{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:46.496400", "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-12_to_2023-Apr-17_146.0_-5.0"}, "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": 2023040001884}, "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 12 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 17 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": 73663.25411718723}, "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": ["Papua New Guinea"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["Bismarck Sea", "Solomon Sea"]}, "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": -5.0}, "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": 146.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "146.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 143.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 147.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[144.32, -6.82], [144.47, -6.47], [145.0, -6.25], [145.25, -6.35], [145.32, -6.32], [145.46, -6.0], [145.25, -5.5], [145.35, -5.25], [145.32, -5.18], [144.97, -5.03], [144.75, -4.5], [144.97, -3.97], [145.5, -3.75], [145.75, -3.85], [146.0, -3.75], [146.53, -3.97], [146.68, -4.32], [147.03, -4.47], [147.25, -5.0], [147.15, -5.25], [147.25, -5.5], [147.15, -5.75], [147.18, -5.82], [147.25, -5.85], [147.5, -5.75], [148.03, -5.97], [148.25, -6.5], [148.04, -7.0], [148.25, -7.5], [148.15, -7.75], [148.25, -8.0], [148.15, -8.25], [148.25, -8.5], [148.03, -9.03], [147.5, -9.25], [146.97, -9.03], [146.75, -8.5], [146.85, -8.25], [146.82, -8.18], [146.47, -8.03], [146.32, -7.68], [146.25, -7.65], [146.2, -7.63], [146.15, -7.75], [146.25, -8.0], [146.03, -8.53], [145.5, -8.75], [144.97, -8.53], [144.82, -8.18], [144.75, -8.15], [144.5, -8.25], [144.25, -8.15], [144.18, -8.18], [144.03, -8.53], [143.5, -8.75], [142.97, -8.53], [142.75, -8.0], [142.97, -7.47], [143.32, -7.32], [143.47, -6.97], [144.0, -6.75], [144.25, -6.85], [144.32, -6.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.Asia", "Equatorial.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-04-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[146.25, -6.5], [146.47, -5.97], [147.0, -5.75], [147.25, -5.85], [147.5, -5.75], [148.03, -5.97], [148.25, -6.5], [148.03, -7.03], [147.63, -7.2], [147.68, -7.32], [148.03, -7.47], [148.25, -8.0], [148.03, -8.53], [147.5, -8.75], [146.97, -8.53], [146.82, -8.18], [146.47, -8.03], [146.25, -7.5], [146.46, -7.0], [146.25, -6.5]]]]}, "2023-04-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[144.97, -5.03], [144.75, -4.5], [144.97, -3.97], [145.5, -3.75], [145.75, -3.85], [146.0, -3.75], [146.53, -3.97], [146.68, -4.32], [147.03, -4.47], [147.25, -5.0], [147.15, -5.25], [147.25, -5.5], [147.15, -5.75], [147.18, -5.82], [147.25, -5.85], [147.5, -5.75], [148.03, -5.97], [148.25, -6.5], 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"description": "Mean t2m anomaly over entire duration", "value": 1.2549772101287193}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.495596058567685, 24.563631482220615, 24.859294076222113, 25.120676929750402, 25.891206909769778, 27.012897985712414]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.445375024711836, 28.36720097680802, 28.30224029650799, 28.041660223658766, 27.981713534573657, 28.089440610530914]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [0.9545103671434418, 1.313504423975318, 1.2580504539273767, 1.1922942497577997, 1.1606758088974327, 1.5733232726642683]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.159582967674055, 1.6676058339450606, 1.7426367459904668, 1.83536620225982, 1.5945773936277874, 2.1281030968417554]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6010379549015723, 2.3462419269144137, 1.9489060213394571, 1.8141558870268655, 1.4988537890877736, 1.9871683400151539]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9724708886640727, 3.0474443837244505, 2.7161819267889653, 2.983550198216177, 1.8592760429269395, 2.596328375094073]}}