Simulating an MJO Event using COAWST: CYGNSS Satellite Mission Support

Xiaowen Li1,2

Taka Iguchi3,2

Stephen Nicolls2

1Morgan State University

2NASA Goddard Space Flight Center3University of Maryland, College Park

Cyclone Global Navigation Satellite System

Use delayed Doppler mapping instrument to measure sea surface roughness and retrieve sea surface wind

Madden-Julian Oscillation

Project Objectives:

1. To use DYNAMO field campaign as a pre-launch case study for CYGNSS mission, with the emphasis on the surface wind perturbations associated with organized convective systems.

2. To use the COAWST model output to derive synthetic CYGNSS data for the purpose of facilitating pre-launch researches and algorithm testing/development.

COAWST model simulation of DYNAMO October MJO event

COAWST model simulated DYNAMO October MJO event

WRF WRF+ROMS

Surface Rainfall Hovmoller Diagram, 30km resolution

COAWST model simulated DYNAMO October MJO event

WRF WRF+ROMS

SST Hovmoller Diagram, 30km resolution

COAWST model simulated DYNAMO October MJO event

WRF WRF+ROMS

Surface Rainfall Hovmoller Diagram, 4km resolution

COAWST model simulated DYNAMO October MJO event

WRF WRF+ROMS

SST Hovmoller Diagram, 4km resolution

COAWST model simulated DYNAMO October MJO eventSurface Rainfall Hovmoller Diagram, 4km resolution

WRF WRF+ROM

COAWST model simulated DYNAMO October MJO event

WRF WRF+ROMS

SST Hovmoller Diagram, 4km resolution

Future Plans

Repeat the current case study using the latest COAWST release;

Next step is to add SWAN model to the coupled COAWST simulations, and to compared model simulations with DYNAMO observations.