{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:18.485190", "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": "2023-May-27_to_2023-May-31_258.0_24.5"}, "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": 2023050000834}, "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": "May 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 31 2023"}, "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": 103993.70649986979}, "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": 24.5}, "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": 258.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "258.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 256.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 260.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-98.97, 24.53], [-98.75, 24.0], [-98.85, 23.75], [-98.75, 23.5], [-98.97, 22.97], [-99.5, 22.75], [-99.75, 22.85], [-100.0, 22.75], [-100.25, 22.85], [-100.5, 22.75], [-100.75, 22.85], [-101.0, 22.75], [-101.3, 22.88], [-101.47, 22.47], [-102.0, 22.25], [-102.53, 22.47], [-102.68, 22.82], [-103.03, 22.97], [-103.25, 23.5], [-103.15, 23.75], [-103.18, 23.82], [-103.25, 23.85], [-103.5, 23.75], [-104.03, 23.97], [-104.25, 24.5], [-104.03, 25.03], [-103.68, 25.18], [-103.53, 25.53], [-103.0, 25.75], [-102.75, 25.65], [-102.68, 25.68], [-102.65, 25.75], [-102.75, 26.0], [-102.53, 26.53], [-102.18, 26.68], [-102.03, 27.03], [-101.5, 27.25], [-100.97, 27.03], [-100.82, 26.68], [-100.47, 26.53], [-100.32, 26.18], [-99.97, 26.03], [-99.82, 25.68], [-99.47, 25.53], [-99.25, 25.0], [-99.35, 24.75], [-99.32, 24.68], [-98.97, 24.53]]]]}}, "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": 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"description": "Maximum t2m anomaly recorded over entire duration", "value": -6.0694135476974225}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.677273483346161}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.77326674784672, 18.96150271709223, 18.460787519885457, 19.440500105648482, 18.237542036563354]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.75723558766174, 14.871161348906071, 14.674212178520008, 15.381700254772738, 16.025587698571883]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.566884678306585, -3.9077969651914404, -4.3827692888908745, -3.4104845040372656, -2.9092669726422806]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily 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