A new method utilizing hyperspectral infrared sounders is developed to estimate Cloud Top Height (CTH) for deep convective clouds associated with hurricane, or Tropical Cyclone (TC). By analyzing measurements from the Cross-track Infrared Sounder (CrIS), and further validating with radiative transfer simulations, we found an inverted-V spectral feature in the ozone (O3) band near 9.6 μm for thick clouds, and its depth, designated as H_index, has a strong correlation with CTH. Using a linear regression, a formula is derived to calculate the CTH based on H_index and Brightness Temperature (BT) in other three channels. This method effectively captures the cloud structure of a TC's eyewall and surrounding rainbands, with an error of -0.05 ± 0.19 km (or -0.41 ± 1.96%). Further analysis reveals that the retrieved temperature profiles near hurricane’s eye from a new single Field of View sounder products (SiFSAP) from CrIS agree reasonably well with the reanalysis data from MERRA-2 and ERA-5. This method can be easily applied to operationally monitor hurricane cloud and its development, and the estimated CTH can be also used as a-priori to improve the retrieval products.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.