
NYKXOPO instruments,
In addition, the WsKE Island station, operated by the
Weather Bureau for NYKOPO, ws provided with e rcentgen-range instrument
and requested to make special reports to the task fcree if end when intensitie:
paseed through 10, 50, 100 and 500 or/hr.
alsc, the P2V squadron of T 7.3
based on KWAJALEIN was directed tc perform post-shot radsafe surveillance fcr
that atoll and report readings dircctly to the ‘ask fsrec headquarters.
It
was emphasized on C.STLE that ground nonitcr stiticns arc 2 vital part of any
successful cloud tracking plain, primerily because of the fact that aircraft
surveys can only iniicate the intensities seen by a raciac instrument in the
air at some particular altitude,
although certain extensions and analysis of
the totality of such aerial survey data can reughly indicate whether or act