Sea Ice Monitoring and Prediction in Japan Meteorological Agency April 2003 Office of Marine Prediction Climate and Marine Department Japan Meteorological Agency

Data Flow of Sea Ice Monitoring in JMA GMS NOAA Meteorological Satellite Center DMSP SSM/I NOAA NESDIS Coastal Observation Wakkanai, Kitamiesashi, Mombetsu, Abashiri, Nemuro, Kushiro Aircraft Observation Marine/Land Defense Force, Japan Coast Guard Coastal RADAR Hokkaido University Sea Ice Section Japan Meteorological Agency Sea Ice Analysis Sea Ice Forecast Sapporo District Observatory Hakodate Marine Observatory Users Fishery Sight Seeing Other Nations

Numerical Sea Ice Model Area ; Southwest edge is located 42N, 140E.

Number of the grid ; 71*71.

Resolution ; 12.5km

Parameters SST ; Analyzed by NOAA AVHRR (MCSST method), and GMS Sea Surface Current ; statistical value Weather Prediction data ; RSM(Regional Spectral Model) and GSM(Global Spectral Model) 6hourly Equipment 3500/E540PS HITACHI

Sea Ice Monitoring System in JMA(Future Plan)

Data Acquisition Satellite Observation GMS ， NOAA DMSP RADARSAT ADEOS-Ⅱ

Observation by

Aircraft Ship

Coastal Observation

Global Analysis Sea Ice Analysis in the Sea of Okhotsk Whole Okhotsk Model Near Real Time Global Sea Ice Data Forecast of Sea Ice Conditions of Whole Okhotsk Sea Ice Analysis in the Coastal Area of Hokkaido Coastal Sea Ice Model Forecast of Sea Ice Conditions near Hokkaido Boundary condition of Climate Prediction Model and Weather Prediction Model Sea Ice Information Near Hokkaido, Okhotsk and, Global Statistical Data Arcive Users Web in JMA

RADARSAT Data Utilization 1. Purpose S ea Ice Analysis in detail in the Sea of Okhotsk For the appropriate initial data for Coastal Sea Ice Model and Whole Okhotsk Model Estimation of Sea Ice Thickness ( if possible ) Estimation of Sea Surface Current ( if possible ) 2. Requirement in JMA to for RADARSAT data Every 5 day’s data Ascending and Descending ScanSAR Wide mode 4 Scenes a day from December to May In a year, about 150 scenes are necessary for sea ice monitoring.

Process of Making the initial data for Sea Ice Model Analysis Sea Surface Temperature Sea Surface Current Initial Data Sea Ice Concentration/Extent Sea Ice Thickness Numerical Sea Ice Model Numerical Weather Prediction Feedback Forecast Data Sea Ice Concentration/Extent Sea Ice Thickness At the first time of running the model, sea ice thickness is determined 20cm.