{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 17:04:36.918175", "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": "2025-Apr-08_to_2025-Apr-14_307.5_4.5"}, "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": 2025040001472}, "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": "April 08 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 14 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 209831.74571649122}, "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": ["Brazil", "French Guiana", "Suriname"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": ["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": 4.5}, "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": 307.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "307.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 313.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-55.75, 3.65], [-55.68, 3.68], [-55.53, 4.03], [-55.0, 4.25], [-54.75, 4.15], [-54.68, 4.18], [-54.65, 4.25], [-54.75, 4.5], [-54.65, 4.75], [-54.75, 5.0], [-54.65, 5.25], [-54.75, 5.5], [-54.53, 6.03], [-54.0, 6.25], [-53.75, 6.15], [-53.5, 6.25], [-52.97, 6.03], [-52.82, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97, 5.53], [-51.82, 5.18], [-51.47, 5.03], [-51.32, 4.68], [-50.97, 4.53], [-50.82, 4.18], [-50.75, 4.15], [-50.5, 4.25], [-50.25, 4.15], [-50.0, 4.25], [-49.75, 4.15], [-49.5, 4.25], [-49.25, 4.15], [-49.0, 4.25], [-48.75, 4.15], [-48.5, 4.25], [-48.25, 4.15], [-48.0, 4.25], [-47.47, 4.03], [-47.25, 3.5], [-47.35, 3.25], [-47.32, 3.18], [-47.25, 3.15], [-47.0, 3.25], [-46.47, 3.03], [-46.25, 2.5], [-46.35, 2.25], [-46.25, 2.0], [-46.47, 1.47], [-47.0, 1.25], [-47.53, 1.47], [-47.68, 1.82], [-48.03, 1.97], [-48.18, 2.32], [-48.25, 2.35], [-48.5, 2.25], [-48.75, 2.35], [-49.0, 2.25], [-49.25, 2.35], [-49.32, 2.32], [-49.47, 1.97], [-50.0, 1.75], [-50.5, 1.96], [-51.0, 1.75], [-51.25, 1.85], [-51.32, 1.82], [-51.47, 1.47], [-51.82, 1.32], [-51.97, 0.97], [-52.5, 0.75], [-52.75, 0.85], [-53.0, 0.75], [-53.25, 0.85], [-53.5, 0.75], [-53.75, 0.85], [-54.0, 0.75], [-54.25, 0.85], [-54.5, 0.75], [-55.03, 0.97], [-55.18, 1.32], [-55.53, 1.47], [-55.68, 1.82], [-55.75, 1.85], [-56.0, 1.75], [-56.53, 1.97], [-56.75, 2.5], [-56.65, 2.75], [-56.75, 3.0], [-56.53, 3.53], [-56.0, 3.75], [-55.75, 3.65]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "Equatorial.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-53.02999999999997, 5.03], [-52.5, 5.25], [-51.97000000000003, 5.03], [-51.75, 4.5], [-51.97000000000003, 3.97], [-52.5, 3.75], [-53.02999999999997, 3.97], [-53.25, 4.5], [-53.02999999999997, 5.03]]]]}, "2025-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.0, 4.75], [-54.52999999999997, 4.97], [-54.75, 5.5], [-54.52999999999997, 6.03], [-54.0, 6.25], [-53.47000000000003, 6.03], [-53.30000000000001, 5.62], [-53.0, 5.75], [-52.47000000000003, 5.53], [-52.31999999999999, 5.18], [-51.97000000000003, 5.03], [-51.75, 4.5], [-51.97000000000003, 3.97], [-52.5, 3.75], [-52.75, 3.85], [-53.0, 3.75], [-53.52999999999997, 3.97], [-53.75, 4.5], [-53.64999999999998, 4.75], [-53.69999999999999, 4.88], [-54.0, 4.75]]]]}, "2025-04-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-54.0, 4.75], [-54.52999999999997, 4.97], [-54.75, 5.5], [-54.52999999999997, 6.03], [-54.0, 6.25], [-53.47000000000003, 6.03], [-53.30000000000001, 5.62], [-53.0, 5.75], [-52.47000000000003, 5.53], [-52.31999999999999, 5.18], [-52.25, 5.15], [-52.0, 5.25], [-51.47000000000003, 5.03], [-51.31999999999999, 4.68], [-50.97000000000003, 4.53], [-50.81999999999999, 4.18], [-50.75, 4.15], [-50.5, 4.25], [-50.25, 4.15], [-50.0, 4.25], [-49.75, 4.15], [-49.5, 4.25], [-49.25, 4.15], [-49.0, 4.25], [-48.75, 4.15], [-48.5, 4.25], [-48.25, 4.15], [-48.0, 4.25], [-47.47000000000003, 4.03], [-47.25, 3.5], [-47.35000000000002, 3.25], [-47.31999999999999, 3.18], [-47.25, 3.15], [-47.0, 3.25], [-46.47000000000003, 3.03], [-46.25, 2.5], [-46.35000000000002, 2.25], [-46.25, 2.0], [-46.47000000000003, 1.47], [-47.0, 1.25], [-47.52999999999997, 1.47], [-47.68000000000001, 1.82], [-48.02999999999997, 1.97], [-48.18000000000001, 2.32], [-48.25, 2.35], [-48.5, 2.25], [-48.75, 2.35], [-49.0, 2.25], [-49.25, 2.35], [-49.31999999999999, 2.32], [-49.47000000000003, 1.97], [-50.0, 1.75], [-50.52999999999997, 1.97], [-50.68000000000001, 2.32], [-50.75, 2.35], [-51.0, 2.25], [-51.52999999999997, 2.47], [-51.75, 3.0], [-51.64999999999998, 3.25], [-51.68000000000001, 3.32], [-51.75, 3.35], [-52.0, 3.25], [-52.52999999999997, 3.47], [-52.68000000000001, 3.82], [-52.75, 3.85], [-53.0, 3.75], [-53.52999999999997, 3.97], [-53.75, 4.5], [-53.64999999999998, 4.75], [-53.69999999999999, 4.88], [-54.0, 4.75]]]]}, "2025-04-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 3.0], [-56.52999999999997, 3.53], [-56.0, 3.75], [-55.75, 3.65], [-55.68000000000001, 3.68], [-55.52999999999997, 4.03], [-55.0, 4.25], [-54.75, 4.15], [-54.5, 4.25], [-54.25, 4.15], [-54.18000000000001, 4.18], [-54.02999999999997, 4.53], [-53.68000000000001, 4.68], [-53.64999999999998, 4.75], [-53.69999999999999, 4.88], [-54.0, 4.75], [-54.52999999999997, 4.97], [-54.75, 5.5], [-54.52999999999997, 6.03], [-54.0, 6.25], [-53.47000000000003, 6.03], [-53.30000000000001, 5.62], [-53.0, 5.75], [-52.47000000000003, 5.53], [-52.31999999999999, 5.18], [-52.25, 5.15], [-52.0, 5.25], [-51.47000000000003, 5.03], [-51.31999999999999, 4.68], [-50.97000000000003, 4.53], [-50.81999999999999, 4.18], [-50.75, 4.15], [-50.5, 4.25], [-50.25, 4.15], [-50.0, 4.25], [-49.75, 4.15], [-49.5, 4.25], [-49.25, 4.15], [-49.0, 4.25], [-48.75, 4.15], [-48.5, 4.25], [-48.25, 4.15], [-48.0, 4.25], [-47.47000000000003, 4.03], [-47.25, 3.5], [-47.35000000000002, 3.25], [-47.31999999999999, 3.18], [-47.25, 3.15], [-47.0, 3.25], [-46.47000000000003, 3.03], [-46.25, 2.5], [-46.35000000000002, 2.25], [-46.25, 2.0], [-46.47000000000003, 1.47], [-47.0, 1.25], [-47.52999999999997, 1.47], [-47.68000000000001, 1.82], [-48.02999999999997, 1.97], [-48.18000000000001, 2.32], [-48.25, 2.35], [-48.5, 2.25], [-48.75, 2.35], [-49.0, 2.25], [-49.25, 2.35], [-49.31999999999999, 2.32], [-49.47000000000003, 1.97], [-50.0, 1.75], [-50.5, 1.96], [-51.0, 1.75], [-51.25, 1.85], [-51.31999999999999, 1.82], [-51.47000000000003, 1.47], [-51.81999999999999, 1.32], [-51.97000000000003, 0.97], [-52.5, 0.75], [-52.75, 0.85], [-53.0, 0.75], [-53.25, 0.85], [-53.5, 0.75], [-53.75, 0.85], [-54.0, 0.75], [-54.25, 0.85], [-54.5, 0.75], [-55.02999999999997, 0.97], [-55.18000000000001, 1.32], [-55.52999999999997, 1.47], [-55.68000000000001, 1.82], [-55.75, 1.85], [-56.0, 1.75], [-56.52999999999997, 1.97], [-56.75, 2.5], [-56.64999999999998, 2.75], [-56.75, 3.0]]]]}, "2025-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 3.0], [-56.52999999999997, 3.53], [-56.0, 3.75], [-55.75, 3.65], [-55.68000000000001, 3.68], [-55.52999999999997, 4.03], [-55.0, 4.25], [-54.75, 4.15], [-54.68000000000001, 4.18], [-54.64999999999998, 4.25], [-54.75, 4.5], [-54.64999999999998, 4.75], [-54.75, 5.0], [-54.64999999999998, 5.25], [-54.75, 5.5], [-54.52999999999997, 6.03], [-54.0, 6.25], [-53.75, 6.15], [-53.5, 6.25], [-52.97000000000003, 6.03], [-52.81999999999999, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.81999999999999, 5.18], [-51.47000000000003, 5.03], [-51.31999999999999, 4.68], [-50.97000000000003, 4.53], [-50.81999999999999, 4.18], [-50.75, 4.15], [-50.5, 4.25], [-50.25, 4.15], [-50.0, 4.25], [-49.75, 4.15], [-49.5, 4.25], [-49.25, 4.15], [-49.0, 4.25], [-48.75, 4.15], [-48.5, 4.25], [-48.25, 4.15], [-48.0, 4.25], [-47.47000000000003, 4.03], [-47.25, 3.5], [-47.35000000000002, 3.25], [-47.31999999999999, 3.18], [-47.25, 3.15], [-47.0, 3.25], [-46.47000000000003, 3.03], [-46.25, 2.5], [-46.35000000000002, 2.25], [-46.25, 2.0], [-46.47000000000003, 1.47], [-47.0, 1.25], [-47.52999999999997, 1.47], [-47.68000000000001, 1.82], [-48.02999999999997, 1.97], [-48.18000000000001, 2.32], [-48.25, 2.35], [-48.5, 2.25], [-48.75, 2.35], [-49.0, 2.25], [-49.25, 2.35], [-49.31999999999999, 2.32], [-49.47000000000003, 1.97], [-50.0, 1.75], [-50.5, 1.96], [-51.0, 1.75], [-51.25, 1.85], [-51.31999999999999, 1.82], [-51.47000000000003, 1.47], [-51.81999999999999, 1.32], [-51.97000000000003, 0.97], [-52.5, 0.75], [-52.75, 0.85], [-53.0, 0.75], [-53.25, 0.85], [-53.5, 0.75], [-53.75, 0.85], [-54.0, 0.75], [-54.25, 0.85], [-54.5, 0.75], [-55.02999999999997, 0.97], [-55.18000000000001, 1.32], [-55.52999999999997, 1.47], [-55.68000000000001, 1.82], [-55.75, 1.85], [-56.0, 1.75], [-56.52999999999997, 1.97], [-56.75, 2.5], [-56.64999999999998, 2.75], [-56.75, 3.0]]]]}, "2025-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.75, 3.0], [-56.52999999999997, 3.53], [-56.0, 3.75], [-55.75, 3.65], [-55.68000000000001, 3.68], [-55.52999999999997, 4.03], [-55.0, 4.25], [-54.75, 4.15], [-54.68000000000001, 4.18], [-54.64999999999998, 4.25], [-54.75, 4.5], [-54.64999999999998, 4.75], [-54.75, 5.0], [-54.64999999999998, 5.25], [-54.75, 5.5], [-54.52999999999997, 6.03], [-54.0, 6.25], [-53.75, 6.15], [-53.5, 6.25], [-52.97000000000003, 6.03], [-52.81999999999999, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.81999999999999, 5.18], [-51.47000000000003, 5.03], [-51.31999999999999, 4.68], [-50.97000000000003, 4.53], [-50.81999999999999, 4.18], [-50.75, 4.15], [-50.5, 4.25], [-50.25, 4.15], [-50.0, 4.25], [-49.75, 4.15], [-49.5, 4.25], [-49.25, 4.15], [-49.0, 4.25], [-48.75, 4.15], [-48.5, 4.25], [-48.25, 4.15], [-48.0, 4.25], [-47.47000000000003, 4.03], [-47.25, 3.5], [-47.47000000000003, 2.97], [-47.81999999999999, 2.82], [-47.97000000000003, 2.47], [-48.5, 2.25], [-48.75, 2.35], [-49.0, 2.25], [-49.25, 2.35], [-49.31999999999999, 2.32], [-49.47000000000003, 1.97], [-50.0, 1.75], [-50.5, 1.96], [-51.0, 1.75], [-51.25, 1.85], [-51.31999999999999, 1.82], [-51.47000000000003, 1.47], [-51.81999999999999, 1.32], [-51.97000000000003, 0.97], [-52.5, 0.75], [-52.75, 0.85], [-53.0, 0.75], [-53.25, 0.85], [-53.5, 0.75], [-53.75, 0.85], [-54.0, 0.75], [-54.25, 0.85], [-54.5, 0.75], [-55.02999999999997, 0.97], [-55.18000000000001, 1.32], [-55.52999999999997, 1.47], [-55.68000000000001, 1.82], [-55.75, 1.85], [-56.0, 1.75], [-56.52999999999997, 1.97], [-56.75, 2.5], [-56.64999999999998, 2.75], [-56.75, 3.0]]]]}, "2025-04-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.52999999999997, 2.47], [-56.75, 3.0], [-56.52999999999997, 3.53], [-56.0, 3.75], [-55.75, 3.65], [-55.68000000000001, 3.68], [-55.52999999999997, 4.03], [-55.0, 4.25], [-54.75, 4.15], [-54.68000000000001, 4.18], [-54.64999999999998, 4.25], [-54.75, 4.5], [-54.64999999999998, 4.75], [-54.75, 5.0], [-54.64999999999998, 5.25], [-54.75, 5.5], [-54.52999999999997, 6.03], [-54.0, 6.25], [-53.75, 6.15], [-53.5, 6.25], [-52.97000000000003, 6.03], [-52.81999999999999, 5.68], [-52.75, 5.65], [-52.5, 5.75], [-51.97000000000003, 5.53], [-51.75, 5.0], [-51.97000000000003, 4.47], [-52.31999999999999, 4.32], [-52.47000000000003, 3.97], [-52.81999999999999, 3.82], [-52.85000000000002, 3.75], [-52.75, 3.5], [-52.97000000000003, 2.97], [-53.5, 2.75], [-53.75, 2.85], [-54.0, 2.75], [-54.25, 2.85], [-54.5, 2.75], [-53.97000000000003, 2.53], [-53.75, 2.0], [-53.97000000000003, 1.47], [-54.5, 1.25], [-55.02999999999997, 1.47], [-55.19999999999999, 1.88], [-55.5, 1.75], [-56.02999999999997, 1.97], [-56.18000000000001, 2.32], [-56.52999999999997, 2.47]], [[-54.75, 2.85], [-54.81999999999999, 2.82], [-54.85000000000002, 2.75], [-54.80000000000001, 2.62], [-54.5, 2.75], [-54.75, 2.85]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 1.9679310573254725}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.195649620754392}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.763079579671228, 26.74777501424154, 27.19645085652661, 26.696452660899354, 26.77239492079798, 26.931292470296228, 26.567521466706978]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.763079579671228, 26.89712804158529, 27.451060231526696, 27.58115158081057, 27.25442784627279, 27.49955774943038, 27.226272837321005]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.0933997450398465, 1.0243604631606757, 1.0041315377683053, 1.0964836276569605, 1.1864262865936723, 1.4087542655195628, 1.122648232209282]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.0933997450398465, 1.2311633847378403, 1.288415149039679, 1.3574617579773758, 1.6792885310766792, 1.9679310573254725, 1.3463862151709804]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4752420794705519, 1.35643733067856, 1.739673679521756, 1.637531690627856, 1.7037393166914234, 2.027291395894994, 1.6439464587041541]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4752420794705519, 1.599251344295655, 2.098406812702775, 2.478445946149425, 2.2418460186492406, 2.5549408320675444, 2.1236793955556856]}}