Observation Plans in West Pacific Jianping Li 1), Guoxiong Wu 1) and Fan Wang 2) 1) LASG, Institute of Atmospheric Physics (IAP), Chinese Academy of Sciences (CAS), Beijing , China 2) Institute of Oceanology, Chinese Academy of Sciences, Qingdao , China January 26-27, 2007, Yokohama, Japan

Air-sea flux tower at Xi- Sha Island NEC NECC SEC Kuroshio Mooring east of Luzon Island Indian Ocean Western Pacific Ocean SCS ITF Subsurface mooring off Java coast Subsurface mooring at Karimata strait Schematic observation plan of air-sea-land interaction in the AIPO Region MAHASRI PALAU AIP O CTCZ NPOIMS

The National Basic Research Program of China /973 Program Ocean-Atmosphere Interaction over the Joining Area of Asia and Indian-Pacific Ocean (AIPO) and Its Impact on the Short-Term Climate Variation in ChinaOcean-Atmosphere Interaction over the Joining Area of Asia and Indian-Pacific Ocean (AIPO) and Its Impact on the Short-Term Climate Variation in China Period: Period: Low Frequency Variability of Subtropical North Pacific Ocean Circulation and Its Impacts on the Dynamic Environment of the Marginal Seas (NPOIMS (NPOIMS) Period: Period:

The theme of the program is to identify the characteristics, patterns, and causes of air-sea interactions over the AIPO joining area and the intrinsic mechanisms of their impacts on the short-term climate anomalies over China. AIPO: KEY SCIENTIFIC ISSUES

 Reveal the characteristics in seasonal to inter-annual time scale of the air-sea interaction in the AIPO joining area, and propose a theoretical framework about the impacts of these processes on the short-term climate variation in this area;  Develop a new-generation OGCM and its coupled climate model, and propose theories and methods for improving the prediction of the East Asian climate variation on seasonal to interannual scales;  Construct a fine spacial resolution ocean data assimilation system for the AIPO joining area, achieve significant advances in the predictability of ENSO and East Asian monsoon, and also provide a set of high- quality ocean re-analysis data in this area. AIPO: Specified Objectives

NPOIMS: Objectives To understand Mechanisms and improve the Prediction of low- frequency variability of dynamic environments of the marginal seas and the adjacent deep ocean.

(1) reveal the processes and mechanisms of energy and mass exchange between the subtropical North Pacific and the marginal seas; (2) establish both conceptual and numerical models of this dynamic exchange system, and assess the predictability of low frequency variability of the marginal seas and the adjacent deep ocean; (3) develop theories of interaction between deep ocean and marginal seas. NPOIMS:Specified Objectives NPOIMS: Specified Objectives

AIPO: Western Pacific gyre interaction between tropics and subtropics and its relationship with the western Pacific anticyclone EA-WP Heat Transport WPSH

3.Mechanisms of the Kuroshio variations over the East China Sea and its impacts on the shelf dynamic environment 1. Dynamics and mechanisms of interior ocean variability and its influences on the western boundary current 2. Mechanisms of variations of the current system at the Kuroshio origin and impacts on the water and energy exchange through Luzon Strait NPOIMS: Some NPOIMS: Some Key Scientific Issues

Cross section stations Moorings by 973 projects Moorings by 863 project From 2008 Mooring Array and Cross Section Observation Plan for Field Experiment Submersible mooring system and cross-section observations in the sea east of Luzon: Eight long-term (2-3 years) submersible moorings and several (3-4) cruise observational cross-sections near 18  N and in the East China Sea. Data: upper ocean temperature-salinity, flow velocity and air-sea interface flux, and other key parameters.

West Pacific Observation from AIPO and NPOIMS Target: Understanding Air-sea interaction in Western Pacific and Western North Pacific monsoon (1) Period: (2) Observation regions: Luzon Strait, East and West of the Luzon Island (18N), East China Sea, and Western Pacific; (3) Observation items/Data: Mooring at the eight stations, upper ocean temperature-salinity, flow velocity, and RV cruises. (3) Observation items/Data: Mooring at the eight stations, upper ocean temperature-salinity, flow velocity, air-sea interface flux and RV cruises.