TY - JOUR
T1 - Time Resolved Reflectivity Measurements of Convective Clouds
AU - Dolan, Brenda
AU - Kollias, Pavlos
AU - van den Heever, Susan C.
AU - Rasmussen, Kristen L.
AU - Oue, Mariko
AU - Luke, Edward
AU - Lamer, Katia
AU - Treserras, Bernat P.
AU - Haddad, Ziad
AU - Stephens, Graeme
AU - Chandrasekar, V.
N1 - Publisher Copyright:
© 2023 Jet Propulsion Laboratory, California Institute of Technology and The Authors. Government sponsorship acknowledged.
PY - 2023/11/28
Y1 - 2023/11/28
N2 - National Aeronautics and Space Administration's Investigations of Convective Updrafts (INCUS) mission aims to document convective mass flux through changes in the radar reflectivity (ΔZ) in convective cores captured by a constellation of three Ka-band radars sampling the same convective cells over intervals of 30, 90, and 120 s. Here, high spatiotemporal resolution observations of convective cores from surface-based radars that use agile sampling techniques are used to evaluate aspects of the INCUS measurement approach using real observations. Analysis of several convective cells confirms that large coherent ΔZ structure with measurable signal (>5 dB) can occur in less than 30 s and are correlated with underlying convective motions. The analysis indicates that the INCUS mission radar footprint and along track sampling are adequate to capture most of the desirable ΔZ signals. This unique demonstration of reflectivity time-lapse provides the framework for estimating convective mass flux independent from Doppler techniques with future radar observations.
AB - National Aeronautics and Space Administration's Investigations of Convective Updrafts (INCUS) mission aims to document convective mass flux through changes in the radar reflectivity (ΔZ) in convective cores captured by a constellation of three Ka-band radars sampling the same convective cells over intervals of 30, 90, and 120 s. Here, high spatiotemporal resolution observations of convective cores from surface-based radars that use agile sampling techniques are used to evaluate aspects of the INCUS measurement approach using real observations. Analysis of several convective cells confirms that large coherent ΔZ structure with measurable signal (>5 dB) can occur in less than 30 s and are correlated with underlying convective motions. The analysis indicates that the INCUS mission radar footprint and along track sampling are adequate to capture most of the desirable ΔZ signals. This unique demonstration of reflectivity time-lapse provides the framework for estimating convective mass flux independent from Doppler techniques with future radar observations.
UR - https://www.scopus.com/pages/publications/85177680413
U2 - 10.1029/2023GL105723
DO - 10.1029/2023GL105723
M3 - Article
AN - SCOPUS:85177680413
SN - 0094-8276
VL - 50
JO - Geophysical Research Letters
JF - Geophysical Research Letters
IS - 22
M1 - e2023GL105723
ER -