fix(usgs_glm): fix ScienceBase User-Agent and URL field (Spike 4)#48
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ScienceBase blocks requests without a User-Agent and returns 503 -- this was the root cause of the Spike 4 failures on 2026-06-06. Also corrects the URL field lookup: ScienceBase returns download URLs in the 'url' field, not 'downloadUrl' or 'uri' as the code assumed. All three request sites (manifest, crosswalk, NetCDF zip) are updated. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Summary
AprovanLabs-DataScience/1.0 (requests)to fix the root cause of Spike 4 failuresurlfield, notdownloadUrloruri— all three call sites updated (manifest fetch, crosswalk CSV, NetCDF zip)Spike 4 findings (APR-181)
ScienceBase status: API catalog endpoint is now reachable (HTTP 200 with proper User-Agent). File downloads are currently returning 503 (separate, transient service issue — not the same as the missing header bug).
Dataset confirmed:
lake_id_crosswalk.csvhasMNDOW_IDcolumn → maps MN DOW IDs to USGSsite_id(NHD format)lake_temp_preds_GLM_NLDAS.zip(~3.9 GB) contains depth-resolved daily predictions 1979–2022Comparison — ScienceBase GLM vs Planetary Computer STAC:
Recommendation: Use ScienceBase GLM for historical trend charts (complete, no gaps, depth-resolved). Continue using STAC for recent/live surface temperature observations. These are complementary, not competing.
Test plan
fetch_from_sciencebase()reaches ScienceBase catalog without 503🤖 Generated with Claude Code