{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:23:54.411734", "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-14_to_2021-Apr-16_147.0_-2.5"}, "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": 2021040002188}, "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 14 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 16 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 74136.09026994789}, "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", "Pacific 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": -2.5}, "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": 147.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "147.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 145.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 148.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -3.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -0.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[144.97, -0.97], [145.5, -0.75], [145.75, -0.854], [145.823, -0.823], [145.97, -0.47], [146.5, -0.25], [146.75, -0.354], [146.823, -0.323], [146.97, 0.03], [147.5, 0.25], [148.03, 0.03], [148.25, -0.5], [148.146, -0.75], [148.177, -0.823], [148.53, -0.97], [148.75, -1.5], [148.646, -1.75], [148.75, -2.0], [148.646, -2.25], [148.75, -2.5], [148.646, -2.75], [148.75, -3.0], [148.53, -3.53], [148.0, -3.75], [147.75, -3.646], [147.5, -3.75], [147.25, -3.646], [147.0, -3.75], [146.75, -3.646], [146.5, -3.75], [145.97, -3.53], [145.823, -3.177], [145.47, -3.03], [145.323, -2.677], [144.97, -2.53], [144.75, -2.0], [144.854, -1.75], [144.75, -1.5], [144.97, -0.97]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-04-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[144.85355339059328, -1.75], [144.75, -1.5], [144.96966991411009, -0.9696699141100894], [145.5, -0.75], [145.75, 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[144.75, -2.0], [144.85355339059328, -1.75]]]}, "2021-04-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[144.85355339059328, -1.75], [144.75, -1.5], [144.96966991411009, -0.9696699141100894], [145.5, -0.75], [145.75, -0.853553390593273], [145.82322330470336, -0.8232233047033631], [145.96966991411009, -0.4696699141100894], [146.5, -0.25], [146.75, -0.3535533905932729], [146.82322330470336, -0.32322330470336313], [146.96966991411009, 0.030330085889910596], [147.5, 0.25], [148.03033008588991, 0.030330085889910707], [148.25, -0.5], [148.14644660940672, -0.75], [148.17677669529664, -0.8232233047033631], [148.53033008588991, -0.9696699141100893], [148.75, -1.5], [148.64644660940672, -1.75], [148.75, -2.0], [148.64644660940672, -2.25], [148.75, -2.5], [148.64644660940672, -2.75], [148.75, -3.0], [148.53033008588991, -3.5303300858899105], [148.0, -3.75], [147.75, -3.646446609406727], [147.5, -3.75], [147.25, -3.646446609406727], [147.0, -3.75], [146.75, -3.646446609406727], 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maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [28.79663650314933, 28.738810802576495, 28.644882692688782]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.2868129818160223, 1.1141386116153005, 1.0560057433483483]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.6756987766289626, 1.4325642245937615, 1.3938634756383408]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [2.254133908718518, 2.0171099617126136, 1.9648975410471632]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.9917250127170427, 2.760877746810422, 2.4904834136055953]}}