{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:37.123245", "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-10_to_2024-Feb-13_281.0_35.0"}, "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": 2024020001281}, "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 10 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 13 2024"}, "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": "Heat wave"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 53108.539928690094}, "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": ["United States"]}, "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": 35.0}, "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": 281.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "281.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 280.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 283.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 34.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 36.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-80.15, 35.25], [-80.25, 35.5], [-80.15, 35.75], [-80.25, 36.0], [-80.03, 36.53], [-79.5, 36.75], [-79.25, 36.65], [-79.0, 36.75], [-78.75, 36.65], [-78.5, 36.75], [-77.97, 36.53], [-77.82, 36.18], [-77.75, 36.15], [-77.5, 36.25], [-77.25, 36.15], [-77.0, 36.25], [-76.47, 36.03], [-76.25, 35.5], [-76.35, 35.25], [-76.25, 35.0], [-76.47, 34.47], [-77.0, 34.25], [-77.25, 34.35], [-77.32, 34.32], [-77.47, 33.97], [-78.0, 33.75], [-78.25, 33.85], [-78.32, 33.82], [-78.47, 33.47], [-79.0, 33.25], [-79.25, 33.35], [-79.5, 33.25], [-80.03, 33.47], [-80.25, 34.0], [-80.15, 34.25], [-80.25, 34.5], [-80.15, 34.75], [-80.25, 35.0], [-80.15, 35.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.25, 34.5], [-80.14999999999998, 34.75], [-80.25, 35.0], [-80.14999999999998, 35.25], [-80.25, 35.5], [-80.14999999999998, 35.75], [-80.25, 36.0], [-80.02999999999997, 36.53], [-79.5, 36.75], [-79.25, 36.65], [-79.0, 36.75], [-78.75, 36.65], [-78.5, 36.75], [-77.97000000000003, 36.53], [-77.82, 36.18], [-77.75, 36.15], [-77.5, 36.25], [-77.25, 36.15], [-77.0, 36.25], [-76.47000000000003, 36.03], [-76.25, 35.5], [-76.47000000000003, 34.97], [-76.82, 34.82], [-76.97000000000003, 34.47], [-77.32, 34.32], [-77.47000000000003, 33.97], [-78.0, 33.75], [-78.25, 33.85], [-78.32, 33.82], [-78.47000000000003, 33.47], [-79.0, 33.25], [-79.25, 33.35], [-79.5, 33.25], [-80.02999999999997, 33.47], [-80.25, 34.0], [-80.14999999999998, 34.25], [-80.25, 34.5]]]]}, "2024-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.25, 34.5], [-80.14999999999998, 34.75], [-80.25, 35.0], [-80.14999999999998, 35.25], [-80.25, 35.5], [-80.14999999999998, 35.75], [-80.25, 36.0], [-80.02999999999997, 36.53], [-79.5, 36.75], [-79.25, 36.65], [-79.0, 36.75], [-78.75, 36.65], [-78.5, 36.75], [-77.97000000000003, 36.53], [-77.82, 36.18], [-77.75, 36.15], [-77.5, 36.25], [-77.25, 36.15], [-77.0, 36.25], [-76.47000000000003, 36.03], [-76.25, 35.5], [-76.35000000000002, 35.25], [-76.25, 35.0], [-76.47000000000003, 34.47], [-77.0, 34.25], [-77.25, 34.35], [-77.32, 34.32], [-77.47000000000003, 33.97], [-78.0, 33.75], [-78.25, 33.85], [-78.32, 33.82], [-78.47000000000003, 33.47], [-79.0, 33.25], [-79.25, 33.35], [-79.5, 33.25], [-80.02999999999997, 33.47], [-80.25, 34.0], [-80.14999999999998, 34.25], [-80.25, 34.5]]]]}, "2024-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-80.25, 34.5], [-80.14999999999998, 34.75], [-80.25, 35.0], [-80.14999999999998, 35.25], [-80.25, 35.5], [-80.14999999999998, 35.75], [-80.25, 36.0], [-80.02999999999997, 36.53], [-79.5, 36.75], [-79.25, 36.65], [-79.0, 36.75], [-78.75, 36.65], [-78.5, 36.75], [-77.97000000000003, 36.53], [-77.82, 36.18], [-77.75, 36.15], [-77.5, 36.25], [-77.25, 36.15], [-77.0, 36.25], [-76.47000000000003, 36.03], [-76.25, 35.5], [-76.35000000000002, 35.25], [-76.25, 35.0], [-76.47000000000003, 34.47], [-77.0, 34.25], [-77.25, 34.35], [-77.32, 34.32], [-77.47000000000003, 33.97], [-78.0, 33.75], [-78.25, 33.85], [-78.32, 33.82], [-78.47000000000003, 33.47], [-79.0, 33.25], [-79.25, 33.35], [-79.5, 33.25], [-80.02999999999997, 33.47], [-80.25, 34.0], [-80.14999999999998, 34.25], [-80.25, 34.5]]]]}, "2024-02-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.52999999999997, 35.53], [-77.0, 35.75], [-76.47000000000003, 35.53], [-76.25, 35.0], [-76.47000000000003, 34.47], [-77.0, 34.25], [-77.52999999999997, 34.47], [-77.75, 35.0], [-77.52999999999997, 35.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.057436484852474}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 8.283121424087561}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.26916657575407, 16.75405333101702, 15.291836082279644, 14.820185566692146]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.093070051116797, 17.935312608933998, 16.222269191065436, 14.820185566692146]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.713094480931548, 9.315311243831987, 7.871432139867411, 6.6531490411980485]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.34053228455349, 10.057436484852474, 8.666256270505073, 6.6531490411980485]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.528246491694669, 1.895080366904318, 1.605256448912839, 1.4006361775157012]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.638762173342215, 2.005083912390201, 1.7339790965595343, 1.4006361775157012]}}