{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:58:02.317458", "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-Dec-05_to_2025-Dec-17_45.5_-20.5"}, "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": 2025120001334}, "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": "December 05 2025"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 17 2025"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 13}, "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": 52130.143558188276}, "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": ["Madagascar"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Madagascar"]}, "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": ["Mozambique Channel"]}, "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": -20.5}, "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": 45.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "45.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 43.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 46.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -22.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2025-12-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, -20.25], [44.75, -20.0], [44.97, -19.47], [45.5, -19.25], [45.75, -19.35], [46.0, -19.25], [46.53, -19.47], [46.75, -20.0], [46.65, -20.25], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.0, -21.75], [45.75, -21.65], [45.5, -21.75], [44.97, -21.53], [44.75, -21.0], [44.85, -20.75], [44.75, -20.5], [44.85, -20.25]]]]}, "2025-12-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, -20.25], [44.75, -20.0], [44.97, -19.47], [45.5, -19.25], [45.75, -19.35], [46.0, -19.25], [46.53, -19.47], [46.75, -20.0], [46.65, -20.25], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.0, -21.75], [45.75, -21.65], [45.5, -21.75], [44.97, -21.53], [44.75, -21.0], [44.85, -20.75], [44.75, -20.5], [44.85, -20.25]]]]}, "2025-12-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, -20.25], [44.75, -20.0], [44.97, -19.47], [45.5, -19.25], [45.75, -19.35], [46.0, -19.25], [46.53, -19.47], [46.75, -20.0], [46.65, -20.25], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.0, -21.75], [45.75, -21.65], [45.5, -21.75], [44.97, -21.53], [44.75, -21.0], [44.85, -20.75], [44.75, -20.5], [44.85, -20.25]]]]}, "2025-12-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, -20.25], [44.75, -20.0], [44.97, -19.47], [45.5, -19.25], [45.75, -19.35], [46.0, -19.25], [46.53, -19.47], [46.75, -20.0], [46.65, -20.25], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.0, -21.75], [45.75, -21.65], [45.5, -21.75], [44.97, -21.53], [44.75, -21.0], [44.85, -20.75], [44.75, -20.5], [44.85, -20.25]]]]}, "2025-12-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.85, -20.75], [44.75, -20.5], [44.85, -20.25], [44.75, -20.0], [44.85, -19.75], [44.75, -19.5], [44.97, -18.97], [45.5, -18.75], [46.03, -18.97], [46.18, -19.32], [46.53, -19.47], [46.75, -20.0], [46.54, -20.5], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.5, -22.25], [44.97, -22.03], [44.75, -21.5], [44.85, -21.25], [44.75, -21.0], [44.85, -20.75]]]]}, "2025-12-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.25, -20.0], [44.47, -19.47], [44.82, -19.32], [44.97, -18.97], [45.5, -18.75], [46.03, -18.97], [46.18, -19.32], [46.53, -19.47], [46.75, -20.0], [46.65, -20.25], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.5, -22.25], [44.97, -22.03], [44.75, -21.5], [44.85, -21.25], [44.75, -21.0], [44.85, -20.75], [44.82, -20.68], [44.47, -20.53], [44.25, -20.0]]]]}, "2025-12-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.82, -20.68], [44.47, -20.53], [44.25, -20.0], [44.47, -19.47], [44.82, -19.32], [44.97, -18.97], [45.5, -18.75], [46.03, -18.97], [46.18, -19.32], [46.53, -19.47], [46.75, -20.0], [46.65, -20.25], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.5, -22.25], [45.25, -22.15], [45.0, -22.25], [44.47, -22.03], [44.25, -21.5], [44.47, -20.97], [44.82, -20.82], [44.85, -20.75], [44.82, -20.68]]]]}, "2025-12-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.82, -20.68], [44.47, -20.53], [44.25, -20.0], [44.47, -19.47], [44.82, -19.32], [44.97, -18.97], [45.5, -18.75], [46.03, -18.97], [46.18, -19.32], [46.53, -19.47], [46.75, -20.0], [46.65, -20.25], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.5, -22.25], [45.25, -22.15], [45.0, -22.25], [44.47, -22.03], [44.25, -21.5], [44.47, -20.97], [44.82, -20.82], [44.85, -20.75], [44.82, -20.68]]]]}, "2025-12-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[44.75, -20.5], [44.97, -19.97], [45.5, -19.75], [45.75, -19.85], [46.0, -19.75], [46.53, -19.97], [46.75, -20.5], [46.65, -20.75], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.5, -22.25], [45.25, -22.15], [45.0, -22.25], [44.47, -22.03], [44.25, -21.5], [44.47, -20.97], [44.82, -20.82], [44.85, -20.75], [44.75, -20.5]]]]}, "2025-12-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.97, -20.53], [43.75, -20.0], [43.97, -19.47], [44.5, -19.25], [44.75, -19.35], [45.0, -19.25], [45.25, -19.35], [45.5, -19.25], [46.03, -19.47], [46.25, -20.0], [46.15, -20.25], [46.25, -20.5], [46.15, -20.75], [46.25, -21.0], [46.03, -21.53], [45.5, -21.75], [44.97, -21.53], [44.75, -21.0], [44.85, -20.75], [44.82, -20.68], [44.75, -20.65], [44.5, -20.75], [43.97, -20.53]]]]}, "2025-12-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.35, -19.75], [43.25, -19.5], [43.35, -19.25], [43.25, -19.0], [43.47, -18.47], [44.0, -18.25], [44.53, -18.47], [44.75, -19.0], [44.65, -19.25], [44.68, -19.32], [44.75, -19.35], [45.0, -19.25], [45.25, -19.35], [45.5, -19.25], [46.03, -19.47], [46.25, -20.0], [46.15, -20.25], [46.18, -20.32], [46.53, -20.47], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.68, -22.18], [45.53, -22.53], [45.0, -22.75], [44.47, -22.53], [44.25, -22.0], [44.35, -21.75], [44.25, -21.5], [44.35, -21.25], [44.3, -21.12], [44.0, -21.25], [43.47, -21.03], [43.25, -20.5], [43.35, -20.25], [43.25, -20.0], [43.35, -19.75]]]]}, "2025-12-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.35, -19.75], [43.25, -19.5], [43.35, -19.25], [43.25, -19.0], [43.47, -18.47], [44.0, -18.25], [44.53, -18.47], [44.75, -19.0], [44.65, -19.25], [44.68, -19.32], [44.75, -19.35], [45.0, -19.25], [45.25, -19.35], [45.5, -19.25], [46.03, -19.47], [46.25, -20.0], [46.15, -20.25], [46.18, -20.32], [46.53, -20.47], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.68, -22.18], [45.53, -22.53], [45.0, -22.75], [44.47, -22.53], [44.25, -22.0], [44.35, -21.75], [44.25, -21.5], [44.35, -21.25], [44.3, -21.12], [44.0, -21.25], [43.47, -21.03], [43.25, -20.5], [43.35, -20.25], [43.25, -20.0], [43.35, -19.75]]]]}, "2025-12-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[43.35, -19.75], [43.25, -19.5], [43.35, -19.25], [43.25, -19.0], [43.47, -18.47], [44.0, -18.25], [44.53, -18.47], [44.75, -19.0], [44.65, -19.25], [44.75, -19.5], [44.65, -19.75], [44.7, -19.87], [45.0, -19.75], [45.25, -19.85], [45.5, -19.75], [46.03, -19.97], [46.18, -20.32], [46.53, -20.47], [46.75, -21.0], [46.53, -21.53], [46.18, -21.68], [46.03, -22.03], [45.68, -22.18], [45.53, -22.53], [45.0, -22.75], [44.47, -22.53], [44.25, -22.0], [44.35, -21.75], [44.25, -21.5], [44.35, -21.25], [44.3, -21.12], [44.0, -21.25], [43.47, -21.03], [43.25, -20.5], [43.35, -20.25], [43.25, -20.0], [43.35, -19.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.102571504684363}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.1448308190879564}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [27.93782111273873, 27.97796783447268, 27.92177691989474, 27.722934553358357, 28.483270445324194, 28.42982734397617, 28.75262858072921, 27.98010711669923, 28.170505354139607, 29.128750864664767, 29.521237267388244, 29.120518154568174, 28.684193759494406]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [29.890593465169275, 30.203106180826865, 29.778086598714196, 29.872741953531943, 30.2942939758301, 30.370437876383505, 30.49676920572921, 29.427730814615927, 29.491292572021507, 30.360651906331384, 31.24374160766604, 30.48107045491537, 29.354773457845056]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.029114443084353, 2.091200180836495, 2.0714555170373123, 1.888781969497927, 2.166755040911044, 2.295218138837836, 2.5592878116543147, 1.8096937094876466, 2.2978666789609483, 1.8005956573011759, 2.4969331983532017, 2.1114568219847873, 1.8710397901269762]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.330791720351442, 2.541626936450598, 2.432989131294164, 2.2981956227105798, 2.6329252797310687, 2.860080336696342, 3.59910269082269, 2.4532619893213337, 2.8147481358656137, 2.2820360926893954, 4.102571504684363, 3.3577845269321642, 2.532383502625521]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.699517063098176, 1.8165386227758613, 1.8551822518331933, 1.7339610071266132, 1.9714863757407188, 2.158856075828878, 2.388260413031219, 1.6884790094683766, 2.0665813142613367, 1.6806927113745402, 2.3110009880162017, 1.916300118587176, 1.7729016868317578]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9080789495390902, 2.1278224978972102, 2.1234882183410124, 2.030888970055364, 2.385374289608072, 2.567929784769613, 3.210085212015306, 2.2120432665514502, 2.5246047962195086, 2.133679525985739, 3.8057022324962966, 3.0862488746751002, 2.185470918492205]}}