{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:37.120810", "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-Aug-18_to_2022-Aug-21_257.0_57.5"}, "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": 2022080002484}, "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": "August 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 21 2022"}, "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": 77686.45086438062}, "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": 57.5}, "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": 257.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "257.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 251.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 54.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-108.0, 57.75], [-107.5, 57.54], [-107.0, 57.75], [-106.75, 57.65], [-106.5, 57.75], [-106.25, 57.65], [-106.0, 57.75], [-105.47, 57.53], [-105.32, 57.18], [-105.25, 57.15], [-105.18, 57.18], [-105.03, 57.53], [-104.5, 57.75], [-104.25, 57.65], [-104.0, 57.75], [-103.7, 57.62], [-103.53, 58.03], [-103.0, 58.25], [-102.47, 58.03], [-102.25, 57.5], [-102.35, 57.25], [-102.25, 57.0], [-102.35, 56.75], [-102.25, 56.5], [-102.47, 55.97], [-103.0, 55.75], [-103.25, 55.85], [-103.32, 55.82], [-103.37, 55.7], [-102.97, 55.53], [-102.75, 55.0], [-102.97, 54.47], [-103.5, 54.25], [-103.75, 54.35], [-104.0, 54.25], [-104.5, 54.46], [-105.0, 54.25], [-105.53, 54.47], [-105.68, 54.82], [-105.75, 54.85], [-106.0, 54.75], [-106.25, 54.85], [-106.37, 54.8], [-106.25, 54.5], [-106.35, 54.25], [-106.25, 54.0], [-106.47, 53.47], [-107.0, 53.25], [-107.53, 53.47], [-107.68, 53.82], [-108.03, 53.97], [-108.25, 54.5], [-108.15, 54.75], [-108.18, 54.82], [-108.53, 54.97], [-108.68, 55.32], [-108.75, 55.35], [-109.0, 55.25], [-109.53, 55.47], [-109.75, 56.0], [-109.53, 56.53], [-109.18, 56.68], [-109.03, 57.03], [-108.68, 57.18], [-108.53, 57.53], [-108.0, 57.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.North-America", "N.E.North-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-08-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.53, 56.53], [-109.0, 56.75], [-108.47, 56.53], [-108.25, 56.0], [-108.47, 55.47], [-109.0, 55.25], [-109.53, 55.47], [-109.75, 56.0], [-109.53, 56.53]]]]}, "2022-08-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 57.03], [-108.68, 57.18], [-108.53, 57.53], [-108.0, 57.75], [-107.5, 57.54], [-107.0, 57.75], [-106.75, 57.65], [-106.5, 57.75], [-106.25, 57.65], [-106.0, 57.75], [-105.47, 57.53], [-105.32, 57.18], [-105.25, 57.15], [-105.18, 57.18], [-105.03, 57.53], [-104.5, 57.75], [-104.25, 57.65], [-104.0, 57.75], [-103.69999999999999, 57.62], [-103.52999999999997, 58.03], [-103.0, 58.25], [-102.47000000000003, 58.03], [-102.25, 57.5], [-102.35000000000002, 57.25], [-102.25, 57.0], [-102.35000000000002, 56.75], [-102.25, 56.5], [-102.47000000000003, 55.97], [-103.0, 55.75], [-103.25, 55.85], [-103.32, 55.82], [-103.37, 55.7], [-102.97000000000003, 55.53], [-102.75, 55.0], [-102.97000000000003, 54.47], [-103.5, 54.25], [-103.75, 54.35], [-104.0, 54.25], [-104.5, 54.46], [-105.0, 54.25], [-105.53, 54.47], [-105.68, 54.82], [-105.75, 54.85], [-106.0, 54.75], [-106.25, 54.85], [-106.37, 54.8], [-106.25, 54.5], [-106.35, 54.25], [-106.25, 54.0], [-106.47, 53.47], [-107.0, 53.25], [-107.53, 53.47], [-107.68, 53.82], [-108.03, 53.97], [-108.25, 54.5], [-108.15, 54.75], [-108.18, 54.82], [-108.53, 54.97], [-108.68, 55.32], [-108.75, 55.35], [-109.0, 55.25], [-109.53, 55.47], [-109.75, 56.0], [-109.53, 56.53], [-109.18, 56.68], [-109.03, 57.03]]]]}, "2022-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-109.03, 57.03], [-108.68, 57.18], [-108.53, 57.53], [-108.0, 57.75], [-107.5, 57.54], [-107.0, 57.75], [-106.75, 57.65], [-106.5, 57.75], [-106.25, 57.65], [-106.0, 57.75], [-105.47, 57.53], [-105.32, 57.18], [-105.25, 57.15], [-105.18, 57.18], [-105.03, 57.53], [-104.5, 57.75], [-104.25, 57.65], [-104.0, 57.75], [-103.69999999999999, 57.62], [-103.52999999999997, 58.03], [-103.0, 58.25], [-102.47000000000003, 58.03], [-102.25, 57.5], [-102.35000000000002, 57.25], [-102.25, 57.0], [-102.35000000000002, 56.75], [-102.25, 56.5], [-102.47000000000003, 55.97], [-103.0, 55.75], [-103.25, 55.85], [-103.32, 55.82], [-103.37, 55.7], [-102.97000000000003, 55.53], [-102.75, 55.0], [-102.97000000000003, 54.47], [-103.5, 54.25], [-103.75, 54.35], [-104.0, 54.25], [-104.5, 54.46], [-105.0, 54.25], [-105.53, 54.47], [-105.68, 54.82], [-105.75, 54.85], [-106.0, 54.75], [-106.25, 54.85], [-106.37, 54.8], [-106.25, 54.5], [-106.35, 54.25], [-106.25, 54.0], [-106.47, 53.47], [-107.0, 53.25], [-107.53, 53.47], 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22.572660038628783, 19.969422388434168]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.278102482924794, 23.06808180483705, 24.298923517008063, 21.736645663530965]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [5.277875935984298, 5.349483286313658, 7.237106919589679, 4.764817628448199]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [5.277875935984298, 6.877703373861664, 9.91653750177727, 5.629352281522472]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5375273354433283, 1.6559832696684502, 2.2130116404367173, 1.4332221191153869]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.5375273354433283, 2.0824238489733706, 2.9357231080441166, 1.8055358188797814]}}