{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:08:34.706740", "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": "2017-Jul-21_to_2017-Jul-25_200.5_56.0"}, "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": 2017070002616}, "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 21 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "July 25 2017"}, "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": 95030.83946705269}, "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": ["United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Pacific-Ocean", "N.W.North-America"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["North 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": ["Gulf of Alaska", "North Pacific Ocean"]}, "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": 56.0}, "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": 200.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "200.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 197.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 203.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 52.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 57.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-07-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-162.75, 55.0], [-162.53, 55.53], [-162.0, 55.75], [-161.75, 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[-162.18, 54.32], [-162.53, 54.47], [-162.75, 55.0]]]]}, "2017-07-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-162.75, 55.0], [-162.53, 55.53], [-162.0, 55.75], [-161.75, 55.65], [-161.5, 55.75], [-161.25, 55.65], [-161.0, 55.75], [-160.75, 55.65], [-160.68, 55.68], [-160.53, 56.03], [-160.18, 56.18], [-160.03, 56.53], [-159.5, 56.75], [-159.25, 56.65], [-159.0, 56.75], [-158.75, 56.65], [-158.5, 56.75], [-158.25, 56.65], [-158.18, 56.68], [-158.03, 57.03], [-157.68, 57.18], [-157.53, 57.53], [-157.0, 57.75], [-156.47, 57.53], [-156.25, 57.0], [-156.35, 56.75], [-156.25, 56.5], [-156.47, 55.97], [-156.82, 55.82], [-156.85, 55.75], [-156.75, 55.5], [-156.97, 54.97], [-157.32, 54.82], [-157.46, 54.5], [-157.25, 54.0], [-157.35, 53.75], [-157.25, 53.5], [-157.47, 52.97], [-157.82, 52.82], [-157.97, 52.47], [-158.5, 52.25], [-158.75, 52.35], [-159.0, 52.25], [-159.25, 52.35], [-159.5, 52.25], [-159.75, 52.35], [-160.0, 52.25], [-160.25, 52.35], [-160.5, 52.25], [-160.75, 52.35], [-161.0, 52.25], [-161.25, 52.35], [-161.5, 52.25], [-162.03, 52.47], [-162.25, 53.0], [-162.15, 53.25], [-162.25, 53.5], [-162.15, 53.75], [-162.25, 54.0], [-162.15, 54.25], [-162.18, 54.32], [-162.53, 54.47], [-162.75, 55.0]]]]}, "2017-07-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-162.75, 55.0], [-162.53, 55.53], [-162.0, 55.75], [-161.75, 55.65], [-161.5, 55.75], [-161.25, 55.65], [-161.0, 55.75], [-160.75, 55.65], [-160.68, 55.68], [-160.53, 56.03], [-160.18, 56.18], [-160.03, 56.53], [-159.5, 56.75], [-159.25, 56.65], [-159.0, 56.75], [-158.75, 56.65], [-158.5, 56.75], [-158.25, 56.65], [-158.18, 56.68], [-158.03, 57.03], [-157.68, 57.18], [-157.53, 57.53], [-157.0, 57.75], [-156.47, 57.53], [-156.25, 57.0], [-156.35, 56.75], [-156.25, 56.5], [-156.47, 55.97], [-156.82, 55.82], [-156.85, 55.75], [-156.75, 55.5], [-156.97, 54.97], [-157.32, 54.82], [-157.46, 54.5], [-157.25, 54.0], [-157.35, 53.75], [-157.25, 53.5], [-157.47, 52.97], 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56.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.09296730334745}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 1.8244528379232856}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [12.736202383952673, 12.598577849968535, 12.701481752927066, 12.918409115368775, 12.92579017109324]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [13.90573386347154, 15.28502290400985, 14.66312747345063, 13.902201322481119, 13.740377301870353]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.9030541603035107, 1.7212328387022868, 1.7788815661651685, 1.8852272715399472, 2.1344557487842737]}, "anom_evo_maxamp": {"name": "Evolution of 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