{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:23:07.892248", "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-Mar-09_to_2021-Mar-11_280.0_48.5"}, "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": 2021030001949}, "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 09 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 11 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": 74473.26270129475}, "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": ["Canada"]}, "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": 48.5}, "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": 280.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "280.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 277.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 282.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 47.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 50.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-83.53, 46.97], [-83.75, 47.5], [-83.53, 48.03], [-83.0, 48.25], [-82.75, 48.146], [-82.677, 48.177], [-82.53, 48.53], [-82.0, 48.75], [-81.75, 48.646], [-81.677, 48.677], [-81.53, 49.03], [-81.177, 49.177], [-81.03, 49.53], [-80.5, 49.75], [-80.25, 49.646], [-80.0, 49.75], [-79.75, 49.646], [-79.5, 49.75], [-79.25, 49.646], [-79.177, 49.677], [-79.03, 50.03], [-78.677, 50.177], [-78.53, 50.53], [-78.0, 50.75], [-77.47, 50.53], [-77.25, 50.0], [-77.47, 49.47], [-77.823, 49.323], [-77.854, 49.25], [-77.75, 49.0], [-77.957, 48.5], [-77.75, 48.0], [-77.97, 47.47], [-78.323, 47.323], [-78.354, 47.25], [-78.25, 47.0], [-78.47, 46.47], [-79.0, 46.25], [-79.25, 46.354], [-79.5, 46.25], [-79.75, 46.354], [-80.0, 46.25], [-80.25, 46.354], [-80.5, 46.25], [-80.75, 46.354], [-81.0, 46.25], [-81.25, 46.354], [-81.5, 46.25], [-81.75, 46.354], [-82.0, 46.25], [-82.53, 46.47], [-82.677, 46.823], [-82.75, 46.854], [-83.0, 46.75], [-83.53, 46.97]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America", "E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-03-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-82.75, 46.85355339059328], [-83.0, 46.75], [-83.53033008588989, 46.96966991411009], [-83.75, 47.5], [-83.53033008588989, 48.03033008588991], [-83.0, 48.25], [-82.75, 48.14644660940672], [-82.67677669529661, 48.17677669529664], [-82.53033008588989, 48.53033008588991], [-82.0, 48.75], [-81.75, 48.64644660940672], [-81.67677669529661, 48.67677669529664], [-81.53033008588989, 49.03033008588991], [-81.17677669529661, 49.17677669529664], [-81.03033008588989, 49.53033008588991], [-80.5, 49.75], [-80.25, 49.64644660940672], [-80.0, 49.75], [-79.75, 49.64644660940672], [-79.5, 49.75], [-79.25, 49.64644660940672], [-79.17677669529661, 49.67677669529664], [-79.03033008588989, 50.03033008588991], [-78.67677669529661, 50.17677669529664], [-78.53033008588989, 50.53033008588991], [-78.0, 50.75], [-77.46966991411011, 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anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [10.936830772038888, 15.772145330994476, 14.501801843398368]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.441016604886299, 1.7448437758257989, 1.7167742780377087]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.589579689043875, 2.1179192410456635, 2.0661548754960943]}}