Observations varied from site to site, but among the sites they included all tl usual kinds of surface weather observations and also rawinsondes twice daily, cloud photographs, and radarscope photographs. During these two e-week period observations were also made on trangs-lagoon runs aboard an M-boat (LCM) and on ocean runs outside the reef in an aircraft rescue boat (ARP). On lagoon and ocean runs surface water temperatures were measured through making bucket haul at frequent intervals. During the remainder of the year, outside these two intensive-study peric the observations were restricted to the usual comprehensive hourly observatior at FRED and to daily, other sites, semi-monthliy, and monthly rainfall observations at varic Circumstances did not permit making regular rainfall observati< “Except for the intensive-study perlods, presented for FRED, only the daily rainfall values Sources of other data for FRED are given in Appendix III throughout the entire year at all of the sites listed above. It is hoped non theless that the observations obtained will be found to be useful in suppleme ing the observations for the two intensive-study periods. Those who wish to use the primary data appearing in Appendix I or listec Appendix II may find Appendix III helpful to them. Appendix III lists sever: major sources for additional meteorological data for Eniwetok. @, GENERAL GEOGRAPHIC RELATIONSHIPS> Eniwetok is gituated in the Marshall Islands, a group of islands lying 1 of the Gilbert Islands and east of the Caroline Islands. 11.4°N,, 162.3°E. It is located at Most of the atolls which make up the Marshall Islands are distributed along two chains which are nearly parallel and trend northwestwa 34 large part of the factual information contained in this section was obtained from "Geology of Bikini and Nearby Atolls" by Emery, Tracy, Ladd et USGS Prof. Paper No, 260-A, Part I, 1954, The reader is referred to this pv cation for a more detailed presentation. ” me 6 Rae Be The easternmost is the Ratak (Sunrise) Chain; the westernmost, the Ralik (Su