Station Amsterdam (files amsterdam.*) ================= This station was occupied by BPR's from POL during 1984-88 and from the University of Grenoble, France during 1991-94. POL instrumentation 1984-85 was strain gauge pressure sensor with temperature also recorded. For 1986-1988, a Paroscientific Digiquartz pressure transducer was used with temperature also recorded. As stated above, the datum of the pressure measurements is not maintained from one deployment to the next. See Vassie et al., Journal of Geophysical Research, 99(C1), 937-949, 1994. For each POL record a long term instrumental drift has been removed. Station positions (lat, lon) for the southern Indian Ocean should be regarded as being uncertain to 1 km (or 1 minute) in these pre-GPS days - if this is an important factor then notes of the scientists in charge can be consulted as to SATNAV etc. information. file amsterdam.8485: The pressure time series is essentially flat over most of its length but with a drop of approximately 20 mbar between days 210 and 240 (August 1984). From comparisons with a second pressure sensor on the rig, which malfunctioned at day 271, we believe the rapid fall is an instrumental effect of the strain gauge. See Vassie et al., Journal of Geophysical Research, 99(C1), 937-949, 1994.