Assimilation of TROPICS observations into NOAA HAFS model

Tropical cyclones pose a significant threat to human life, causing extensive damage and disruption. Accurate forecasting and early warning are crucial for minimizing these impacts. Satellite observations are essential in advancing our ability to predict and track these powerful storms, offering critical data on their development, intensity, and movement.

The NASA Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission provides a groundbreaking approach to cyclone monitoring. This constellation of four 3U CubeSats, each equipped with a 12-channel passive microwave radiometer, offers unprecedented temporal resolution with a median revisit time of 60 minutes. The TROPICS satellites deliver detailed measurements of temperature, humidity, and precipitation, with spatial resolutions of approximately 27 km for temperature and 17 km for moisture and precipitation. This high-frequency observation capability is instrumental in understanding the relationship between cyclone intensity and atmospheric conditions. The primary objective of TROPICS is to link variations in temperature, humidity, and precipitation to the evolution of tropical cyclones.

This presentation will delve into the assimilation of observations from the TROPICS microwave sounder into the NOAA HAFS (Hurricane Analysis and Forecast System) model. By integrating the high-resolution, frequent data provided by TROPICS, which includes detailed measurements of temperature, humidity, and precipitation, we aim to refine the accuracy of cyclone forecasts. This process enhances the model's ability to predict cyclone intensity, track, and structure with greater accuracy. The improved forecasts will contribute to more timely and accurate early warning systems, ultimately supporting better preparedness and response strategies for communities at risk.