{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:34.322469", "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-Mar-21_to_2023-Mar-24_301.0_15.5"}, "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": 2023030000732}, "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": "March 21 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 24 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 145935.73952604184}, "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": ["Martinique", "Saint Lucia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.Atlantic-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Caribbean Sea", "North Atlantic Ocean"]}, "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": 15.5}, "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": 301.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "301.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 16.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.5, 16.75], [-60.97, 16.53], [-60.75, 16.0], [-60.97, 15.47], [-61.5, 15.25], [-62.03, 15.47], [-62.25, 16.0], [-62.03, 16.53], [-61.5, 16.75]]]]}, "2023-03-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.15, 15.75], [-62.25, 16.0], [-62.03, 16.53], [-61.5, 16.75], [-60.97, 16.53], [-60.82, 16.18], [-60.75, 16.15], [-60.68, 16.18], [-60.53, 16.53], [-60.0, 16.75], [-59.75, 16.65], [-59.5, 16.75], [-59.25, 16.65], [-59.0, 16.75], [-58.75, 16.65], [-58.68, 16.68], [-58.53, 17.03], [-58.0, 17.25], [-57.75, 17.15], [-57.5, 17.25], [-57.25, 17.15], [-57.0, 17.25], [-56.75, 17.15], [-56.5, 17.25], [-56.25, 17.15], [-56.0, 17.25], [-55.75, 17.15], [-55.5, 17.25], [-55.25, 17.15], [-55.0, 17.25], [-54.75, 17.15], [-54.5, 17.25], [-53.97, 17.03], [-53.75, 16.5], [-53.97, 15.97], [-54.32, 15.82], [-54.47, 15.47], [-54.82, 15.32], [-54.97, 14.97], [-55.5, 14.75], [-55.75, 14.85], [-56.0, 14.75], [-56.25, 14.85], [-56.5, 14.75], [-56.75, 14.85], [-57.0, 14.75], [-57.25, 14.85], [-57.32, 14.82], [-57.47, 14.47], [-58.0, 14.25], [-58.25, 14.35], [-58.32, 14.32], [-58.47, 13.97], [-58.82, 13.82], [-58.97, 13.47], [-59.5, 13.25], [-60.03, 13.47], [-60.18, 13.82], [-60.25, 13.85], [-60.32, 13.82], [-60.47, 13.47], [-61.0, 13.25], [-61.25, 13.35], [-61.5, 13.25], [-62.03, 13.47], [-62.25, 14.0], [-62.04, 14.5], [-62.25, 15.0], [-62.15, 15.25], [-62.25, 15.5], [-62.15, 15.75]]]]}, "2023-03-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.15, 15.75], [-62.25, 16.0], [-62.03, 16.53], [-61.5, 16.75], [-60.97, 16.53], [-60.82, 16.18], [-60.75, 16.15], [-60.68, 16.18], [-60.53, 16.53], [-60.0, 16.75], [-59.75, 16.65], [-59.5, 16.75], [-59.25, 16.65], [-59.0, 16.75], [-58.75, 16.65], [-58.68, 16.68], [-58.53, 17.03], [-58.0, 17.25], [-57.75, 17.15], [-57.5, 17.25], [-57.25, 17.15], [-57.0, 17.25], [-56.75, 17.15], [-56.5, 17.25], [-56.25, 17.15], [-56.0, 17.25], [-55.75, 17.15], [-55.5, 17.25], [-55.25, 17.15], [-55.0, 17.25], [-54.75, 17.15], [-54.5, 17.25], [-53.97, 17.03], [-53.75, 16.5], [-53.97, 15.97], [-54.32, 15.82], [-54.47, 15.47], [-54.82, 15.32], [-54.97, 14.97], [-55.5, 14.75], [-55.75, 14.85], [-56.0, 14.75], [-56.25, 14.85], [-56.5, 14.75], [-56.75, 14.85], [-57.0, 14.75], [-57.25, 14.85], [-57.32, 14.82], [-57.47, 14.47], [-58.0, 14.25], [-58.25, 14.35], [-58.32, 14.32], [-58.47, 13.97], [-58.82, 13.82], [-58.97, 13.47], [-59.5, 13.25], [-60.03, 13.47], [-60.18, 13.82], [-60.25, 13.85], [-60.32, 13.82], [-60.47, 13.47], [-61.0, 13.25], [-61.25, 13.35], [-61.5, 13.25], [-62.03, 13.47], [-62.25, 14.0], [-62.04, 14.5], [-62.25, 15.0], [-62.15, 15.25], [-62.25, 15.5], [-62.15, 15.75]]]]}, "2023-03-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.03, 16.03], [-61.5, 16.25], [-61.25, 16.15], [-61.0, 16.25], [-60.75, 16.15], [-60.68, 16.18], [-60.53, 16.53], [-60.0, 16.75], [-59.75, 16.65], [-59.5, 16.75], [-59.25, 16.65], [-59.0, 16.75], [-58.75, 16.65], [-58.68, 16.68], [-58.53, 17.03], [-58.0, 17.25], [-57.75, 17.15], [-57.5, 17.25], 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-1.4552792871009501}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.010268967955354}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.893361043470975, 24.045201787203382, 24.128772040485273, 24.028405153006133]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.893361043470975, 23.566130019198454, 23.61679126770997, 23.68686215085188]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7981212768690398, -1.0144934852798266, -0.9475724213608275, -1.0743789080661656]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7981212768690398, -1.2646222155489113, -1.1576310195145538, -1.4552792871009501]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3151282696145759, -1.768916003947016, -1.6395352080912848, -1.8448179201493937]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3151282696145759, -2.249958052414368, -2.0043051149334787, -2.416617648370182]}}