{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:13:11.498583", "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-Aug-21_to_2021-Aug-23_34.0_-75.5"}, "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": 2021080002703}, "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": "August 21 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 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": 51142.8387355998}, "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": []}, "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": -75.5}, "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": 34.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "34.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 28.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -77.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -74.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[27.75, -75.5], [27.97, -74.97], [28.5, -74.75], [28.75, -74.85], [28.82, -74.82], [28.85, -74.75], [28.75, -74.5], [28.97, -73.97], [29.5, -73.75], [29.75, -73.85], [29.82, -73.82], [29.97, -73.47], [30.5, -73.25], [30.75, -73.35], [31.0, -73.25], [31.53, -73.47], [31.68, -73.82], [31.75, -73.85], [32.0, -73.75], [32.25, -73.85], [32.5, -73.75], [32.75, -73.85], [33.0, -73.75], [33.25, -73.85], [33.5, -73.75], [34.03, -73.97], [34.18, -74.32], [34.25, -74.35], [34.5, -74.25], [35.03, -74.47], [35.18, -74.82], [35.53, -74.97], [35.75, -75.5], [35.65, -75.75], [35.75, -76.0], [35.65, -76.25], [35.68, -76.32], [36.03, -76.47], [36.25, -77.0], [36.03, -77.53], [35.68, -77.68], [35.53, -78.03], [35.0, -78.25], [34.75, -78.15], [34.5, -78.25], [33.97, -78.03], [33.82, -77.68], [33.75, -77.65], [33.5, -77.75], [33.25, -77.65], [33.0, -77.75], [32.75, -77.65], [32.5, -77.75], [32.25, -77.65], [32.0, -77.75], [31.47, -77.53], [31.32, -77.18], [31.25, -77.15], [31.0, -77.25], [30.47, -77.03], [30.32, -76.68], [30.25, -76.65], [30.0, -76.75], [29.75, -76.65], [29.5, -76.75], [28.97, -76.53], [28.82, -76.18], [28.75, -76.15], [28.5, -76.25], [27.97, -76.03], [27.75, -75.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Antarctica"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-08-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.5, -76.25], [27.97, -76.03], [27.75, -75.5], [27.97, -74.97], [28.5, -74.75], [28.75, -74.85], [28.82, -74.82], [28.85, -74.75], [28.75, -74.5], [28.97, -73.97], [29.5, -73.75], [29.75, -73.85], [29.82, -73.82], [29.97, -73.47], [30.5, -73.25], [30.75, -73.35], [31.0, -73.25], [31.53, -73.47], [31.68, -73.82], [31.75, -73.85], [32.0, -73.75], [32.25, -73.85], [32.5, -73.75], [32.75, -73.85], [33.0, -73.75], [33.25, -73.85], [33.5, -73.75], [34.03, -73.97], [34.18, -74.32], [34.25, -74.35], [34.5, -74.25], [35.03, -74.47], [35.18, -74.82], [35.53, -74.97], [35.75, -75.5], [35.65, -75.75], [35.75, -76.0], [35.65, -76.25], [35.68, -76.32], [36.03, -76.47], [36.25, -77.0], [36.03, -77.53], [35.68, -77.68], [35.53, -78.03], [35.0, -78.25], [34.75, -78.15], [34.5, -78.25], [33.97, -78.03], [33.82, -77.68], [33.75, -77.65], [33.5, -77.75], [33.25, -77.65], [33.0, -77.75], [32.75, -77.65], [32.5, -77.75], [32.25, -77.65], [32.0, -77.75], [31.47, -77.53], [31.32, -77.18], [31.25, -77.15], [31.0, -77.25], [30.47, -77.03], [30.32, -76.68], [30.25, -76.65], [30.0, -76.75], [29.75, -76.65], [29.5, -76.75], [28.97, -76.53], [28.82, -76.18], [28.75, -76.15], [28.5, -76.25]]]]}, "2021-08-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.5, -76.25], [27.97, -76.03], [27.75, -75.5], [27.97, -74.97], [28.5, -74.75], [28.75, -74.85], [28.82, -74.82], [28.85, -74.75], [28.75, -74.5], [28.97, -73.97], [29.5, -73.75], [29.75, -73.85], [29.82, -73.82], [29.97, -73.47], [30.5, -73.25], [30.75, -73.35], [31.0, -73.25], [31.53, -73.47], [31.68, -73.82], [31.75, -73.85], [32.0, -73.75], [32.25, -73.85], [32.5, -73.75], [32.75, -73.85], [33.0, -73.75], [33.25, -73.85], [33.5, -73.75], [34.03, -73.97], [34.18, -74.32], [34.25, -74.35], [34.5, -74.25], [35.03, -74.47], [35.18, -74.82], [35.53, -74.97], [35.75, -75.5], [35.65, -75.75], [35.75, -76.0], [35.65, -76.25], [35.68, -76.32], [36.03, -76.47], [36.25, -77.0], [36.03, -77.53], [35.68, -77.68], [35.53, -78.03], [35.0, -78.25], [34.75, -78.15], [34.5, -78.25], [33.97, -78.03], [33.82, -77.68], [33.75, -77.65], [33.5, -77.75], [33.25, -77.65], [33.0, -77.75], [32.75, -77.65], [32.5, -77.75], [32.25, -77.65], [32.0, -77.75], [31.47, -77.53], [31.32, -77.18], [31.25, -77.15], [31.0, -77.25], [30.47, -77.03], [30.32, -76.68], [30.25, -76.65], [30.0, -76.75], [29.75, -76.65], [29.5, -76.75], [28.97, -76.53], [28.82, -76.18], [28.75, -76.15], [28.5, -76.25]]]]}, "2021-08-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[28.5, -76.25], [27.97, -76.03], [27.75, -75.5], [27.97, -74.97], [28.5, -74.75], [28.75, -74.85], [28.82, -74.82], [28.85, -74.75], [28.75, -74.5], [28.97, -73.97], [29.5, -73.75], [29.75, -73.85], [29.82, -73.82], [29.97, -73.47], [30.5, -73.25], [30.75, -73.35], [31.0, -73.25], [31.53, -73.47], [31.68, -73.82], [31.75, -73.85], [32.0, -73.75], [32.25, -73.85], [32.5, -73.75], [32.75, -73.85], [33.0, -73.75], [33.25, -73.85], [33.5, -73.75], [34.03, -73.97], [34.18, -74.32], [34.25, -74.35], [34.5, -74.25], [35.03, -74.47], [35.18, -74.82], [35.53, -74.97], [35.75, -75.5], [35.65, -75.75], [35.75, -76.0], [35.65, -76.25], [35.68, -76.32], [36.03, -76.47], [36.25, -77.0], [36.03, -77.53], [35.68, -77.68], [35.53, -78.03], [35.0, -78.25], [34.75, -78.15], [34.5, -78.25], [33.97, -78.03], [33.82, -77.68], [33.75, -77.65], [33.5, -77.75], [33.25, -77.65], [33.0, -77.75], [32.75, -77.65], [32.5, -77.75], [32.25, -77.65], [32.0, -77.75], [31.47, -77.53], [31.32, -77.18], [31.25, -77.15], [31.0, -77.25], [30.47, -77.03], [30.32, -76.68], [30.25, -76.65], [30.0, -76.75], [29.75, -76.65], [29.5, -76.75], [28.97, -76.53], [28.82, -76.18], [28.75, -76.15], [28.5, -76.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.518028324525346}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.48132017399873}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-48.180637191304925, -48.86359399120661, -50.44577191093853]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-40.86221654494764, -41.50366138953447, -42.659430118612164]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.164015343268373, 7.849427299973961, 6.430517878753848]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.518028324525346, 8.913986764779679, 7.079423226658889]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.7674670910907373, 1.7410416006905525, 1.4230247349716292]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.0512914412065886, 1.9480374311615722, 1.5451735390210029]}}