{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:23:10.996850", "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-19_to_2021-Mar-21_44.5_-77.0"}, "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": 2021030002340}, "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 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 21 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": 78079.4489874699}, "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": -77.0}, "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": 44.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "44.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 48.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -79.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -75.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[35.47, -77.53], [35.25, -77.0], [35.47, -76.47], [36.0, -76.25], [36.25, -76.354], [36.5, -76.25], [36.75, -76.354], [36.823, -76.323], [36.97, -75.97], [37.5, -75.75], [37.75, -75.854], [38.0, -75.75], [38.25, -75.854], [38.5, -75.75], [38.75, -75.854], [39.0, -75.75], [39.25, -75.854], [39.5, -75.75], [39.75, -75.854], [39.823, -75.823], [39.97, -75.47], [40.5, -75.25], [40.75, -75.354], [41.0, -75.25], [41.25, -75.354], [41.5, -75.25], [41.75, -75.354], [42.0, -75.25], [42.25, -75.354], [42.5, -75.25], [42.75, -75.354], [43.0, -75.25], [43.25, -75.354], [43.5, -75.25], [43.75, -75.354], [43.823, -75.323], [43.97, -74.97], [44.5, -74.75], [44.75, -74.854], [45.0, -74.75], [45.25, -74.854], [45.5, -74.75], [45.75, -74.854], [46.0, -74.75], [46.25, -74.854], [46.5, -74.75], [46.75, -74.854], [47.0, -74.75], [47.25, -74.854], [47.5, -74.75], [47.75, -74.854], [48.0, -74.75], [48.25, -74.854], [48.5, -74.75], [49.03, -74.97], [49.25, -75.5], [49.146, -75.75], [49.25, -76.0], [49.03, -76.53], [48.677, -76.677], [48.53, -77.03], [48.177, -77.177], [48.03, -77.53], [47.677, -77.677], [47.53, -78.03], [47.0, -78.25], [46.75, -78.146], [46.677, -78.177], [46.53, -78.53], [46.177, -78.677], [46.03, -79.03], [45.5, -79.25], [45.25, -79.146], [45.0, -79.25], [44.75, -79.146], [44.5, -79.25], [44.25, -79.146], [44.0, -79.25], [43.75, -79.146], [43.5, -79.25], [43.25, -79.146], [43.177, -79.177], [43.03, -79.53], [42.5, -79.75], [41.97, -79.53], [41.823, -79.177], [41.75, -79.146], [41.5, -79.25], [41.25, -79.146], [41.0, -79.25], [40.47, -79.03], [40.323, -78.677], [39.97, -78.53], [39.823, -78.177], [39.75, -78.146], [39.5, -78.25], [39.25, -78.146], [39.0, -78.25], [38.47, -78.03], [38.323, -77.677], [38.25, -77.646], [38.0, -77.75], [37.75, -77.646], [37.5, -77.75], [37.25, -77.646], [37.0, -77.75], [36.75, -77.646], [36.5, -77.75], [36.25, -77.646], [36.0, -77.75], [35.47, -77.53]]]}}, "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": {"2021-03-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[36.25, -77.64644660940672], [36.0, -77.75], [35.46966991411009, -77.53033008588991], [35.25, -77.0], [35.46966991411009, -76.46966991411009], [36.0, -76.25], [36.25, -76.35355339059328], [36.5, -76.25], [36.75, -76.35355339059328], [36.82322330470336, -76.32322330470336], [36.96966991411009, -75.96966991411009], [37.5, -75.75], [37.75, -75.85355339059328], [38.0, -75.75], [38.25, -75.85355339059328], [38.5, -75.75], [38.75, -75.85355339059328], [39.0, -75.75], [39.25, -75.85355339059328], [39.5, -75.75], [39.75, -75.85355339059328], [39.82322330470336, -75.82322330470336], [39.96966991411009, -75.46966991411009], [40.5, -75.25], [40.75, -75.35355339059328], [41.0, -75.25], [41.25, -75.35355339059328], [41.5, -75.25], [41.75, -75.35355339059328], [42.0, -75.25], [42.25, -75.35355339059328], [42.5, -75.25], [42.75, -75.35355339059328], [43.0, -75.25], [43.25, -75.35355339059328], [43.5, -75.25], [43.75, -75.35355339059328], [43.82322330470336, -75.32322330470336], [43.96966991411009, -74.96966991411009], [44.5, -74.75], [44.75, -74.85355339059328], [45.0, -74.75], [45.25, -74.85355339059328], [45.5, -74.75], [45.75, -74.85355339059328], [46.0, -74.75], [46.25, -74.85355339059328], [46.5, -74.75], [46.75, -74.85355339059328], [47.0, -74.75], [47.25, -74.85355339059328], [47.5, -74.75], [47.75, -74.85355339059328], [48.0, -74.75], [48.25, -74.85355339059328], [48.5, -74.75], [49.03033008588991, -74.96966991411009], [49.25, -75.5], [49.14644660940672, -75.75], [49.25, -76.0], [49.03033008588991, -76.53033008588991], [48.67677669529664, -76.67677669529664], [48.53033008588991, -77.03033008588991], [48.17677669529664, -77.17677669529664], [48.03033008588991, -77.53033008588991], [47.67677669529664, -77.67677669529664], [47.53033008588991, -78.03033008588991], [47.0, -78.25], [46.75, -78.14644660940672], [46.67677669529664, -78.17677669529664], [46.53033008588991, -78.53033008588991], [46.17677669529664, -78.67677669529664], [46.03033008588991, -79.03033008588991], [45.5, -79.25], [45.25, -79.14644660940672], [45.0, -79.25], [44.75, -79.14644660940672], [44.5, -79.25], [44.25, -79.14644660940672], [44.0, -79.25], [43.75, -79.14644660940672], [43.5, -79.25], [43.25, -79.14644660940672], [43.17677669529664, -79.17677669529664], [43.03033008588991, -79.53033008588991], [42.5, -79.75], [41.96966991411009, -79.53033008588991], [41.82322330470336, -79.17677669529664], [41.75, -79.14644660940672], [41.5, -79.25], [41.25, -79.14644660940672], [41.0, -79.25], [40.46966991411009, -79.03033008588991], [40.32322330470336, -78.67677669529664], [39.96966991411009, -78.53033008588991], [39.82322330470336, -78.17677669529664], [39.75, -78.14644660940672], [39.5, -78.25], [39.25, -78.14644660940672], [39.0, -78.25], [38.46966991411009, -78.03033008588991], [38.32322330470336, -77.67677669529664], [38.25, -77.64644660940672], [38.0, -77.75], [37.75, -77.64644660940672], [37.5, -77.75], [37.25, -77.64644660940672], [37.0, -77.75], [36.75, -77.64644660940672], [36.5, -77.75], [36.25, -77.64644660940672]]]}, "2021-03-20T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[36.25, -77.64644660940672], [36.0, -77.75], [35.46966991411009, -77.53033008588991], [35.25, -77.0], [35.46966991411009, -76.46966991411009], [36.0, -76.25], [36.25, -76.35355339059328], [36.5, -76.25], [36.75, -76.35355339059328], [36.82322330470336, -76.32322330470336], [36.96966991411009, -75.96966991411009], [37.5, -75.75], [37.75, -75.85355339059328], [38.0, -75.75], [38.25, -75.85355339059328], [38.5, -75.75], [38.75, -75.85355339059328], [39.0, -75.75], [39.25, -75.85355339059328], [39.5, -75.75], [39.75, -75.85355339059328], [39.82322330470336, -75.82322330470336], [39.96966991411009, -75.46966991411009], [40.5, -75.25], [40.75, -75.35355339059328], [41.0, -75.25], [41.25, -75.35355339059328], [41.5, -75.25], [41.75, -75.35355339059328], [42.0, -75.25], [42.25, -75.35355339059328], [42.5, -75.25], [42.75, -75.35355339059328], [43.0, -75.25], [43.25, -75.35355339059328], [43.5, -75.25], [43.75, -75.35355339059328], [43.82322330470336, -75.32322330470336], [43.96966991411009, -74.96966991411009], [44.5, -74.75], [44.75, -74.85355339059328], [45.0, -74.75], [45.25, -74.85355339059328], [45.5, -74.75], [45.75, -74.85355339059328], [46.0, -74.75], [46.25, -74.85355339059328], [46.5, -74.75], [46.75, -74.85355339059328], [47.0, -74.75], [47.25, -74.85355339059328], [47.5, -74.75], [47.75, -74.85355339059328], [48.0, -74.75], [48.25, -74.85355339059328], [48.5, -74.75], [49.03033008588991, -74.96966991411009], [49.25, -75.5], [49.14644660940672, -75.75], [49.25, -76.0], [49.03033008588991, -76.53033008588991], [48.67677669529664, -76.67677669529664], [48.53033008588991, -77.03033008588991], [48.17677669529664, -77.17677669529664], [48.03033008588991, -77.53033008588991], [47.67677669529664, -77.67677669529664], [47.53033008588991, -78.03033008588991], [47.0, -78.25], [46.75, -78.14644660940672], [46.67677669529664, -78.17677669529664], [46.53033008588991, -78.53033008588991], [46.17677669529664, -78.67677669529664], [46.03033008588991, -79.03033008588991], [45.5, -79.25], [45.25, -79.14644660940672], [45.0, -79.25], [44.75, -79.14644660940672], [44.5, -79.25], [44.25, -79.14644660940672], [44.0, -79.25], [43.75, -79.14644660940672], [43.5, -79.25], [43.25, -79.14644660940672], [43.17677669529664, -79.17677669529664], [43.03033008588991, -79.53033008588991], [42.5, -79.75], [41.96966991411009, -79.53033008588991], [41.82322330470336, -79.17677669529664], [41.75, -79.14644660940672], [41.5, -79.25], [41.25, -79.14644660940672], [41.0, -79.25], [40.46966991411009, -79.03033008588991], [40.32322330470336, -78.67677669529664], [39.96966991411009, -78.53033008588991], [39.82322330470336, -78.17677669529664], [39.75, -78.14644660940672], [39.5, -78.25], [39.25, -78.14644660940672], [39.0, -78.25], [38.46966991411009, -78.03033008588991], [38.32322330470336, -77.67677669529664], [38.25, -77.64644660940672], [38.0, -77.75], [37.75, -77.64644660940672], [37.5, -77.75], [37.25, -77.64644660940672], [37.0, -77.75], [36.75, -77.64644660940672], [36.5, -77.75], [36.25, -77.64644660940672]]]}, "2021-03-21T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[36.25, -77.64644660940672], [36.0, -77.75], [35.46966991411009, -77.53033008588991], [35.25, -77.0], [35.46966991411009, -76.46966991411009], [36.0, -76.25], [36.25, -76.35355339059328], [36.5, -76.25], [36.75, -76.35355339059328], [36.82322330470336, -76.32322330470336], [36.96966991411009, -75.96966991411009], [37.5, -75.75], [37.75, -75.85355339059328], [38.0, -75.75], [38.25, -75.85355339059328], [38.5, -75.75], [38.75, -75.85355339059328], [39.0, -75.75], [39.25, -75.85355339059328], [39.5, -75.75], [39.75, -75.85355339059328], [39.82322330470336, -75.82322330470336], [39.96966991411009, -75.46966991411009], [40.5, -75.25], [40.75, -75.35355339059328], [41.0, -75.25], [41.25, -75.35355339059328], [41.5, -75.25], [41.75, -75.35355339059328], [42.0, -75.25], [42.25, -75.35355339059328], [42.5, -75.25], [42.75, -75.35355339059328], [43.0, -75.25], [43.25, -75.35355339059328], [43.5, -75.25], [43.75, -75.35355339059328], [43.82322330470336, -75.32322330470336], [43.96966991411009, -74.96966991411009], [44.5, -74.75], [44.75, -74.85355339059328], [45.0, -74.75], [45.25, -74.85355339059328], [45.5, -74.75], [45.75, -74.85355339059328], [46.0, -74.75], [46.25, -74.85355339059328], [46.5, -74.75], [46.75, -74.85355339059328], [47.0, -74.75], [47.25, -74.85355339059328], [47.5, -74.75], [47.75, -74.85355339059328], [48.0, -74.75], [48.25, -74.85355339059328], [48.5, -74.75], [49.03033008588991, -74.96966991411009], [49.25, -75.5], [49.14644660940672, -75.75], [49.25, -76.0], [49.03033008588991, -76.53033008588991], [48.67677669529664, -76.67677669529664], [48.53033008588991, -77.03033008588991], [48.17677669529664, -77.17677669529664], [48.03033008588991, -77.53033008588991], [47.67677669529664, -77.67677669529664], [47.53033008588991, -78.03033008588991], [47.0, -78.25], [46.75, -78.14644660940672], [46.67677669529664, -78.17677669529664], [46.53033008588991, -78.53033008588991], [46.17677669529664, -78.67677669529664], [46.03033008588991, -79.03033008588991], [45.5, -79.25], [45.25, -79.14644660940672], [45.0, -79.25], [44.75, -79.14644660940672], [44.5, -79.25], [44.25, -79.14644660940672], [44.0, -79.25], [43.75, -79.14644660940672], [43.5, -79.25], [43.25, -79.14644660940672], [43.17677669529664, -79.17677669529664], [43.03033008588991, -79.53033008588991], [42.5, -79.75], [41.96966991411009, -79.53033008588991], [41.82322330470336, -79.17677669529664], [41.75, -79.14644660940672], [41.5, -79.25], [41.25, -79.14644660940672], [41.0, -79.25], [40.46966991411009, -79.03033008588991], [40.32322330470336, -78.67677669529664], [39.96966991411009, -78.53033008588991], [39.82322330470336, -78.17677669529664], [39.75, -78.14644660940672], [39.5, -78.25], [39.25, -78.14644660940672], [39.0, -78.25], [38.46966991411009, -78.03033008588991], [38.32322330470336, -77.67677669529664], [38.25, -77.64644660940672], [38.0, -77.75], [37.75, -77.64644660940672], [37.5, -77.75], [37.25, -77.64644660940672], [37.0, -77.75], [36.75, -77.64644660940672], [36.5, -77.75], [36.25, -77.64644660940672]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 9.724100763099557}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 7.425837751468892}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-46.018728518358444, -46.21160085620116, -47.54352410357126]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-42.83470081106614, -44.78103824727805, -46.059519001541645]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [7.727116989091165, 7.775330251483939, 6.775066013831557]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [9.724100763099557, 9.6581770696327, 8.211193185770554]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.8772708597809642, 1.8784535431950453, 1.6600265240953191]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [2.2320062819261923, 2.163226063435759, 1.9235618199336242]}}