{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:16.864975", "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": "2020-Jul-05_to_2020-Jul-08_290.5_60.0"}, "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": 2020070001692}, "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": "July 05 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 08 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 60131.69627307071}, "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": 60.0}, "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": 290.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "290.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 289.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 292.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 57.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 61.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-70.646, 60.25], [-70.646, 60.251], [-70.677, 60.323], [-71.03, 60.47], [-71.25, 61.0], [-71.03, 61.53], [-70.677, 61.677], [-70.53, 62.03], [-70.0, 62.25], [-69.75, 62.146], [-69.5, 62.25], [-69.25, 62.146], [-69.0, 62.25], [-68.47, 62.03], [-68.323, 61.677], [-68.25, 61.646], [-68.0, 61.75], [-67.47, 61.53], [-67.25, 61.0], [-67.354, 60.75], [-67.25, 60.5], [-67.47, 59.97], [-68.0, 59.75], [-67.47, 59.53], [-67.323, 59.177], [-66.97, 59.03], [-66.75, 58.5], [-66.97, 57.97], [-67.5, 57.75], [-67.75, 57.854], [-67.823, 57.823], [-67.854, 57.75], [-67.823, 57.677], [-67.47, 57.53], [-67.25, 57.0], [-67.47, 56.47], [-68.0, 56.25], [-68.25, 56.354], [-68.5, 56.25], [-68.75, 56.354], [-69.0, 56.25], [-69.53, 56.47], [-69.677, 56.823], [-69.75, 56.854], [-70.0, 56.75], [-70.53, 56.97], [-70.75, 57.5], [-70.646, 57.75], [-70.75, 58.0], [-70.625, 58.302], [-71.03, 58.47], [-71.25, 59.0], [-71.03, 59.53], [-70.677, 59.677], [-70.646, 59.75], [-70.75, 60.0], [-70.646, 60.25]], [[-68.427, 59.927], [-68.323, 59.677], [-68.25, 59.646], [-68.0, 59.75], [-68.427, 59.927]], [[-68.75, 60.354], [-68.875, 60.302], [-68.823, 60.177], [-68.573, 60.073], [-68.677, 60.323], [-68.75, 60.354]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-07-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-70.67677669529661, 59.67677669529664], [-70.64644660940672, 59.75], [-70.75, 60.0], [-70.64644660940672, 60.25], [-70.75, 60.5], [-70.53033008588989, 61.03033008588991], [-70.0, 61.25], [-69.46966991411011, 61.03033008588991], [-69.32322330470339, 60.67677669529664], [-68.96966991411011, 60.53033008588991], [-68.75, 60.0], [-68.95710678118655, 59.5], [-68.75, 59.0], [-68.96966991411011, 58.46966991411009], [-69.5, 58.25], [-69.75, 58.35355339059328], [-70.0, 58.25], [-70.25, 58.35355339059328], [-70.5, 58.25], [-71.03033008588989, 58.46966991411009], [-71.25, 59.0], [-71.03033008588989, 59.53033008588991], [-70.67677669529661, 59.67677669529664]]]}, "2020-07-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-70.67677669529661, 59.67677669529664], [-70.64644660940672, 59.75], [-70.75, 60.0], [-70.64644660940672, 60.25], [-70.67677669529661, 60.32322330470336], [-71.03033008588989, 60.46966991411009], [-71.25, 61.0], [-71.03033008588989, 61.53033008588991], [-70.67677669529661, 61.67677669529664], [-70.53033008588989, 62.03033008588991], [-70.0, 62.25], [-69.75, 62.14644660940672], [-69.5, 62.25], [-69.25, 62.14644660940672], [-69.0, 62.25], [-68.46966991411011, 62.03033008588991], [-68.32322330470339, 61.67677669529664], [-68.25, 61.64644660940672], [-68.0, 61.75], [-67.46966991411011, 61.53033008588991], [-67.25, 61.0], [-67.35355339059328, 60.75], [-67.25, 60.5], [-67.46966991411011, 59.96966991411009], [-68.0, 59.75], [-67.46966991411011, 59.53033008588991], [-67.32322330470339, 59.17677669529664], [-66.96966991411011, 59.03033008588991], [-66.75, 58.5], [-66.96966991411011, 57.96966991411009], [-67.5, 57.75], [-67.75, 57.85355339059328], [-67.82322330470339, 57.82322330470336], [-67.85355339059328, 57.75], [-67.82322330470339, 57.67677669529664], [-67.46966991411011, 57.53033008588991], [-67.25, 57.0], [-67.46966991411011, 56.46966991411009], [-68.0, 56.25], [-68.25, 56.35355339059328], [-68.5, 56.25], [-68.75, 56.35355339059328], [-69.0, 56.25], [-69.53033008588989, 56.46966991411009], [-69.67677669529661, 56.82322330470336], [-69.75, 56.85355339059328], [-70.0, 56.75], [-70.53033008588989, 56.96966991411009], [-70.75, 57.5], [-70.64644660940672, 57.75], [-70.75, 58.0], [-70.625, 58.30177669529663], [-71.03033008588989, 58.46966991411009], [-71.25, 59.0], [-71.03033008588989, 59.53033008588991], [-70.67677669529661, 59.67677669529664]], [[-68.0, 59.75], [-68.42677669529667, 59.92677669529666], [-68.32322330470339, 59.67677669529664], [-68.25, 59.64644660940672], [-68.0, 59.75]], [[-68.82322330470339, 60.17677669529664], [-68.57322330470333, 60.07322330470334], [-68.67677669529661, 60.32322330470336], [-68.75, 60.35355339059328], [-68.875, 60.30177669529663], [-68.82322330470339, 60.17677669529664]]]}, "2020-07-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-70.67677669529661, 59.67677669529664], [-70.64644660940672, 59.75], [-70.75, 60.0], [-70.64644660940672, 60.25], [-70.67677669529661, 60.32322330470336], [-71.03033008588989, 60.46966991411009], [-71.25, 61.0], [-71.03033008588989, 61.53033008588991], [-70.67677669529661, 61.67677669529664], [-70.53033008588989, 62.03033008588991], [-70.0, 62.25], [-69.75, 62.14644660940672], [-69.5, 62.25], [-69.25, 62.14644660940672], [-69.0, 62.25], [-68.46966991411011, 62.03033008588991], [-68.32322330470339, 61.67677669529664], [-68.25, 61.64644660940672], [-68.0, 61.75], [-67.46966991411011, 61.53033008588991], [-67.25, 61.0], [-67.35355339059328, 60.75], [-67.25, 60.5], [-67.46966991411011, 59.96966991411009], [-68.0, 59.75], [-67.46966991411011, 59.53033008588991], [-67.32322330470339, 59.17677669529664], [-66.96966991411011, 59.03033008588991], [-66.75, 58.5], [-66.96966991411011, 57.96966991411009], [-67.5, 57.75], [-67.75, 57.85355339059328], [-67.82322330470339, 57.82322330470336], [-67.85355339059328, 57.75], [-67.82322330470339, 57.67677669529664], [-67.46966991411011, 57.53033008588991], [-67.25, 57.0], [-67.46966991411011, 56.46966991411009], [-68.0, 56.25], [-68.25, 56.35355339059328], [-68.5, 56.25], [-68.75, 56.35355339059328], [-69.0, 56.25], [-69.53033008588989, 56.46966991411009], [-69.67677669529661, 56.82322330470336], [-69.75, 56.85355339059328], [-70.0, 56.75], [-70.53033008588989, 56.96966991411009], [-70.75, 57.5], [-70.64644660940672, 57.75], [-70.75, 58.0], [-70.625, 58.30177669529663], [-71.03033008588989, 58.46966991411009], [-71.25, 59.0], [-71.03033008588989, 59.53033008588991], [-70.67677669529661, 59.67677669529664]], [[-68.0, 59.75], [-68.42677669529667, 59.92677669529666], [-68.32322330470339, 59.67677669529664], [-68.25, 59.64644660940672], [-68.0, 59.75]], [[-68.82322330470339, 60.17677669529664], [-68.57322330470333, 60.07322330470334], [-68.67677669529661, 60.32322330470336], [-68.75, 60.35355339059328], [-68.875, 60.30177669529663], [-68.82322330470339, 60.17677669529664]]]}, "2020-07-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-70.67677669529661, 61.67677669529664], [-70.53033008588989, 62.03033008588991], [-70.0, 62.25], [-69.75, 62.14644660940672], [-69.5, 62.25], [-69.25, 62.14644660940672], [-69.0, 62.25], [-68.46966991411011, 62.03033008588991], [-68.32322330470339, 61.67677669529664], [-68.25, 61.64644660940672], [-68.0, 61.75], [-67.46966991411011, 61.53033008588991], [-67.25, 61.0], [-67.35355339059328, 60.75], [-67.25, 60.5], [-67.46966991411011, 59.96966991411009], [-68.0, 59.75], [-67.46966991411011, 59.53033008588991], [-67.32322330470339, 59.17677669529664], [-66.96966991411011, 59.03033008588991], [-66.75, 58.5], [-66.96966991411011, 57.96966991411009], [-67.5, 57.75], [-67.75, 57.85355339059328], [-67.82322330470339, 57.82322330470336], [-67.85355339059328, 57.75], [-67.82322330470339, 57.67677669529664], [-67.46966991411011, 57.53033008588991], [-67.25, 57.0], [-67.46966991411011, 56.46966991411009], [-68.0, 56.25], [-68.25, 56.35355339059328], [-68.5, 56.25], [-68.75, 56.35355339059328], [-69.0, 56.25], [-69.53033008588989, 56.46966991411009], [-69.67677669529661, 56.82322330470336], [-69.75, 56.85355339059328], [-70.0, 56.75], [-70.53033008588989, 56.96966991411009], [-70.75, 57.5], [-70.64644660940672, 57.75], [-70.75, 58.0], [-70.53033008588989, 58.53033008588991], [-70.17677669529661, 58.67677669529664], [-70.14644660940672, 58.75], [-70.17677669529661, 58.82322330470336], [-70.53033008588989, 58.96966991411009], [-70.75, 59.5], [-70.64644660940672, 59.75], [-70.75, 60.0], [-70.625, 60.30177669529663], [-71.03033008588989, 60.46966991411009], [-71.25, 61.0], [-71.03033008588989, 61.53033008588991], [-70.67677669529661, 61.67677669529664]], [[-68.0, 59.75], [-68.42677669529667, 59.92677669529666], [-68.32322330470339, 59.67677669529664], [-68.25, 59.64644660940672], [-68.0, 59.75]], [[-68.82322330470339, 60.17677669529664], [-68.57322330470333, 60.07322330470334], [-68.67677669529661, 60.32322330470336], [-68.75, 60.35355339059328], [-68.875, 60.30177669529663], [-68.82322330470339, 60.17677669529664]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 10.143279569648769}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.996949205232101}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.346343463964331, 12.085125928988191, 14.247797082696138, 12.246741836087892]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.207732698308178, 17.290728529144076, 20.286887840618817, 18.22002355110766]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [4.768946057112738, 4.321050968597955, 6.324523254646716, 4.3350160952657495]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.611429519888304, 6.445110639662971, 10.143279569648769, 6.794437933250947]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5055669450287748, 1.6981643223785645, 2.3390846725717043, 1.7059992052936042]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.590759650434918, 2.664060647843674, 2.7644640440516, 2.2267231673794945]}}