{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:35.070624", "data_source": "ERA5", "website": "http://wexa.jamstec.go.jp", "Author": "Patrick Martineau"}, "event_id": {"name": "Event ID", "description": "A unique identifier based on: beginning_date, end_date, longitude, and latitude", "value": "2022-Oct-17_to_2022-Oct-19_255.0_31.5"}, "event_label": {"name": "Event label", "description": "Integer-valued grid identifier that uniquely labels each detected extreme event in space and time, consistent with the corresponding labels stored in the NetCDF dataset.", "value": 2022100000710}, "status": {"name": "Status", "description": "An ongoing event denotes an event that lasts up to the latest data available. These events are subject to change as newer data is added.", "value": false}, "start_date": {"name": "Start date", "description": "First date on which grid points are under the influence of an event", "value": "October 17 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 19 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "figures_available": {"name": "Figures available", "description": "True if figures were pre-generated for this event", "value": true}, "detection_var": {"name": "Detection variable", "description": "Variable used for the detection scheme", "value": "t2m"}, "event_type": {"name": "Event type", "description": "Type of the event detected", "value": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 81868.20200197394}, "countries_affected": {"name": "Countries affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the countries affected by an event during its lifetime.", "value": ["Mexico", "United States"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America"]}, "oceans_affected": {"name": "Ocean basins affected", "description": "The ArcGIS geocoding API (https://developers.arcgis.com/rest/geocode/) is used to obtain a list of all the ocean basins affected by an event during its lifetime.", "value": []}, "center_lat": {"name": "Center latitude", "description": "Latitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 31.5}, "center_lon": {"name": "Center longitude", "description": "Longitude of the maximum time-integrated standardized t2m anomalies. Only t2m of the same polarity as the events are considered (positive T2m for a HW, for instance). The centre is thus representative of both the severity and persistence of anomalies.", "value": 255.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "255.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 30.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-109.25, 31.5], [-109.03, 32.03], [-108.5, 32.25], [-108.25, 32.15], [-108.18, 32.18], [-108.03, 32.53], [-107.5, 32.75], [-107.25, 32.65], [-107.0, 32.75], [-106.75, 32.65], [-106.5, 32.75], [-106.25, 32.65], [-106.0, 32.75], [-105.47, 32.53], [-105.32, 32.18], [-105.25, 32.15], [-105.12, 32.2], [-105.25, 32.5], [-105.03, 33.03], [-104.5, 33.25], [-103.97, 33.03], [-103.82, 32.68], [-103.47, 32.53], [-103.32, 32.18], [-103.25, 32.15], [-103.0, 32.25], [-102.47, 32.03], [-102.32, 31.68], [-101.97, 31.53], [-101.75, 31.0], [-101.85, 30.75], [-101.75, 30.5], [-101.97, 29.97], [-102.5, 29.75], [-103.03, 29.97], [-103.18, 30.32], [-103.25, 30.35], [-103.32, 30.32], [-103.47, 29.97], [-104.0, 29.75], [-104.25, 29.85], [-104.5, 29.75], [-104.75, 29.85], [-105.0, 29.75], [-105.25, 29.85], [-105.5, 29.75], [-106.03, 29.97], [-106.18, 30.32], [-106.53, 30.47], [-106.68, 30.82], [-106.8, 30.88], [-106.97, 30.47], [-107.5, 30.25], [-108.03, 30.47], [-108.18, 30.82], [-108.25, 30.85], [-108.5, 30.75], [-109.03, 30.97], [-109.25, 31.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Central-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.5, 30.75], [-109.03, 30.97], [-109.25, 31.5], [-109.03, 32.03], [-108.5, 32.25], [-108.25, 32.15], [-108.18, 32.18], [-108.03, 32.53], [-107.5, 32.75], [-107.25, 32.65], [-107.0, 32.75], [-106.75, 32.65], [-106.5, 32.75], [-106.25, 32.65], [-106.0, 32.75], [-105.47, 32.53], [-105.32, 32.18], [-105.25, 32.15], [-105.12, 32.2], [-105.25, 32.5], [-105.03, 33.03], [-104.5, 33.25], [-103.97000000000003, 33.03], [-103.82, 32.68], [-103.47000000000003, 32.53], [-103.32, 32.18], [-103.25, 32.15], [-103.0, 32.25], [-102.47000000000003, 32.03], [-102.32, 31.68], [-101.97000000000003, 31.53], [-101.75, 31.0], [-101.85000000000002, 30.75], [-101.75, 30.5], [-101.97000000000003, 29.97], [-102.5, 29.75], [-103.02999999999997, 29.97], [-103.18, 30.32], [-103.25, 30.35], [-103.32, 30.32], [-103.47000000000003, 29.97], [-104.0, 29.75], [-104.25, 29.85], [-104.5, 29.75], [-104.75, 29.85], [-105.0, 29.75], [-105.25, 29.85], [-105.5, 29.75], [-106.03, 29.97], [-106.18, 30.32], [-106.53, 30.47], [-106.68, 30.82], [-106.80000000000001, 30.88], [-106.97, 30.47], [-107.5, 30.25], [-108.03, 30.47], [-108.18, 30.82], [-108.25, 30.85], [-108.5, 30.75]]]]}, "2022-10-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.5, 30.75], [-109.03, 30.97], [-109.25, 31.5], [-109.03, 32.03], [-108.5, 32.25], [-108.25, 32.15], [-108.18, 32.18], [-108.03, 32.53], [-107.5, 32.75], [-107.25, 32.65], [-107.0, 32.75], [-106.75, 32.65], [-106.5, 32.75], [-106.25, 32.65], [-106.0, 32.75], [-105.47, 32.53], [-105.32, 32.18], [-105.25, 32.15], [-105.12, 32.2], [-105.25, 32.5], [-105.03, 33.03], [-104.5, 33.25], [-103.97000000000003, 33.03], [-103.82, 32.68], [-103.47000000000003, 32.53], [-103.32, 32.18], [-103.25, 32.15], [-103.0, 32.25], [-102.47000000000003, 32.03], [-102.32, 31.68], [-101.97000000000003, 31.53], [-101.75, 31.0], [-101.85000000000002, 30.75], [-101.75, 30.5], [-101.97000000000003, 29.97], [-102.5, 29.75], [-103.02999999999997, 29.97], [-103.18, 30.32], [-103.25, 30.35], [-103.32, 30.32], [-103.47000000000003, 29.97], [-104.0, 29.75], [-104.25, 29.85], [-104.5, 29.75], [-104.75, 29.85], [-105.0, 29.75], [-105.25, 29.85], [-105.5, 29.75], [-106.03, 29.97], [-106.18, 30.32], [-106.53, 30.47], [-106.68, 30.82], [-106.80000000000001, 30.88], [-106.97, 30.47], [-107.5, 30.25], [-108.03, 30.47], [-108.18, 30.82], [-108.25, 30.85], [-108.5, 30.75]]]]}, "2022-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-108.5, 30.75], [-109.03, 30.97], [-109.25, 31.5], [-109.03, 32.03], [-108.5, 32.25], [-108.25, 32.15], [-108.18, 32.18], [-108.03, 32.53], [-107.5, 32.75], [-107.25, 32.65], [-107.0, 32.75], [-106.75, 32.65], [-106.5, 32.75], [-106.25, 32.65], [-106.0, 32.75], [-105.47, 32.53], [-105.32, 32.18], [-105.25, 32.15], [-105.12, 32.2], [-105.25, 32.5], [-105.03, 33.03], [-104.5, 33.25], [-103.97000000000003, 33.03], [-103.82, 32.68], [-103.47000000000003, 32.53], [-103.32, 32.18], [-103.25, 32.15], [-103.0, 32.25], [-102.47000000000003, 32.03], [-102.32, 31.68], [-101.97000000000003, 31.53], [-101.75, 31.0], [-101.85000000000002, 30.75], [-101.75, 30.5], [-101.97000000000003, 29.97], [-102.5, 29.75], [-103.02999999999997, 29.97], [-103.18, 30.32], [-103.25, 30.35], [-103.32, 30.32], [-103.47000000000003, 29.97], [-104.0, 29.75], [-104.25, 29.85], [-104.5, 29.75], [-104.75, 29.85], [-105.0, 29.75], [-105.25, 29.85], [-105.5, 29.75], [-106.03, 29.97], [-106.18, 30.32], [-106.53, 30.47], [-106.68, 30.82], [-106.80000000000001, 30.88], [-106.97, 30.47], [-107.5, 30.25], [-108.03, 30.47], [-108.18, 30.82], [-108.25, 30.85], [-108.5, 30.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.8656397067903185}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.423246151004216}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.442076435406364, 12.796610433095168, 13.21536283615933]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.215789497391427, 9.634615886836684, 11.254282487910586]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.321081388436701, -5.796570838973766, -5.152086225602182]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.321187245203475, -6.8656397067903185, -5.901140399825465]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4832934046638313, -1.6296970601206322, -1.4499796448913993]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6562615601291826, -1.984590217519065, -1.6164972277027447]}}