Details:

Journal Title:
Journal of Atmospheric and Oceanic Technology
Personal Author:
Maier, Jessica ; Knuteson, Robert
Maier, Jessica ; Knuteson, Robert Less -
NOAA Program & Office:
OAR (Oceanic and Atmospheric Research) ; CIMSS (Cooperative Institute for Meteorological Satellite Studies)
OAR (Oceanic and Atmospheric Research) ; CIMSS (Cooperative Institute for Meteorological Satellite Studies) Less -
Description:
Hyperspectral infrared satellite observations from geostationary platforms allow for the retrieval of temperature and water vapor measurements with higher temporal and vertical resolution than was previously available. The Chinese satellite Fengyun-4A (FY-4A) includes the Geostationary Interferometric Infrared Sounder (GIIRS), which has the ability to measure vertical profiles of temperature and water vapor from space at times when ground-based upper-air soundings are not available and can fill an important need in short-range weather prediction. In this study, convective available potential energy (CAPE) and lifted index (LI), which are used for forecasting atmospheric instability, were computed using the SHARPpy algorithm used by the NWS Storm Prediction Center. However, remote infrared and microwave sensing is lacking detailed information in the boundary layer, so the addition of the NOAA Meteorological Assimilation and Data Ingest System (MADIS) surface data may be necessary in order to get accurate temperature and moisture measurement near the surface. This study uses 10–16 May 2019 in the coastal region near Hong Kong for evaluating the use of hourly surface observations combined with satellite soundings from FY-4A GIIRS at 2-h intervals. The GIIRS plus MADIS surface-based CAPE and LI estimates are compared to estimates derived from low-Earth-orbiting (LEO) SNPP and NOAA-20 from NOAA, MetOp from EUMETSAT, NWP reanalysis, and local radiosondes. In the case study, the 2-h sampling interval of the GIIRS geostationary sounder was able to capture the rapid transition (16 h) from a stable to an unstable atmosphere in both CAPE and LI. The use of surface observations with satellite soundings gave mixed results, possibly due to the complex terrain near Hong Kong.
Keywords:
[+]
Atmospheric Science Ocean Engineering
Source:
Journal of Atmospheric and Oceanic Technology, 39(2), 259-270
DOI:
https://doi.org/10.1175/jtech-d-21-0080.1
ISSN:
0739-0572;1520-0426;
Format:
PDF
Publisher:
American Meteorological Society
Document Type:
Journal Article
Funding:
Grant no. NA19OAR0220090
Rights Information:
Other
Compliance:
Library
Main Document Checksum:
[+]
urn:sha256:bbf40fa1acc75e523bce36048cfa7ae840dfc088de96af3103bb139d7564e39f
Download URL:
https://repository.library.noaa.gov/view/noaa/60538/noaa_60538_DS1.pdf
File Type:

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