{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:34:55.917863", "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-Apr-04_to_2023-Apr-09_350.0_36.0"}, "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": 2023040001340}, "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 04 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 09 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 117725.11358083005}, "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": ["Portugal"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "N.Atlantic-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["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": 36.0}, "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": 350.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "350.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 346.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 351.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 32.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 39.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-8.5, 39.75], [-7.97, 39.53], [-7.75, 39.0], [-7.85, 38.75], [-7.75, 38.5], [-7.97, 37.97], [-8.5, 37.75], [-8.75, 37.85], [-9.0, 37.75], [-9.53, 37.97], [-9.75, 38.5], [-9.53, 39.03], [-9.18, 39.18], [-9.03, 39.53], [-8.5, 39.75]]]]}, "2023-04-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.18, 34.18], [-13.15, 34.25], [-13.25, 34.5], [-13.03, 35.03], [-12.68, 35.18], [-12.53, 35.53], [-12.18, 35.68], [-12.03, 36.03], [-11.68, 36.18], [-11.65, 36.25], [-11.68, 36.32], [-11.75, 36.35], [-12.0, 36.25], [-12.53, 36.47], [-12.75, 37.0], [-12.53, 37.53], [-12.0, 37.75], [-11.75, 37.65], [-11.68, 37.68], [-11.53, 38.03], [-11.0, 38.25], [-10.75, 38.15], [-10.68, 38.18], [-10.53, 38.53], [-10.0, 38.75], [-9.75, 38.65], [-9.68, 38.68], [-9.53, 39.03], [-9.18, 39.18], [-9.03, 39.53], [-8.5, 39.75], [-7.97, 39.53], [-7.75, 39.0], [-7.85, 38.75], [-7.75, 38.5], [-7.85, 38.25], [-7.75, 38.0], [-7.97, 37.47], [-8.5, 37.25], [-8.8, 37.38], [-8.85, 37.25], [-8.82, 37.18], [-8.47, 37.03], [-8.25, 36.5], [-8.47, 35.97], [-8.82, 35.82], [-8.97, 35.47], [-9.32, 35.32], [-9.47, 34.97], [-9.82, 34.82], [-9.85, 34.75], [-9.75, 34.5], [-9.97, 33.97], [-10.5, 33.75], [-10.75, 33.85], [-10.82, 33.82], [-10.97, 33.47], [-11.32, 33.32], [-11.47, 32.97], [-11.82, 32.82], [-11.97, 32.47], [-12.5, 32.25], [-12.75, 32.35], [-13.0, 32.25], [-13.25, 32.35], [-13.5, 32.25], [-14.03, 32.47], [-14.25, 33.0], [-14.03, 33.53], [-13.68, 33.68], [-13.53, 34.03], [-13.18, 34.18]]]]}, "2023-04-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.18, 34.18], [-13.15, 34.25], [-13.25, 34.5], [-13.03, 35.03], [-12.68, 35.18], [-12.53, 35.53], [-12.18, 35.68], [-12.03, 36.03], [-11.68, 36.18], [-11.65, 36.25], [-11.68, 36.32], [-11.75, 36.35], [-12.0, 36.25], [-12.53, 36.47], [-12.75, 37.0], [-12.53, 37.53], [-12.0, 37.75], [-11.75, 37.65], [-11.68, 37.68], [-11.53, 38.03], [-11.0, 38.25], [-10.75, 38.15], [-10.68, 38.18], [-10.53, 38.53], [-10.0, 38.75], [-9.75, 38.65], [-9.68, 38.68], [-9.53, 39.03], [-9.18, 39.18], [-9.03, 39.53], [-8.5, 39.75], [-7.97, 39.53], [-7.75, 39.0], [-7.85, 38.75], [-7.75, 38.5], [-7.85, 38.25], [-7.75, 38.0], [-7.97, 37.47], [-8.5, 37.25], [-8.8, 37.38], [-8.85, 37.25], [-8.82, 37.18], [-8.47, 37.03], [-8.25, 36.5], [-8.47, 35.97], [-8.82, 35.82], [-8.97, 35.47], [-9.32, 35.32], [-9.47, 34.97], [-9.82, 34.82], [-9.85, 34.75], [-9.75, 34.5], [-9.97, 33.97], [-10.5, 33.75], [-10.75, 33.85], [-10.82, 33.82], [-10.97, 33.47], [-11.32, 33.32], [-11.47, 32.97], [-11.82, 32.82], [-11.97, 32.47], [-12.5, 32.25], [-12.75, 32.35], [-13.0, 32.25], [-13.25, 32.35], [-13.5, 32.25], [-14.03, 32.47], [-14.25, 33.0], [-14.03, 33.53], [-13.68, 33.68], [-13.53, 34.03], [-13.18, 34.18]]]]}, "2023-04-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-13.18, 34.18], [-13.15, 34.25], [-13.25, 34.5], [-13.03, 35.03], [-12.68, 35.18], [-12.53, 35.53], [-12.18, 35.68], [-12.03, 36.03], [-11.68, 36.18], [-11.65, 36.25], [-11.68, 36.32], [-11.75, 36.35], [-12.0, 36.25], [-12.53, 36.47], [-12.75, 37.0], [-12.53, 37.53], [-12.0, 37.75], [-11.75, 37.65], [-11.68, 37.68], [-11.53, 38.03], [-11.0, 38.25], [-10.75, 38.15], [-10.68, 38.18], [-10.53, 38.53], [-10.0, 38.75], [-9.75, 38.65], [-9.5, 38.75], [-9.0, 38.54], [-8.5, 38.75], [-7.97, 38.53], [-7.75, 38.0], [-7.97, 37.47], [-8.5, 37.25], [-8.8, 37.38], [-8.85, 37.25], [-8.82, 37.18], [-8.47, 37.03], [-8.25, 36.5], [-8.47, 35.97], [-8.82, 35.82], [-8.97, 35.47], [-9.32, 35.32], [-9.47, 34.97], [-9.82, 34.82], [-9.85, 34.75], [-9.75, 34.5], [-9.97, 33.97], [-10.5, 33.75], [-10.75, 33.85], [-10.82, 33.82], [-10.97, 33.47], [-11.32, 33.32], [-11.47, 32.97], [-11.82, 32.82], [-11.97, 32.47], [-12.5, 32.25], [-12.75, 32.35], [-13.0, 32.25], [-13.25, 32.35], [-13.5, 32.25], [-14.03, 32.47], [-14.25, 33.0], [-14.03, 33.53], [-13.68, 33.68], [-13.53, 34.03], [-13.18, 34.18]]]]}, "2023-04-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-12.53, 36.47], [-12.75, 37.0], [-12.53, 37.53], [-12.0, 37.75], [-11.75, 37.65], [-11.68, 37.68], [-11.53, 38.03], [-11.0, 38.25], [-10.75, 38.15], [-10.68, 38.18], [-10.53, 38.53], [-10.0, 38.75], [-9.75, 38.65], [-9.5, 38.75], [-8.97, 38.53], [-8.75, 38.0], [-8.85, 37.75], [-8.75, 37.5], [-8.87, 37.2], [-8.47, 37.03], [-8.25, 36.5], [-8.47, 35.97], [-8.82, 35.82], [-8.97, 35.47], [-9.32, 35.32], [-9.47, 34.97], [-9.82, 34.82], [-9.97, 34.47], [-10.5, 34.25], [-11.03, 34.47], [-11.25, 35.0], [-11.15, 35.25], [-11.18, 35.32], [-11.53, 35.47], [-11.75, 36.0], [-11.65, 36.25], [-11.68, 36.32], [-11.75, 36.35], [-12.0, 36.25], [-12.53, 36.47]]]]}, "2023-04-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-11.53, 37.03], [-11.0, 37.25], [-10.75, 37.15], [-10.5, 37.25], [-9.97, 37.03], [-9.82, 36.68], [-9.75, 36.65], [-9.5, 36.75], [-8.97, 36.53], [-8.75, 36.0], [-8.97, 35.47], [-9.32, 35.32], [-9.47, 34.97], [-9.82, 34.82], [-9.97, 34.47], [-10.5, 34.25], [-11.03, 34.47], [-11.25, 35.0], [-11.15, 35.25], [-11.18, 35.32], [-11.53, 35.47], [-11.75, 36.0], [-11.65, 36.25], [-11.75, 36.5], [-11.53, 37.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.25013951224264}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.9550861421931198}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.51551932617997, 17.881389063647987, 17.625030721198982, 17.35497307681959, 17.231049547288364, 17.392205052509382]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.217846772102234, 19.96227699719742, 19.407272410797646, 18.30153987756404, 17.504831420536163, 17.850206933050515]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.845123668237477, 2.2382154303540642, 1.9664599984685374, 1.6276557963137785, 1.8534553364831614, 1.6476065181240074]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.538124884495346, 5.25013951224264, 4.60212389158994, 3.5341491918424595, 2.1520136646003607, 1.7669911577757489]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5278098290316642, 1.953486470568522, 1.7285437383298838, 1.5257313464544509, 1.659143868225756, 1.5408263643666333]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5419544410921182, 2.1510897852076396, 2.281397278770135, 1.7376138174036284, 1.8903410068740554, 1.7309209127794902]}}