September 10 case

Description

  • Clear skies, with periods of cirrus
  • G1 sampled from 0954 to 1242 LT

Central Facility sounding

Early morning

  • CAPE: 0.0 J/kg, CIN: 0.0 J/kg, LCL: 954.33 hPa, LFC: NA
  • Stable~neutral temperature profile in the lower troposphere
  • Very dry layers at 800-700 hPa, and 600-400 hPa.

Around noon

  • CAPE: 0.0 J/kg, CIN: 0.0 J/kg, LCL: 820.63 hPa, LFC: NA
  • Surface has warmed by ~ 8°C but still stable & warm lower troposphere does not allow a surface parcel to go up
  • The atmosphere above PBL has become even drier
  • Still calm wind within and right above the PBL, up to ~ 3 m/s

CTP-HIlow diagram

CTP-HIlow diagram review

MODIS Terra image and G1 flight routes

GOES visible reflectance snap shots from late morning to afternoon

GOES vs WRF timeseries comparison from late morning to afternoon

Inner-domain average of short-wave reflectance

Comparing WRF (ratio of SWUPT/SWDNT) and GOES (post-processed to 5-km grid over SGP)

  • Fraction of non-missing data across the inner domain

  • Inner-domain average SW reflectance

Inner-domain average Liquid Water Path

  • Fraction of non-missing data across the inner domain

  • Inner-domain average LWP

  • Inner-domain average cloud fraction (fraction of grid columns with LWP > 1.0 g/m2)