{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:57.393017", "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-Jan-02_to_2022-Jan-06_302.0_69.5"}, "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": 2022010001517}, "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": "January 02 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 06 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 56027.691274679586}, "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": ["Greenland"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": 69.5}, "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": 302.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "302.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 300.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 305.5}, "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": 71.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-59.53, 69.03], [-59.18, 69.18], [-59.15, 69.25], [-59.25, 69.5], [-59.15, 69.75], [-59.25, 70.0], [-59.03, 70.53], [-58.68, 70.68], [-58.53, 71.03], [-58.18, 71.18], [-58.03, 71.53], [-57.5, 71.75], [-57.25, 71.65], [-57.0, 71.75], [-56.75, 71.65], [-56.5, 71.75], [-56.25, 71.65], [-56.0, 71.75], [-55.75, 71.65], [-55.5, 71.75], [-55.25, 71.65], [-55.0, 71.75], [-54.47, 71.53], [-54.32, 71.18], [-53.97, 71.03], [-53.75, 70.5], [-53.97, 69.97], [-54.5, 69.75], [-54.75, 69.85], [-54.82, 69.82], [-54.97, 69.47], [-55.5, 69.25], [-55.75, 69.35], [-55.87, 69.3], [-55.75, 69.0], [-55.85, 68.75], [-55.75, 68.5], [-55.97, 67.97], [-56.32, 67.82], [-56.35, 67.75], [-56.32, 67.68], [-55.97, 67.53], [-55.75, 67.0], [-55.97, 66.47], [-56.5, 66.25], [-57.0, 66.46], [-57.5, 66.25], [-57.75, 66.35], [-58.0, 66.25], [-58.53, 66.47], [-58.68, 66.82], [-58.75, 66.85], [-59.0, 66.75], [-59.25, 66.85], [-59.5, 66.75], [-60.03, 66.97], [-60.25, 67.5], [-60.15, 67.75], [-60.25, 68.0], [-60.03, 68.53], [-59.68, 68.68], [-59.53, 69.03]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Greenland/Iceland"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.25, 68.0], [-60.02999999999997, 68.53], [-59.68000000000001, 68.68], [-59.52999999999997, 69.03], [-59.0, 69.25], [-58.75, 69.15], [-58.68000000000001, 69.18], [-58.64999999999998, 69.25], [-58.75, 69.5], [-58.52999999999997, 70.03], [-58.18000000000001, 70.18], [-58.02999999999997, 70.53], [-57.5, 70.75], [-56.97000000000003, 70.53], [-56.81999999999999, 70.18], [-56.47000000000003, 70.03], [-56.25, 69.5], [-56.47000000000003, 68.97], [-56.81999999999999, 68.82], [-56.85000000000002, 68.75], [-56.81999999999999, 68.68], [-56.47000000000003, 68.53], [-56.25, 68.0], [-56.35000000000002, 67.75], [-56.25, 67.5], [-56.47000000000003, 66.97], [-56.81999999999999, 66.82], [-56.97000000000003, 66.47], [-57.5, 66.25], [-57.75, 66.35], 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1.4665706505934963, -1.2437334555970097]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [10.887744715099325, 11.471099482732525, 12.316599780838496, 14.280704488207052, 11.085165186022293]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [12.3741514469761, 13.887454683999067, 15.351788857747295, 16.794200098144614, 13.50768977829324]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5459062451304204, 1.6253714996756032, 1.8381358637070497, 2.1697190902554335, 1.6795790543414102]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.750009549847423, 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