Introduction

This Data Report contains the data obtained from the observations made by JMA in 1998 together with the explanations. The observations include the followings:

1. Oceanographic Observations on board Research Vessels
   Oceanographic observations are conducted in the seas adjacent to Japan and in the western North Pacific on board six vessels: the Ryofu Maru, the Keifu Maru (both operated by Climate and Marine Department at the Headquarters), the Kofu Maru (operated by Hakodate Marine Observatory), the Shumpu Maru (by Kobe Marine Observatory), the Chofu Maru (by Nagasaki Marine Observatory) and the Seifu Maru (by Maizuru Marine Observatory).

2. Coastal Water Temperature Observations
   JMA has carried out water temperature observations at the coastal stations. Historical time series of 10 day and monthly mean temperatures, daily observations and hourly observations are available in this CD-ROM.

3. Ocean Data Buoy Observations
   Ocean data buoys are operated to make marine meteorological and oceanographic observationsin the seas around Japan since 1973.