{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:48.530106", "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": "2022-Feb-18_to_2022-Feb-20_193.0_-66.5"}, "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": 2022020002113}, "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": "February 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 20 2022"}, "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": 113513.2479904286}, "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": ["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": -66.5}, "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": 193.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "193.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 185.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 194.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -67.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -63.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-175.53, -63.97], [-175.0, -63.75], [-174.75, -63.85], [-174.5, -63.75], [-174.25, -63.85], [-174.0, -63.75], [-173.75, -63.85], [-173.5, -63.75], [-173.25, -63.85], [-173.0, -63.75], [-172.75, -63.85], [-172.68, -63.82], [-172.53, -63.47], [-172.18, -63.32], [-172.03, -62.97], [-171.5, -62.75], [-171.25, -62.85], [-171.0, -62.75], [-170.75, -62.85], [-170.5, -62.75], [-170.25, -62.85], [-170.18, -62.82], [-170.03, -62.47], [-169.5, -62.25], [-168.97, -62.47], [-168.82, -62.82], [-168.75, -62.85], [-168.5, -62.75], [-168.25, -62.85], [-168.0, -62.75], [-167.75, -62.85], [-167.5, -62.75], [-166.97, -62.97], [-166.75, -63.5], [-166.85, -63.75], [-166.75, -64.0], [-166.85, -64.25], [-166.75, -64.5], [-166.85, -64.75], [-166.82, -64.82], [-166.47, -64.97], [-166.25, -65.5], [-166.35, -65.75], [-166.32, -65.82], [-165.97, -65.97], [-165.82, -66.32], [-165.47, -66.47], [-165.25, -67.0], [-165.47, -67.53], [-166.0, -67.75], [-166.25, -67.65], [-166.5, -67.75], [-166.75, -67.65], [-167.0, -67.75], [-167.25, -67.65], [-167.5, -67.75], [-168.03, -67.53], [-168.18, -67.18], [-168.25, -67.15], [-168.5, -67.25], [-168.75, -67.15], [-169.0, -67.25], [-169.25, -67.15], [-169.5, -67.25], [-170.03, -67.03], [-170.18, -66.68], [-170.25, -66.65], [-170.5, -66.75], [-170.75, -66.65], [-171.0, -66.75], [-171.25, -66.65], [-171.5, -66.75], [-172.03, -66.53], [-172.18, -66.18], [-172.25, -66.15], [-172.5, -66.25], [-172.75, -66.15], [-173.0, -66.25], [-173.25, -66.15], [-173.5, -66.25], [-173.75, -66.15], [-174.0, -66.25], [-174.53, -66.03], [-174.68, -65.68], [-175.03, -65.53], [-175.18, -65.18], [-175.53, -65.03], [-175.75, -64.5], [-175.53, -63.97]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Southern-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-175.53, -65.03], [-175.75, -64.5], [-175.53, -63.97], [-175.0, -63.75], [-174.75, -63.85], [-174.5, -63.75], [-174.25, 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[-175.18, -65.18], [-175.53, -65.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 2.453589298459633}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8878680357800626}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [2.2088097797438877, 2.8574496427338545, 2.34711954095485]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [3.334619410876087, 3.7355233486624115, 3.3384194482011367]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.6173658674631544, 2.273650849537427, 1.772587390339606]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.0740943993091605, 2.453589298459633, 2.127083556356638]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5481519543100448, 2.1834084019998943, 1.6660130008031444]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.9298987412559787, 2.709131656773254, 2.053925752866035]}}