Impact of TROPICS Radiances on Tropical Cyclone Prediction in an OSSE

Author:

Christophersen Hui W.1,Dahl Brittany A.2,Dunion Jason P.2,Rogers Robert F.3,Marks Frank D.3,Atlas Robert4,Blackwell William J.5

Affiliation:

1. Naval Research Laboratory, Monterey, CA

2. Cooperative Institute for Marine and Atmospheric Studies, University of Miami, and NOAA/Atlantic Oceanographic and Meteorological Laboratory/Hurricane Research Division, Miami, FL

3. NOAA/Atlantic Oceanographic and Meteorological Laboratory/Hurricane Research Division, Miami, FL

4. NOAA/Atlantic Oceanographic and Meteorological Laboratory, Miami, FL (retired)

5. Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA

Abstract

AbstractAs part of the NASA Earth Venture-Instrument program, the Time-Resolved Observations of Precipitation structure and storm Intensity with a Constellation of Smallsats (TROPICS) mission, to be launched in January 2022, will deliver unprecedented rapid-update microwave measurements over the tropics that can be used to observe the evolution of the precipitation and thermodynamic structure of tropical cyclones (TCs) at meso- and synoptic scales. TROPICS consists of six CubeSats, each hosting a passive microwave radiometer that provides radiance observations sensitive to atmospheric temperature, water vapor, precipitation, and precipitation-size ice particles. In this study, the impact of TROPICS all-sky radiances on TC analyses and forecasts is explored through a regional mesoscale observing system simulation experiment (OSSE). The results indicate that the TROPICS all-sky radiances can have positive impacts on TC track and intensity forecasts, particularly when some hydrometeor state variables and other state variables of the data assimilation system that are relevant to cloudy radiance assimilation are updated. The largest impact on the model analyses is seen in the humidity fields, regardless of whether or not there are radiances assimilated from other satellites. TROPICS radiances demonstrate large impact on TC analyses and forecasts when other satellite radiances are absent. The assimilation of the all-sky TROPICS radiances without default radiances leads to a consistent improvement in the low- and mid-tropospheric temperature and wind forecasts throughout the five-day forecasts, but only up to 36 h lead time in the humidity forecasts at all pressure levels. This study illustrates the potential benefits of TROPICS data assimilation for TC forecasts and provides a potentially streamlined pathway for transitioning TROPICS data from research to operations post-launch.

Publisher

American Meteorological Society

Subject

Atmospheric Science

Cited by 11 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Results from the NASA Tropics Mission After One Year in Orbit;IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium;2024-07-07

2. Cubesat Validation for New Spaceborne Atmospheric Observations;IGARSS 2024 - 2024 IEEE International Geoscience and Remote Sensing Symposium;2024-07-07

3. Enhancing Severe Weather Prediction With Microwave All‐Sky Radiance Assimilation: The 10 August 2020 Midwest Derecho;Geophysical Research Letters;2024-01-22

4. Sampled Together: Assessing the Value of Simultaneous Collocated Measurements for Optimal Satellite Configurations;Bulletin of the American Meteorological Society;2024-01

5. On-orbit results from the NASA TROPICS mission;CubeSats and SmallSats for Remote Sensing VI;2022-09-30

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