{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:19:00.827221", "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-Feb-21_to_2020-Feb-24_273.0_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": 2020020002114}, "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": "February 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 24 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": 79172.75157121077}, "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", "United States"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.North-America", "E.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": []}, "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": 273.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "273.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 269.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 275.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 48.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-87.0, 49.25], [-86.47, 49.03], [-86.25, 48.5], [-86.47, 47.97], [-87.0, 47.75], [-87.53, 47.97], [-87.75, 48.5], [-87.53, 49.03], [-87.0, 49.25]]]]}, "2020-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.03, 48.03], [-90.5, 48.25], [-90.25, 48.15], [-90.18, 48.18], [-90.03, 48.53], [-89.68, 48.68], [-89.53, 49.03], [-89.0, 49.25], [-88.75, 49.15], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97, 48.53], [-84.82, 48.18], [-84.47, 48.03], [-84.25, 47.5], [-84.35, 47.25], [-84.25, 47.0], [-84.47, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-86.0, 46.25], [-86.25, 46.35], [-86.32, 46.32], [-86.47, 45.97], [-87.0, 45.75], [-87.53, 45.97], [-87.68, 46.32], [-87.75, 46.35], [-88.0, 46.25], [-88.53, 46.47], [-88.68, 46.82], [-88.75, 46.85], [-88.82, 46.82], [-88.97, 46.47], [-89.5, 46.25], [-89.75, 46.35], [-90.0, 46.25], [-90.25, 46.35], [-90.5, 46.25], [-91.03, 46.47], [-91.25, 47.0], [-91.15, 47.25], [-91.25, 47.5], [-91.03, 48.03]]]]}, "2020-02-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.03, 48.03], [-90.5, 48.25], [-90.25, 48.15], [-90.18, 48.18], [-90.03, 48.53], [-89.68, 48.68], [-89.53, 49.03], [-89.0, 49.25], [-88.75, 49.15], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97, 48.53], [-84.82, 48.18], [-84.47, 48.03], [-84.25, 47.5], [-84.35, 47.25], [-84.25, 47.0], [-84.47, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-86.0, 46.25], [-86.25, 46.35], [-86.32, 46.32], [-86.47, 45.97], [-87.0, 45.75], [-87.53, 45.97], [-87.68, 46.32], [-87.75, 46.35], [-88.0, 46.25], [-88.53, 46.47], [-88.68, 46.82], [-88.75, 46.85], [-88.82, 46.82], [-88.97, 46.47], [-89.5, 46.25], [-89.75, 46.35], [-90.0, 46.25], [-90.25, 46.35], [-90.5, 46.25], [-91.03, 46.47], [-91.25, 47.0], [-91.15, 47.25], [-91.25, 47.5], [-91.03, 48.03]]]]}, "2020-02-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-91.03, 48.03], [-90.5, 48.25], [-90.25, 48.15], [-90.18, 48.18], [-90.03, 48.53], [-89.68, 48.68], [-89.53, 49.03], [-89.0, 49.25], [-88.75, 49.15], [-88.5, 49.25], [-88.25, 49.15], [-88.0, 49.25], [-87.75, 49.15], [-87.5, 49.25], [-87.25, 49.15], [-87.0, 49.25], [-86.75, 49.15], [-86.5, 49.25], [-85.97, 49.03], [-85.82, 48.68], [-85.75, 48.65], [-85.5, 48.75], [-84.97, 48.53], [-84.82, 48.18], [-84.47, 48.03], [-84.25, 47.5], [-84.35, 47.25], [-84.25, 47.0], [-84.47, 46.47], [-85.0, 46.25], [-85.25, 46.35], [-85.5, 46.25], [-85.75, 46.35], [-86.0, 46.25], [-86.25, 46.35], [-86.32, 46.32], [-86.47, 45.97], [-87.0, 45.75], [-87.53, 45.97], [-87.68, 46.32], [-87.75, 46.35], [-88.0, 46.25], [-88.53, 46.47], [-88.68, 46.82], [-88.75, 46.85], [-88.82, 46.82], [-88.97, 46.47], [-89.5, 46.25], [-89.75, 46.35], [-90.0, 46.25], [-90.25, 46.35], [-90.5, 46.25], [-91.03, 46.47], [-91.25, 47.0], [-91.15, 47.25], [-91.25, 47.5], [-91.03, 48.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 11.645548616146584}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 9.87733623314888}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [-1.6711268949418923, 0.42650372312317586, 0.994709955357223, 1.3012650901309826]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [-1.6711268949418923, 1.0746306561420056, 1.9196779853022576, 1.7425323368452723]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [8.960534964147485, 9.518150918335728, 9.961528051059599, 10.17645607923556]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [8.960534964147485, 11.098548062133261, 11.16638767132713, 11.645548616146584]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4665997279763638, 1.6145692097696005, 1.7032352867473528, 1.734763881200016]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4665997279763638, 1.82477729963268, 1.8626010503618016, 1.9443177198057193]}}