{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:25:26.671770", "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": "2021-Apr-24_to_2021-May-05_47.5_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": 2021040002583}, "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 24 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 05 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 12}, "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": 138794.98242041172}, "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": ["Somalia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Indian-Ocean", "N.Eastern-Africa", "S.Eastern-Africa"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": ["Indian 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": 47.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "47.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 42.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 50.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 1.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 5.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-04-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 5.53], [48.32, 5.68], [48.47, 6.03], [49.0, 6.25], [49.25, 6.15], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.03, 4.97], [49.5, 4.75], [49.25, 4.85], [49.18, 4.82], [49.15, 4.75], [49.25, 4.5], [49.03, 3.97], [48.5, 3.75], [47.97, 3.97], [47.75, 4.5], [47.85, 4.75], [47.75, 5.0], [47.97, 5.53]]]]}, "2021-04-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 5.53], [48.32, 5.68], [48.47, 6.03], [49.0, 6.25], [49.25, 6.15], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.03, 4.97], [49.5, 4.75], [49.25, 4.85], [49.18, 4.82], [49.15, 4.75], [49.18, 4.68], [49.53, 4.53], [49.75, 4.0], [49.53, 3.47], [49.0, 3.25], [48.47, 3.47], [48.32, 3.82], [47.97, 3.97], [47.75, 4.5], [47.85, 4.75], [47.75, 5.0], [47.97, 5.53]]]]}, "2021-04-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[47.97, 5.53], [48.32, 5.68], [48.47, 6.03], [49.0, 6.25], [49.25, 6.15], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.03, 4.97], [49.5, 4.75], [49.25, 4.85], [49.18, 4.82], [49.15, 4.75], [49.18, 4.68], [49.53, 4.53], [49.75, 4.0], [49.53, 3.47], [49.0, 3.25], [48.47, 3.47], [48.32, 3.82], [47.97, 3.97], [47.75, 4.5], [47.85, 4.75], [47.75, 5.0], [47.97, 5.53]]]]}, "2021-04-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[50.53, 1.97], [50.0, 1.75], [49.47, 1.97], [49.25, 2.5], [49.47, 3.03], [50.0, 3.25], [50.53, 3.03], [50.75, 2.5], [50.53, 1.97]]], [[[47.97, 5.53], [48.5, 5.75], [48.8, 5.62], [48.97, 6.03], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.04, 5.0], [50.18, 4.68], [50.53, 4.53], [50.75, 4.0], [50.53, 3.47], [50.0, 3.25], [49.75, 3.35], [49.5, 3.25], [49.25, 3.35], [49.0, 3.25], [48.47, 3.47], [48.25, 4.0], [48.35, 4.25], [48.32, 4.32], [47.97, 4.47], [47.75, 5.0], [47.97, 5.53]]]]}, "2021-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[46.85, 4.75], [46.75, 5.0], [46.97, 5.53], [47.5, 5.75], [47.75, 5.65], [48.0, 5.75], [48.25, 5.65], [48.5, 5.75], [48.8, 5.62], [48.97, 6.03], [49.5, 6.25], [50.03, 6.03], [50.25, 5.5], [50.04, 5.0], [50.18, 4.68], [50.53, 4.53], [50.75, 4.0], [50.53, 3.47], [50.13, 3.3], [50.18, 3.18], [50.53, 3.03], [50.75, 2.5], [50.53, 1.97], [50.0, 1.75], [49.75, 1.85], [49.68, 1.82], [49.53, 1.47], [49.0, 1.25], [48.47, 1.47], [48.25, 2.0], [48.35, 2.25], [48.32, 2.32], [47.97, 2.47], [47.75, 3.0], [47.93, 3.43], [47.5, 3.25], [46.97, 3.47], [46.75, 4.0], [46.85, 4.25], [46.75, 4.5], [46.85, 4.75]]]]}, "2021-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 2.47], [43.75, 3.0], [43.97, 3.53], [44.5, 3.75], [45.03, 3.53], [45.25, 3.0], [45.03, 2.47], [44.5, 2.25], [43.97, 2.47]]], [[[46.47, 5.53], [47.0, 5.75], [47.25, 5.65], [47.5, 5.75], [47.75, 5.65], [48.0, 5.75], [48.25, 5.65], [48.5, 5.75], [49.03, 5.53], [49.18, 5.18], [49.25, 5.15], [49.5, 5.25], [50.03, 5.03], [50.18, 4.68], [50.53, 4.53], [50.75, 4.0], [50.53, 3.47], [50.13, 3.3], [50.18, 3.18], [50.53, 3.03], [50.75, 2.5], [50.53, 1.97], [50.0, 1.75], [49.75, 1.85], [49.68, 1.82], [49.53, 1.47], [49.0, 1.25], [48.47, 1.47], [48.25, 2.0], [48.35, 2.25], [48.32, 2.32], [47.97, 2.47], [47.75, 3.0], [47.93, 3.43], [47.5, 3.25], [46.97, 3.47], [46.75, 4.0], [46.85, 4.25], [46.82, 4.32], [46.47, 4.47], [46.25, 5.0], [46.47, 5.53]]]]}, "2021-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 2.47], [43.75, 3.0], [43.97, 3.53], [44.5, 3.75], [45.03, 3.53], [45.25, 3.0], [45.03, 2.47], [44.5, 2.25], [43.97, 2.47]]], [[[46.32, 5.68], [46.47, 6.03], [47.0, 6.25], [47.53, 6.03], [47.68, 5.68], [47.75, 5.65], [48.0, 5.75], [48.25, 5.65], [48.5, 5.75], [49.03, 5.53], [49.18, 5.18], [49.25, 5.15], [49.5, 5.25], [50.03, 5.03], [50.25, 4.5], [50.15, 4.25], [50.25, 4.0], [50.04, 3.5], [50.25, 3.0], [50.15, 2.75], [50.25, 2.5], [50.03, 1.97], [49.68, 1.82], [49.53, 1.47], [49.0, 1.25], [48.47, 1.47], [48.25, 2.0], [48.35, 2.25], [48.32, 2.32], [47.97, 2.47], [47.75, 3.0], [47.93, 3.43], [47.5, 3.25], [46.97, 3.47], [46.8, 3.88], [46.5, 3.75], [45.97, 3.97], [45.75, 4.5], [45.85, 4.75], [45.75, 5.0], [45.97, 5.53], [46.32, 5.68]]]]}, "2021-05-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, 2.47], [43.75, 3.0], [43.97, 3.53], [44.5, 3.75], [45.03, 3.53], [45.25, 3.0], [45.03, 2.47], [44.5, 2.25], [43.97, 2.47]]], [[[48.47, 4.03], [49.0, 4.25], [49.53, 4.03], [49.68, 3.68], [50.03, 3.53], [50.25, 3.0], [50.15, 2.75], [50.25, 2.5], [50.03, 1.97], [49.5, 1.75], [49.25, 1.85], [49.0, 1.75], [48.47, 1.97], [48.25, 2.5], [48.35, 2.75], [48.25, 3.0], [48.35, 3.25], [48.25, 3.5], [48.47, 4.03]]], [[[46.32, 5.68], [46.47, 6.03], [47.0, 6.25], [47.53, 6.03], [47.68, 5.68], [48.03, 5.53], [48.25, 5.0], [48.15, 4.75], [48.25, 4.5], [48.03, 3.97], [47.5, 3.75], [47.2, 3.88], [47.03, 3.47], [46.5, 3.25], [46.25, 3.35], [46.0, 3.25], [45.47, 3.47], [45.25, 4.0], [45.47, 4.53], [45.82, 4.68], [45.85, 4.75], [45.75, 5.0], [45.97, 5.53], [46.32, 5.68]]]]}, "2021-05-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.25, 3.5], [48.47, 4.03], [49.0, 4.25], [49.53, 4.03], [49.68, 3.68], [50.03, 3.53], [50.25, 3.0], [50.15, 2.75], [50.25, 2.5], [50.03, 1.97], [49.5, 1.75], [49.25, 1.85], [49.0, 1.75], [48.47, 1.97], [48.25, 2.5], [48.35, 2.75], [48.25, 3.0], [48.35, 3.25], [48.25, 3.5]]], [[[41.97, 4.03], [42.5, 4.25], [42.75, 4.15], [43.0, 4.25], [43.25, 4.15], [43.5, 4.25], [44.03, 4.03], [44.2, 3.62], [44.5, 3.75], [45.03, 3.53], [45.18, 3.18], [45.25, 3.15], [45.38, 3.2], [45.25, 3.5], [45.35, 3.75], [45.25, 4.0], [45.47, 4.53], [45.82, 4.68], [45.85, 4.75], [45.75, 5.0], [45.97, 5.53], [46.32, 5.68], [46.47, 6.03], [47.0, 6.25], [47.53, 6.03], [47.68, 5.68], [48.03, 5.53], [48.25, 5.0], [48.15, 4.75], [48.25, 4.5], [48.15, 4.25], [48.25, 4.0], [48.03, 3.47], [47.5, 3.25], [47.2, 3.38], [47.03, 2.97], [46.5, 2.75], [46.25, 2.85], [46.13, 2.8], [46.25, 2.5], [46.03, 1.97], [45.5, 1.75], [45.25, 1.85], [45.0, 1.75], [44.75, 1.85], [44.68, 1.82], [44.53, 1.47], [44.0, 1.25], [43.75, 1.35], [43.5, 1.25], [42.97, 1.47], [42.82, 1.82], [42.47, 1.97], [42.25, 2.5], [42.35, 2.75], [42.32, 2.82], [41.97, 2.97], [41.75, 3.5], [41.97, 4.03]]]]}, "2021-05-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[48.47, 1.97], [48.25, 2.5], [48.47, 3.03], [49.0, 3.25], [49.53, 3.03], [49.75, 2.5], [49.53, 1.97], [49.0, 1.75], [48.47, 1.97]]], [[[41.97, 4.03], [42.5, 4.25], [42.75, 4.15], [43.0, 4.25], [43.25, 4.15], [43.5, 4.25], [44.03, 4.03], [44.2, 3.62], [44.5, 3.75], [45.03, 3.53], [45.18, 3.18], [45.25, 3.15], [45.32, 3.18], [45.35, 3.25], [45.25, 3.5], [45.35, 3.75], [45.25, 4.0], [45.47, 4.53], [46.0, 4.75], [46.25, 4.65], [46.5, 4.75], [46.8, 4.62], [46.97, 5.03], [47.5, 5.25], [48.03, 5.03], [48.25, 4.5], [48.15, 4.25], [48.25, 4.0], [48.03, 3.47], [47.5, 3.25], [47.2, 3.38], [47.03, 2.97], [46.68, 2.82], [46.53, 2.47], [46.18, 2.32], [46.03, 1.97], [45.5, 1.75], [45.25, 1.85], [45.0, 1.75], [44.75, 1.85], [44.68, 1.82], [44.53, 1.47], [44.0, 1.25], [43.75, 1.35], [43.5, 1.25], [42.97, 1.47], [42.82, 1.82], [42.47, 1.97], [42.25, 2.5], [42.35, 2.75], [42.32, 2.82], [41.97, 2.97], [41.75, 3.5], [41.97, 4.03]]]]}, "2021-05-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[41.75, 3.5], [41.97, 4.03], [42.5, 4.25], [42.75, 4.15], [43.0, 4.25], [43.25, 4.15], [43.5, 4.25], [44.03, 4.03], [44.25, 3.5], [44.13, 3.2], [44.25, 3.15], [44.5, 3.25], [44.75, 3.15], [45.0, 3.25], [45.25, 3.15], [45.32, 3.18], [45.35, 3.25], [45.25, 3.5], [45.47, 4.03], [46.0, 4.25], [46.25, 4.15], [46.5, 4.25], [46.8, 4.12], [46.97, 4.53], [47.5, 4.75], [48.03, 4.53], [48.25, 4.0], [48.03, 3.47], [47.5, 3.25], [47.2, 3.38], [47.03, 2.97], [46.68, 2.82], [46.53, 2.47], [46.18, 2.32], [46.03, 1.97], [45.5, 1.75], [45.25, 1.85], [45.0, 1.75], [44.75, 1.85], [44.68, 1.82], [44.53, 1.47], [44.0, 1.25], [43.75, 1.35], [43.5, 1.25], [42.97, 1.47], [42.82, 1.82], [42.47, 1.97], [42.25, 2.5], [42.35, 2.75], [42.32, 2.82], [41.97, 2.97], [41.75, 3.5]]]]}, "2021-05-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[42.47, 4.03], [43.0, 4.25], [43.25, 4.15], [43.5, 4.25], [44.03, 4.03], [44.25, 3.5], [44.13, 3.2], [44.25, 3.15], [44.5, 3.25], [44.75, 3.15], [45.0, 3.25], [45.25, 3.15], [45.32, 3.18], [45.35, 3.25], [45.25, 3.5], [45.47, 4.03], [46.0, 4.25], [46.25, 4.15], [46.5, 4.25], [47.03, 4.03], [47.25, 3.5], [47.03, 2.97], [46.68, 2.82], [46.53, 2.47], [46.18, 2.32], [46.03, 1.97], [45.5, 1.75], [45.25, 1.85], [45.0, 1.75], [44.75, 1.85], [44.68, 1.82], [44.53, 1.47], [44.0, 1.25], [43.75, 1.35], [43.5, 1.25], [42.97, 1.47], [42.82, 1.82], [42.47, 1.97], [42.25, 2.5], [42.46, 3.0], [42.25, 3.5], [42.47, 4.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.6470010519629454}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.4136784053400544}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [29.077261226517578, 29.15268201993854, 29.093418407559966, 29.137261188893376, 29.13861845535223, 29.28460219322517, 29.26783607882885, 29.58374004226556, 29.576623733805945, 29.38802439721252, 29.12126517859093, 29.05107240778159]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.10223141540132, 29.231488863740594, 29.198556044965187, 29.26534936755195, 29.649488279512525, 30.368366875270453, 30.571993740656637, 30.81447480669891, 31.10070872264697, 30.745464106470365, 30.942866807124233, 30.117707469391178]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9161061587930419, 0.9773849926809361, 0.9157273166458026, 0.9068575102276881, 1.070017598543178, 1.223498864264459, 1.202281961832033, 1.5319603948843021, 1.7770862858230767, 1.8317926145596093, 1.6304018320050524, 1.6661023195276374]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [0.9401154357605037, 1.047870657453359, 1.0096046079884786, 1.0085059325962789, 1.6603945676255307, 2.2591633768408883, 2.226227088982739, 2.5110458954394517, 2.39990178245273, 2.6470010519629454, 2.216247834233741, 2.1823905732940148]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4430812166522624, 1.5448105361676845, 1.4451702090275214, 1.3973737457945794, 1.564631190357406, 1.6927892295475524, 1.5047498416923146, 1.566876139372106, 1.8035171940402408, 1.893231810082872, 1.70313275215859, 1.8176504088905867]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5276276964181252, 1.7054475552940667, 1.5530453366949408, 1.5380561975984353, 1.7936088532688632, 2.0906638203912116, 1.7178753322324396, 1.9102019928409733, 2.3206962341239676, 2.619455410422361, 2.1377095827696198, 2.3214180885454927]}}