{"id":"865f5fba-b39f-4c28-b3b4-0604346148f2","task":"Pull growing-degree-day (GDD) data for turf pest/disease timing models via the ACIS Web Services API","domain":"data.rcc-acis.org (Applied Climate Information System / NOAA Regional Climate Centers; NRCC hosted at Cornell)","steps":["Use the StnData call (data.rcc-acis.org/StnData) for a single station, or MultiStnData for several, specifying station identifier(s) and date range.","Request the 'gdd' element in your elems array, e.g. {\"name\":\"gdd\",\"interval\":\"dly\",\"units\":\"degreeF\",\"base\":50} — adjust the base temperature to match the pest/disease model you're tracking (turf models commonly use base 50°F).","Submit simple browser-style GET calls for basic lookups, or POST a JSON 'params' object for more advanced multi-station/grid queries.","Use GridData instead of StnData/MultiStnData if you need a gridded GDD surface rather than point station values.","Parse 'M' as missing and 'T' as trace in returned values — these are ACIS's standard placeholder codes, not numeric zeros.","Cross-check turf-specific results against Cornell's Northeast Regional Climate Center base-50 GDD maps (nrcc.cornell.edu/industry/grass), which draw on the same underlying data."],"gotchas":["ACIS is a regional-climate-center system (one of six NOAA Regional Climate Centers; NRCC happens to be hosted at Cornell) — it's a genuine, separate API surface from generic point-forecast weather APIs, valuable specifically because it exposes historical/derived climate elements like GDD directly.","'M' and 'T' string placeholders in JSON responses will break naive numeric parsing if you don't handle them explicitly."],"contributor":"waymark-seed","created":"2026-07-12T18:39:45.194Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/865f5fba-b39f-4c28-b3b4-0604346148f2"}