{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:36.148780", "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": "2020-Sep-27_to_2020-Sep-29_199.5_-61.0"}, "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": 2020090002580}, "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": "September 27 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 29 2020"}, "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": 74596.20751124986}, "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": ["Antarctica"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Antarctica"]}, "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": ["Pacific Ocean", "Pacific-Antarctic Ridge", "Southern 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": -61.0}, "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": 199.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "199.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 198.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 203.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -63.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -60.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-162.25, -61.0], [-162.03, -60.47], [-161.677, -60.323], [-161.53, -59.97], [-161.0, -59.75], [-160.75, -59.854], [-160.5, 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["Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-09-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-161.67677669529664, -61.67677669529664], [-162.03033008588991, -61.53033008588991], [-162.25, -61.0], [-162.03033008588991, -60.46966991411009], [-161.67677669529664, -60.32322330470336], [-161.53033008588991, -59.96966991411009], [-161.0, -59.75], [-160.75, -59.85355339059328], [-160.5, -59.75], [-160.25, -59.85355339059328], [-160.0, -59.75], [-159.75, -59.85355339059328], [-159.5, -59.75], [-159.25, -59.85355339059328], [-159.0, -59.75], [-158.75, -59.85355339059328], [-158.5, -59.75], [-158.25, -59.85355339059328], [-158.0, -59.75], [-157.46966991411009, -59.96966991411009], [-157.32322330470336, -60.32322330470336], [-157.25, -60.35355339059328], [-157.0, -60.25], [-156.46966991411009, -60.46966991411009], [-156.32322330470336, -60.82322330470336], 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maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.121330882947859, 2.428592815207878, 1.5370137831598072]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.4265376482546435, 4.8466808828997925, 4.060598383519373]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [6.081846002254792, 7.103559150110186, 6.127383415109421]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1789956917985334, 1.2860018742761343, 1.1275251686260244]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.3150609561893947, 1.3841396947435987, 1.2158011582801778]}}