{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:09.769186", "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-Mar-27_to_2023-Apr-02_8.0_-66.0"}, "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": 2023030002480}, "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": "March 27 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 02 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 111982.82062840788}, "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": ["Kong H\u00e5kon VII Hav", "Nevskaja, kotlovina", "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": -66.0}, "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": 8.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "8.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 5.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 16.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -67.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -65.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[6.75, -67.65], [6.5, -67.75], [6.25, -67.65], [6.0, -67.75], [5.47, -67.53], [5.32, -67.18], [5.25, -67.15], [5.0, -67.25], [4.47, -67.03], [4.25, -66.5], [4.47, -65.97], [5.0, -65.75], [5.25, -65.85], [5.5, -65.75], [5.75, -65.85], [6.0, -65.75], [6.25, -65.85], [6.5, -65.75], [6.75, -65.85], [6.82, -65.82], [6.97, -65.47], [7.32, -65.32], [7.47, -64.97], [8.0, -64.75], [8.25, -64.85], [8.5, -64.75], [8.75, -64.85], [8.82, -64.82], [8.97, -64.47], [9.5, -64.25], [9.75, -64.35], [10.0, -64.25], [10.25, -64.35], [10.5, -64.25], [10.75, -64.35], [11.0, -64.25], [11.25, -64.35], [11.5, -64.25], [11.75, -64.35], [12.0, -64.25], [12.25, -64.35], [12.5, -64.25], [13.0, -64.46], [13.5, -64.25], [13.75, -64.35], [14.0, -64.25], [14.53, -64.47], [14.68, -64.82], [14.75, -64.85], [15.0, -64.75], [15.25, -64.85], [15.32, -64.82], [15.47, -64.47], [16.0, -64.25], [16.25, -64.35], [16.5, -64.25], [17.03, -64.47], [17.25, -65.0], [17.03, -65.53], [16.68, -65.68], [16.53, -66.03], [16.0, -66.25], [15.75, -66.15], [15.68, -66.18], [15.53, -66.53], [15.0, -66.75], [14.75, -66.65], [14.5, -66.75], [14.25, -66.65], [14.18, -66.68], [14.15, -66.75], [14.25, -67.0], [14.03, -67.53], [13.68, -67.68], [13.53, -68.03], [13.0, -68.25], [12.75, -68.15], [12.5, -68.25], [12.25, -68.15], [12.0, -68.25], [11.75, -68.15], [11.5, -68.25], [11.25, -68.15], [11.0, -68.25], [10.75, -68.15], [10.5, -68.25], [10.25, -68.15], [10.0, -68.25], [9.75, -68.15], [9.5, -68.25], [9.25, -68.15], [9.0, -68.25], [8.75, -68.15], [8.5, -68.25], [8.25, -68.15], [8.0, -68.25], [7.75, -68.15], [7.5, -68.25], [6.97, -68.03], [6.82, -67.68], [6.75, -67.65]]]]}}, "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": {"2023-03-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, -64.97], [8.0, -64.75], [8.25, -64.85], [8.5, -64.75], [8.75, -64.85], [8.82, -64.82], [8.97, -64.47], [9.5, -64.25], [9.75, -64.35], [10.0, -64.25], [10.25, -64.35], [10.5, -64.25], [10.75, -64.35], [11.0, -64.25], [11.25, -64.35], [11.5, -64.25], [11.75, -64.35], [12.0, -64.25], [12.25, -64.35], [12.5, -64.25], [13.0, -64.46], [13.5, -64.25], [13.75, -64.35], [14.0, -64.25], [14.53, -64.47], [14.75, -65.0], [14.65, -65.25], [14.75, -65.5], [14.53, -66.03], [14.18, -66.18], [14.03, -66.53], [13.5, -66.75], [13.25, -66.65], [13.0, -66.75], [12.75, -66.65], [12.5, -66.75], [12.25, -66.65], [12.0, -66.75], [11.75, -66.65], [11.5, -66.75], [11.25, -66.65], [11.0, -66.75], [10.75, -66.65], [10.5, -66.75], [10.25, -66.65], [10.0, -66.75], [9.75, -66.65], [9.5, -66.75], [9.25, -66.65], [9.0, -66.75], [8.75, -66.65], [8.5, -66.75], [8.25, -66.65], [8.0, -66.75], [7.75, -66.65], [7.5, -66.75], [6.97, -66.53], [6.75, -66.0], [6.97, -65.47], [7.32, -65.32], [7.47, -64.97]]]]}, "2023-03-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, -64.97], [8.0, -64.75], [8.25, -64.85], [8.5, -64.75], [8.75, -64.85], [8.82, -64.82], [8.97, -64.47], [9.5, -64.25], [9.75, -64.35], [10.0, -64.25], [10.25, -64.35], [10.5, -64.25], [10.75, -64.35], [11.0, -64.25], [11.25, -64.35], [11.5, -64.25], [11.75, -64.35], [12.0, -64.25], [12.25, -64.35], [12.5, -64.25], [13.0, -64.46], [13.5, -64.25], [13.75, -64.35], [14.0, -64.25], [14.53, -64.47], [14.75, -65.0], [14.65, -65.25], [14.75, -65.5], [14.53, -66.03], [14.18, -66.18], [14.03, -66.53], [13.5, -66.75], [13.25, -66.65], [13.0, -66.75], [12.75, -66.65], [12.5, -66.75], [12.25, -66.65], [12.0, -66.75], [11.75, -66.65], [11.5, -66.75], [11.25, -66.65], [11.0, -66.75], [10.75, -66.65], [10.5, -66.75], [10.25, -66.65], [10.0, -66.75], [9.75, -66.65], [9.5, -66.75], [9.25, -66.65], [9.0, -66.75], [8.75, -66.65], [8.5, -66.75], [8.25, -66.65], [8.0, -66.75], [7.75, -66.65], [7.5, -66.75], [6.97, -66.53], [6.75, -66.0], [6.97, -65.47], [7.32, -65.32], [7.47, -64.97]]]]}, "2023-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.47, -64.97], [8.0, -64.75], [8.25, -64.85], [8.5, -64.75], [8.75, -64.85], [8.82, -64.82], [8.97, -64.47], [9.5, -64.25], [9.75, -64.35], [10.0, -64.25], [10.25, -64.35], [10.5, -64.25], [10.75, -64.35], [11.0, -64.25], [11.25, -64.35], [11.5, -64.25], [11.75, -64.35], [12.0, -64.25], [12.25, -64.35], [12.5, -64.25], [13.0, -64.46], [13.5, -64.25], [13.75, -64.35], [14.0, -64.25], [14.53, -64.47], [14.75, -65.0], [14.65, -65.25], [14.75, -65.5], [14.53, -66.03], [14.18, -66.18], [14.03, -66.53], [13.5, -66.75], [13.25, -66.65], [13.0, -66.75], [12.75, -66.65], [12.5, -66.75], [12.25, -66.65], [12.0, -66.75], [11.75, -66.65], [11.5, -66.75], [11.25, -66.65], [11.0, -66.75], [10.75, -66.65], [10.5, -66.75], [10.25, -66.65], [10.0, -66.75], [9.75, -66.65], [9.5, -66.75], [9.25, -66.65], [9.0, -66.75], [8.75, -66.65], [8.5, -66.75], [8.25, -66.65], [8.0, -66.75], [7.75, -66.65], [7.5, -66.75], [6.97, -66.53], [6.75, -66.0], [6.97, -65.47], [7.32, -65.32], [7.47, -64.97]]]]}, "2023-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.5, -68.25], [6.97, -68.03], [6.75, -67.5], [6.97, -66.97], [7.5, -66.75], [7.75, -66.85], [8.0, -66.75], [8.25, -66.85], [8.5, -66.75], [8.75, -66.85], [9.0, -66.75], [9.25, -66.85], [9.32, -66.82], [9.47, -66.47], [10.0, -66.25], [10.25, -66.35], [10.5, -66.25], [10.75, -66.35], [11.0, -66.25], [11.25, -66.35], [11.5, -66.25], [11.75, -66.35], [12.0, -66.25], [12.25, -66.35], [12.5, -66.25], [12.75, -66.35], [12.82, -66.32], [12.97, -65.97], [13.5, -65.75], [14.03, -65.97], [14.25, -66.5], [14.15, -66.75], [14.25, -67.0], [14.03, -67.53], [13.68, -67.68], [13.53, -68.03], [13.0, -68.25], [12.75, -68.15], [12.5, -68.25], [12.25, -68.15], [12.0, -68.25], [11.75, -68.15], [11.5, -68.25], [11.25, -68.15], [11.0, -68.25], [10.75, -68.15], [10.5, -68.25], [10.25, -68.15], [10.0, -68.25], [9.75, -68.15], [9.5, -68.25], [9.25, -68.15], [9.0, -68.25], [8.75, -68.15], [8.5, -68.25], [8.25, -68.15], [8.0, -68.25], [7.75, -68.15], [7.5, -68.25]]]]}, "2023-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, -67.25], [4.47, -67.03], [4.25, -66.5], [4.47, -65.97], [5.0, -65.75], [5.25, -65.85], [5.5, -65.75], [5.75, -65.85], [6.0, -65.75], [6.25, -65.85], [6.5, -65.75], [6.75, -65.85], [6.82, -65.82], [6.97, -65.47], [7.5, -65.25], [7.75, -65.35], [8.0, -65.25], [8.25, -65.35], [8.5, -65.25], [8.75, -65.35], [8.82, -65.32], [8.97, -64.97], [9.32, -64.82], [9.47, -64.47], [10.0, -64.25], [10.25, -64.35], [10.5, -64.25], [10.75, -64.35], [11.0, -64.25], [11.53, -64.47], [11.68, -64.82], [11.75, -64.85], [12.0, -64.75], [12.25, -64.85], [12.5, -64.75], [12.75, -64.85], [13.0, -64.75], [13.25, -64.85], [13.5, -64.75], [13.75, -64.85], [14.0, -64.75], [14.25, -64.85], [14.5, -64.75], [14.75, -64.85], [15.0, -64.75], [15.25, -64.85], [15.32, -64.82], [15.47, -64.47], [16.0, -64.25], [16.25, -64.35], [16.5, -64.25], [17.03, -64.47], [17.25, -65.0], [17.03, -65.53], [16.68, -65.68], [16.53, -66.03], [16.0, -66.25], [15.75, -66.15], [15.68, -66.18], [15.53, -66.53], [15.0, -66.75], [14.75, -66.65], [14.5, -66.75], [14.25, -66.65], [14.18, -66.68], [14.15, -66.75], [14.25, -67.0], [14.03, -67.53], [13.68, -67.68], [13.53, -68.03], [13.0, -68.25], [12.75, -68.15], [12.5, -68.25], [12.25, -68.15], [12.0, -68.25], [11.75, -68.15], [11.5, -68.25], [11.25, -68.15], [11.0, -68.25], [10.75, -68.15], [10.5, -68.25], [10.25, -68.15], [10.0, -68.25], [9.75, -68.15], [9.5, -68.25], [9.25, -68.15], [9.0, -68.25], [8.75, -68.15], [8.5, -68.25], [8.25, -68.15], [8.0, -68.25], [7.75, -68.15], [7.5, -68.25], [6.97, -68.03], [6.82, -67.68], [6.75, -67.65], [6.5, -67.75], [6.25, -67.65], [6.0, -67.75], [5.47, -67.53], [5.32, -67.18], [5.25, -67.15], [5.0, -67.25]]]]}, "2023-04-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, -67.25], [4.47, -67.03], [4.25, -66.5], [4.47, -65.97], [5.0, -65.75], [5.25, -65.85], [5.5, -65.75], [5.75, -65.85], [6.0, -65.75], [6.25, -65.85], [6.5, -65.75], [6.75, -65.85], [6.82, -65.82], [6.97, -65.47], [7.5, -65.25], [7.75, -65.35], [8.0, -65.25], [8.25, -65.35], [8.5, -65.25], [8.75, -65.35], [8.82, -65.32], [8.97, -64.97], [9.32, -64.82], [9.47, -64.47], [10.0, -64.25], [10.25, -64.35], [10.5, -64.25], [10.75, -64.35], [11.0, -64.25], [11.53, -64.47], [11.68, -64.82], [11.75, -64.85], [12.0, -64.75], [12.25, -64.85], [12.5, -64.75], [12.75, -64.85], [13.0, -64.75], [13.25, -64.85], [13.5, -64.75], [13.75, -64.85], [14.0, -64.75], [14.25, -64.85], [14.5, -64.75], [14.75, -64.85], [15.0, -64.75], [15.25, -64.85], [15.32, -64.82], [15.47, -64.47], [16.0, -64.25], [16.25, -64.35], [16.5, -64.25], [17.03, -64.47], [17.25, -65.0], [17.03, -65.53], [16.68, -65.68], [16.53, -66.03], [16.0, -66.25], [15.75, -66.15], [15.68, -66.18], [15.53, -66.53], [15.0, -66.75], [14.75, -66.65], [14.5, -66.75], [14.25, -66.65], [14.18, -66.68], [14.15, -66.75], [14.25, -67.0], [14.03, -67.53], [13.68, -67.68], [13.53, -68.03], [13.0, -68.25], [12.75, -68.15], [12.5, -68.25], [12.25, -68.15], [12.0, -68.25], [11.75, -68.15], [11.5, -68.25], [11.25, -68.15], [11.0, -68.25], [10.75, -68.15], [10.5, -68.25], [10.25, -68.15], [10.0, -68.25], [9.75, -68.15], [9.5, -68.25], [9.25, -68.15], [9.0, -68.25], [8.75, -68.15], [8.5, -68.25], [8.25, -68.15], [8.0, -68.25], [7.75, -68.15], [7.5, -68.25], [6.97, -68.03], [6.82, -67.68], [6.75, -67.65], [6.5, -67.75], [6.25, -67.65], [6.0, -67.75], [5.47, -67.53], [5.32, -67.18], [5.25, -67.15], [5.0, -67.25]]]]}, "2023-04-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[5.0, -67.25], [4.47, -67.03], [4.25, -66.5], [4.47, -65.97], [5.0, -65.75], [5.25, -65.85], [5.5, -65.75], [5.75, -65.85], [6.0, -65.75], [6.25, -65.85], [6.5, -65.75], [6.75, -65.85], [6.82, -65.82], [6.97, -65.47], [7.5, -65.25], [7.75, -65.35], [8.0, -65.25], [8.25, -65.35], [8.5, -65.25], [8.75, -65.35], [8.82, -65.32], [8.97, -64.97], [9.32, -64.82], [9.47, -64.47], [10.0, -64.25], [10.25, -64.35], [10.5, -64.25], [10.75, -64.35], [11.0, -64.25], [11.53, -64.47], [11.68, -64.82], [11.75, -64.85], [12.0, -64.75], [12.25, -64.85], [12.5, -64.75], [12.75, -64.85], [13.0, -64.75], [13.25, -64.85], [13.5, -64.75], [13.75, -64.85], [14.0, -64.75], [14.25, -64.85], [14.5, -64.75], [14.75, -64.85], [15.0, -64.75], [15.25, -64.85], [15.32, -64.82], [15.47, -64.47], [16.0, -64.25], [16.25, -64.35], [16.5, -64.25], [17.03, -64.47], [17.25, -65.0], [17.03, -65.53], [16.68, -65.68], [16.53, -66.03], [16.0, -66.25], [15.75, -66.15], [15.68, -66.18], [15.53, -66.53], [15.0, -66.75], [14.75, -66.65], [14.5, -66.75], [14.25, -66.65], [14.18, -66.68], [14.03, -67.03], [13.5, -67.25], [13.25, -67.15], [13.0, -67.25], [12.75, -67.15], [12.5, -67.25], [12.25, -67.15], [12.18, -67.18], [12.03, -67.53], [11.5, -67.75], [11.25, -67.65], [11.0, -67.75], [10.75, -67.65], [10.5, -67.75], [10.25, -67.65], [10.0, -67.75], [9.75, -67.65], [9.5, -67.75], [9.25, -67.65], [9.0, -67.75], [8.75, -67.65], [8.5, -67.75], [8.25, -67.65], [8.0, -67.75], [7.75, -67.65], [7.5, -67.75], [7.25, -67.65], [7.0, -67.75], [6.75, -67.65], [6.5, -67.75], [6.25, -67.65], [6.0, -67.75], [5.47, -67.53], [5.32, -67.18], [5.25, -67.15], [5.0, -67.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 3.493730717007111}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.0571374513375127}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-0.010137778999649072, -0.34112996097042014, -0.177992579566137, -0.9413048381475164, -0.4817238803639725, -0.31228076586853604, -0.4366686839711065]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.11067266717014945, -0.1548259090544093, -0.03976951893542946, -0.6445513113330321, -0.1574886026138529, -0.04634988685336339, -0.1361593177335294]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.8977976057850499, 1.6149182349321085, 1.824281321209763, 2.463691481944081, 2.0861629605314653, 2.3169228289531705, 2.002349759900501]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.163057857471472, 1.8463391719233755, 2.0518197493884145, 2.855337813518304, 2.8829639299202086, 3.493730717007111, 2.323861625424854]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4735346878650282, 1.1902253054435126, 1.298288290656881, 1.2283088509603488, 1.2936733642100504, 1.4291544281514077, 1.2894162203302266]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5759124528845623, 1.2503327143442444, 1.3736800795360327, 1.2881243011111936, 1.4566764645947927, 1.6208551031763145, 1.4864305838762726]}}