nicksteiner/sardine-demo-data

SARdine demo data — Pacaya-Samiria full-frame NISAR COGs

Full-frame Cloud Optimized GeoTIFFs backing the SARdine README hero demo. SARdine streams these directly in the browser via HTTP Range reads — the hero link renders in seconds while reading only the tiles in view.

File	Contents
pacaya_full_hh.tif	HHHH gamma0 backscatter, raw power float32 (~500 MB)
pacaya_full_hv.tif	HVHV gamma0 backscatter, raw power float32 (~495 MB)

• Source granule: NISAR_L2_PR_GCOV_015_147_A_175_2005_DHDH_A_20260320T104408_20260320T104443_X05013_N_F_J_001 (NISAR L2 GCOV Beta, ASF DAAC, acquired 2026-03-20 — Pacaya-Samiria National Reserve / Ucayali floodplain, Peru)
• Grid: frequency A, 20 m posting, EPSG:32718, 16704×16272 px, NaN nodata, subswath mask applied
• Format: COG — DEFLATE + floating-point predictor, 512-px blocks, 6-level overview pyramid
• Produced with: openSEPPO seppo_nisar_gcov_convert 0.7.0 (-vars HHHH HVHV -f A -pwr -of COG)

Open in SARdine: dual-pol RGB composite deep link

NISAR data courtesy NASA/JPL-Caltech and ASF DAAC. NASA data products are openly distributable; these files are derived subset-free conversions of the public GCOV granule.