📊 HyCAM.ftorch.2d.seq2.seed.333.nl.22.128.ep.100 diagnostics: Variability  |  Climatology vs Obs  |  Overview

Atmospheric Variability Diagnostics — HyCAM.ftorch.2d.seq2.seed.333.nl.22.128.ep.100

Wheeler-Kiladis spectra + CLIVAR-MJO suite (lag cross-correlation, combined EOF, composite life cycle, seasonal wavenumber-frequency). Daily/6-hourly model output; anomalies = smoothed-climatology removed, 20-100 day band-pass. Obs reference = ERA-Interim (US-CLIVAR MJO-suite / MDTF digest) for OLR & winds + TRMM for precip (NOT the ERA5 used on the climatology page). model obs = ERA-Interim / TRMM

1. Lag cross-correlation (IO precip base; lag-lon top, lag-lat bottom)

Eastward tilt = eastward MJO propagation; precip (color), U850 (contours).

HyCAM winter
ERA-Interim winter
HyCAM summer
ERA-Interim summer
HyCAM annual
ERA-Interim annual

2. EOF analysis of OLR / U850 / U200 (15S-15N)

Top: combined multivariate EOF1 & EOF2 (the MJO mode pair, longitudinal structure). Below: per-variable seasonal EOF spatial maps — model vs ERA.

HyCAM combined EOF1&2
Winter EOF spatial maps (EOF 1-4):
HyCAM OLR
ERA-I OLR
HyCAM U850
ERA-I U850
HyCAM U200
ERA-I U200
Summer EOF spatial maps (EOF 1-4):
HyCAM OLR
ERA-I OLR
HyCAM U850
ERA-I U850
HyCAM U200
ERA-I U200

3. Composite life cycle (8 MJO phases; OLR anom + 850-hPa wind)

HyCAM summer (May-Oct)
HyCAM winter (Nov-Apr)
ERA-Interim life cycle

4. Seasonal wavenumber-frequency spectra (per variable, 15S-15N)

Eastward (positive freq) MJO band at wavenumber 1, 30-80 day.

Winter:
HyCAM OLR
ERA-I OLR
HyCAM U850
ERA-I U850
HyCAM U200
ERA-I U200
HyCAM PRECT
TRMM PRECT
Summer:
HyCAM OLR
ERA-I OLR
HyCAM U850
ERA-I U850
HyCAM U200
ERA-I U200
HyCAM PRECT
TRMM PRECT

5. AMWG variability package (Wheeler-Kiladis + MJO index + χ200)

Full Wheeler-Kiladis wavenumber-frequency spectra (raw/background/normalized, sym+asym, vs NOAA/NCEP obs) plus the MJO index line plots, χ200 velocity-potential Hovmöller, and precip-rate histogram are on the diagnostic-package pages:

Generated by run_vardiag.sh. Case=HyCAM.ftorch.2d.seq2.seed.333.nl.22.128.ep.100. Obs ERA/TRMM reused from xsongsio (E3SM).