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Variable Catalog

All variables configured in config.yaml. Each key maps to one data stream with its own downloader, Zarr store, and output variables.

Overview

Key Source Provider NRT Output variables
sst CMEMS Satellite L4 yes analysed_sst, analysis_error, sst_fdist
ssh CMEMS Satellite L4 yes adt, sla, ugos, vgos, gke
mld CMEMS Model (NEMO) no mld
chl CMEMS Satellite L4 no chl, chl_fdist
seapodym CMEMS Model (SEAPODYM) no mnkc_epi, mnkc_umeso, mnkc_mumeso, npp, zooc, zeu
o2 CMEMS Model (PISCES) no o2_0, o2_100, o2_500, o2_1000
fsle AVISO FTP yes fsle_max
eddies AVISO FTP yes eddy geometry and track fields
atm-instante CDS / ERA5 Reanalysis no msl, u10, v10, tcc, wind_mean, wind_max, wind_std
atm-accum-avg CDS / ERA5 Reanalysis no tp, avg_iews, avg_inss, ekman_pumping, ekman_anom, …
radiation CDS / ERA5 Reanalysis no slhf, ssrd, tisr
waves CDS / ERA5 Reanalysis no swh, mdts

Detailed descriptions

sst — Sea Surface Temperature

  • Dataset (rep): METOFFICE-GLO-SST-L4-REP-OBS-SST
  • Dataset (nrt): METOFFICE-GLO-SST-L4-NRT-OBS-SST-V2
  • Resolution: 0.05°, resampled to 0.25°
  • Variables: analysed SST (°C), analysis error (K), distance to nearest SST front (km)

ssh — Sea Surface Height

  • Dataset (rep): cmems_obs-sl_glo_phy-ssh_my_allsat-l4-duacs-0.125deg_P1D
  • Dataset (nrt): cmems_obs-sl_glo_phy-ssh_nrt_allsat-l4-duacs-0.125deg_P1D
  • Resolution: 0.125°, resampled to 0.25°
  • Variables: ADT (m), SLA (m), geostrophic velocities u/v (m s⁻¹), geostrophic kinetic energy (m² s⁻²)

mld — Mixed Layer Depth

  • Dataset (rep): cmems_mod_glo_phy_my_0.083deg_P1D-m
  • Resolution: 0.083°, resampled to 0.25°
  • Variables: mixed layer depth (m) — depth where density increase corresponds to a 0.2 °C temperature decrease relative to 10 m

chl — Chlorophyll-a

  • Dataset (rep): cmems_obs-oc_glo_bgc-plankton_my_l4-gapfree-multi-4km_P1D
  • Resolution: 4 km, resampled to 0.25°
  • Variables: CHL concentration (mg m⁻³), distance to nearest CHL front (km)

seapodym — Micronekton (SEAPODYM)

  • Dataset (rep): cmems_mod_glo_bgc_my_0.083deg-lmtl_P1D-i
  • Variables: epipelagic, upper/migrant mesopelagic micronekton (g m⁻²); net primary productivity (mg m⁻² day⁻¹); zooplankton carbon (g m⁻²); euphotic depth (m)

o2 — Dissolved Oxygen

  • Dataset (rep): cmems_mod_glo_bgc_my_0.25deg_P1D-m
  • Resolution: 0.25° (native)
  • Variables: O₂ concentration (mmol m⁻³) at 0, 100, 500, and 1000 m depth

fsle — Finite-Size Lyapunov Exponents

  • Source: AVISO FTP (delayed-time and NRT)
  • Variables: backward FSLE maximum eigenvalue (days⁻¹)

eddies — Mesoscale Eddies

  • Source: AVISO META3.2 eddy trajectory atlas
  • Variables: eddy center coordinates, track ID, effective and speed radii, amplitude, mean speed; distance and normalised distance to nearest cyclonic/anticyclonic eddy center

atm-instante — Instantaneous Atmospheric Variables

  • Source: ERA5 hourly single-level reanalysis (CDS)
  • Variables: mean sea level pressure (hPa), 10 m wind components u/v (m s⁻¹), total cloud cover, wind speed statistics (mean, max, std)

atm-accum-avg — Accumulated / Averaged Atmospheric Variables

  • Source: ERA5 hourly single-level reanalysis (CDS)
  • Variables: total precipitation (mm), surface wind stress components (N m⁻²), daily Ekman pumping velocity and anomaly (m s⁻¹), lagged Ekman anomalies (3, 7, 14 days), upwelling event counts (3, 7, 14-day windows)

radiation — Surface Radiation

  • Source: ERA5 hourly single-level reanalysis (CDS)
  • Variables: surface latent heat flux (W m⁻²), surface solar radiation downwards (W m⁻²), TOA incident solar radiation (W m⁻²)

waves — Ocean Waves

  • Source: ERA5 hourly single-level reanalysis (CDS)
  • Variables: significant height of combined wind waves and swell (m), mean direction of total swell (degrees)

Special variables (compile-only)

These keys are not downloaded — they are generated during the compile step.

Key Description
bathy Ocean bathymetry from ETOPO 2022 v1 at 0.25°. Mean depth (m) and std per grid cell. Source files are configured via data_file (0.25° grid, used by compiler and CSV extraction) and data_file_hires (native resolution, used by SHP extraction) in config.yaml.
moon Lunar illumination (%) computed from the ephem library. Same value broadcast across all grid cells per day.