{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:28.502055", "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": "2024-Feb-15_to_2024-Feb-19_257.0_20.5"}, "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": 2024020000376}, "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": "February 15 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 19 2024"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 103923.64862008163}, "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"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": 20.5}, "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": 257.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 255.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 260.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 23.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-101.97, 22.03], [-101.82, 21.68], [-101.75, 21.65], [-101.5, 21.75], [-100.97, 21.53], [-100.82, 21.18], [-100.75, 21.15], [-100.5, 21.25], [-99.97, 21.03], [-99.82, 20.68], [-99.47, 20.53], [-99.25, 20.0], [-99.47, 19.47], [-100.0, 19.25], [-100.25, 19.35], [-100.5, 19.25], [-101.0, 19.46], [-101.5, 19.25], [-101.75, 19.35], [-102.0, 19.25], [-102.25, 19.35], [-102.5, 19.25], [-102.75, 19.35], [-103.0, 19.25], [-103.25, 19.35], [-103.5, 19.25], [-103.75, 19.35], [-104.0, 19.25], [-104.25, 19.35], [-104.5, 19.25], [-105.03, 19.47], [-105.18, 19.82], [-105.53, 19.97], [-105.75, 20.5], [-105.53, 21.03], [-105.18, 21.18], [-105.15, 21.25], [-105.25, 21.5], [-105.04, 22.0], [-105.25, 22.5], [-105.15, 22.75], [-105.25, 23.0], [-105.03, 23.53], [-104.5, 23.75], [-104.25, 23.65], [-104.0, 23.75], [-103.47, 23.53], [-103.32, 23.18], [-102.97, 23.03], [-102.75, 22.5], [-102.85, 22.25], [-102.8, 22.13], [-102.5, 22.25], [-101.97, 22.03]]]]}}, "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": {"2024-02-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-105.25, 21.0], [-105.03, 21.53], [-104.5, 21.75], [-105.03, 21.97], [-105.25, 22.5], [-105.15, 22.75], [-105.25, 23.0], [-105.03, 23.53], [-104.5, 23.75], [-103.97000000000003, 23.53], [-103.75, 23.0], [-103.85000000000002, 22.75], [-103.75, 22.5], [-103.93, 22.07], [-103.5, 22.25], [-102.97000000000003, 22.03], [-102.82, 21.68], [-102.47000000000003, 21.53], [-102.25, 21.0], [-102.35000000000002, 20.75], [-102.25, 20.5], [-102.47000000000003, 19.97], [-103.0, 19.75], [-103.25, 19.85], [-103.5, 19.75], [-103.75, 19.85], [-104.0, 19.75], [-104.25, 19.85], [-104.5, 19.75], [-105.03, 19.97], [-105.25, 20.5], [-105.15, 20.75], [-105.25, 21.0]], [[-104.25, 21.65], [-104.18, 21.68], [-104.07, 21.93], [-104.5, 21.75], [-104.25, 21.65]]]]}, "2024-02-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": 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-5.9906472671031565}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.5963310333298213}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.069531310215666, 13.757957939896983, 12.714913810002997, 13.221485157980624, 14.448360600279557]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.534149032072094, 9.603577822337058, 8.952542936203088, 9.130384222557325, 10.874432634465563]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.8450766818815407, -3.1559260276676913, -4.1736104229988245, -3.948418341781335, -2.57062292481014]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.3285780707661274, 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