Monterey Bay Late September 2026 Multi-Platform Empirical Observation Dossier
Scientific Research Question: What do empirical offshore moored buoy observations (NDBC 46042) and inshore harbor thermistor and tidal observations (CO-OPS 9413450) establish regarding observed wind conditions, surface water temperatures, and water level variability across Monterey Bay during September 23–28, 2026?
Assurance Level
RAW_BYTE_PRIMARY
100% Retained NOAA Files
Offshore Mean SST
16.44°C
NDBC 46042 (1m hull)
Inshore Harbor Temp
16.66°C
CO-OPS 9413450 (0.8m MLLW)
Mean Observed Wind
7.38 m/s
Max gust: 16.0 m/s
Pillar I: Empirically Supported Claims (MB-C1 to MB-C4)
Offshore SST Stability
Offshore surface water temperature at NDBC Buoy 46042 averaged 16.44°C (min: 16°C, max: 16.8°C) across 687 valid 10-min primary observations.
Inshore Harbor Thermal Baseline
Inshore Monterey Harbor water temperature at CO-OPS 9413450 averaged 16.66°C (min: 15.5°C, max: 17.3°C) across 1,236 valid 6-min primary observations.
Observed Wind Conditions at NDBC 46042
Observed wind speed at NDBC 46042 averaged 7.38 m/s (peak: 13 m/s, gust: 16 m/s) with prevailing north-northwesterly directions across 703 valid observations.
Observed Water-Level Variability at CO-OPS 9413450
Observed water-level variability at CO-OPS 9413450 exhibited a range of 1.594 m (trough: 0.231 m MLLW, crest: 1.825 m MLLW) across 1,236 continuous observations.
Pillar II: Epistemic Invariants & Blocked Overclaims
Harbor Thermistor = Independent Replication
NDBC and CO-OPS share the NOAA institutional family and operate at physically non-equivalent depths (1m hull vs 0.8m harbor basin pier).
Physical Temperature = Ecological Mortality
Physical water temperature and tidal ranges cannot substantiate marine ecological mortality or kelp forest collapse without direct biological diver/ROV surveys.
Point Buoy = Central California Shelf Homogeneity
Point buoy 46042 observations cannot be extrapolated across the entire Central California coastal shelf without validated hydrodynamic spatial models.
Pillar III: Scientific Comparison Contract Engine
Rigorous 18-dimension evaluation between offshore moored buoy (NDBC 46042) and coastal harbor thermistor (CO-OPS 9413450).
These series overlap in time and region but measure physically distinct sensing domains (1m_below_waterline / surface_mixed_layer_thermistor vs. 0.8m_below_MLLW / subsurface_harbor_water_column) and cannot be interpreted as direct temperature replication.
PARTIAL — Both sources measure thermal temperature domain ('sea_surface_temperature' vs. 'water_temperature'), but with different sensing targets ('surface_mixed_layer_thermistor' vs. 'subsurface_harbor_water_column').
INCOMPATIBLE — Vertical sensing datums differ: '1m_below_waterline' (skin/upper column) vs. '0.8m_below_MLLW' (subsurface/benthic). Surface skin infrared radiometry cannot be equated to subsurface or benthic thermistors.
SAME_INSTITUTION_LINEAGE — Replication: Blocked
This is an arithmetic difference (-0.22°C) between NDBC 46042 mean SST (16.44°C) and CO-OPS 9413450 mean water temp (16.66°C). These measurements have different physical support, sensing datums (1m hull thermistor vs 0.8m pier subsurface MLLW), and locations (27NM offshore vs inshore harbor basin), and this value is NOT a direct spatial thermal-gradient estimate.
Evaluated Dimensions (18/18)
Pillar IV: Cryptographic Provenance Walkback
Step backwards from the 16.44°C offshore SST and 16.66°C harbor temperature to the retained raw byte artifacts on disk.
NDBC Buoy 46042 SST Walkback
End-to-End Cryptographic Provenance Walkback
Step backward from any displayed scientific metric to its verified mathematical transformation, retained raw disk artifact, retrieval event, and canonical institution.
Rendered Value: 16.44 degC
User-facing scientific metric 'Offshore Mean Sea Surface Temperature (NDBC 46042)' rendered in chart or dossier view.
Normalized Telemetry Record (rec-monterey-ndbc-wtmp-mean)
Structured schema-validated observation record within the OceanSig dataset engine.
Processing Run: DAILY_MEAN_AGGREGATION
Mathematical transformation executed by 'apps/api/src/investigations/monterey-bay-2026/pipeline.ts'.
Retained Disk Artifact: ndbc_46042_stdmet_202609.txt
Primary source file stored in local repository storage with exact SHA-256 byte verification.
Retrieval Event: 2026-09-28
Automated network ingestion event from 'https://www.ndbc.noaa.gov/data/5day2/46042_5day.txt'.
Canonical Provider: NOAA National Data Buoy Center
Authoritative scientific publisher/institution responsible for instrument deployment and calibration.
CO-OPS 9413450 Harbor Temp Walkback
End-to-End Cryptographic Provenance Walkback
Step backward from any displayed scientific metric to its verified mathematical transformation, retained raw disk artifact, retrieval event, and canonical institution.
Rendered Value: 16.66 degC
User-facing scientific metric 'Inshore Harbor Mean Water Temperature (CO-OPS 9413450)' rendered in chart or dossier view.
Normalized Telemetry Record (rec-monterey-coops-wtmp-mean)
Structured schema-validated observation record within the OceanSig dataset engine.
Processing Run: DAILY_MEAN_AGGREGATION
Mathematical transformation executed by 'apps/api/src/investigations/monterey-bay-2026/pipeline.ts'.
Retained Disk Artifact: coops_9413450_water_temp_202609.csv
Primary source file stored in local repository storage with exact SHA-256 byte verification.
Retrieval Event: 2026-09-28
Automated network ingestion event from 'https://api.tidesandcurrents.noaa.gov/api/prod/datagetter?product=water_temperature&application=OceanSig&begin_date=20260923&end_date=20260928&station=9413450&time_zone=GMT&units=metric&format=csv'.
Canonical Provider: NOAA Center for Operational Oceanographic Products and Services
Authoritative scientific publisher/institution responsible for instrument deployment and calibration.