{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:03:06.257682", "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": "2015-May-25_to_2015-May-28_306.0_50.0"}, "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": 2015050002583}, "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": "May 25 2015"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 28 2015"}, "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": 72502.4275421224}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America", "N.Atlantic-Ocean", "N.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": ["Gulf of St. Lawrence", "Labrador Sea", "North Atlantic 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": 50.0}, "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": 306.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "306.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 302.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 308.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 46.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 51.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2015-05-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-56.25, 50.0], [-56.03, 50.53], [-55.5, 50.75], [-55.25, 50.65], [-55.0, 50.75], [-54.75, 50.65], [-54.5, 50.75], [-54.25, 50.65], [-54.0, 50.75], [-53.75, 50.65], [-53.5, 50.75], [-52.97, 50.53], [-52.82, 50.18], [-52.47, 50.03], [-52.32, 49.68], [-51.97, 49.53], [-51.82, 49.18], [-51.47, 49.03], [-51.25, 48.5], [-51.35, 48.25], [-51.25, 48.0], [-51.47, 47.47], [-51.82, 47.32], [-51.97, 46.97], [-52.5, 46.75], [-52.75, 46.85], [-53.0, 46.75], [-53.53, 46.97], [-53.68, 47.32], [-54.03, 47.47], [-54.25, 48.0], [-54.03, 48.53], [-53.62, 48.7], [-53.68, 48.82], [-53.75, 48.85], [-54.0, 48.75], [-54.25, 48.85], [-54.5, 48.75], [-54.75, 48.85], [-55.0, 48.75], [-55.53, 48.97], [-55.68, 49.32], [-56.03, 49.47], [-56.25, 50.0]]]]}, "2015-05-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 51.0], [-57.53, 51.53], [-57.18, 51.68], [-57.03, 52.03], [-56.5, 52.25], [-55.97, 52.03], [-55.82, 51.68], [-55.47, 51.53], [-55.25, 51.0], [-55.37, 50.7], [-55.25, 50.65], [-55.0, 50.75], [-54.75, 50.65], [-54.5, 50.75], [-54.25, 50.65], [-54.0, 50.75], [-53.75, 50.65], [-53.5, 50.75], [-52.97, 50.53], [-52.82, 50.18], [-52.47, 50.03], [-52.32, 49.68], [-51.97, 49.53], [-51.82, 49.18], [-51.47, 49.03], [-51.25, 48.5], [-51.35, 48.25], [-51.25, 48.0], [-51.47, 47.47], [-51.82, 47.32], [-51.97, 46.97], [-52.32, 46.82], [-52.47, 46.47], [-53.0, 46.25], [-53.53, 46.47], [-53.75, 47.0], [-53.65, 47.25], [-53.68, 47.32], [-54.03, 47.47], [-54.18, 47.82], [-54.53, 47.97], [-54.75, 48.5], [-54.62, 48.8], [-54.75, 48.85], [-55.0, 48.75], [-55.5, 48.96], [-56.0, 48.75], [-56.53, 48.97], [-56.68, 49.32], [-56.75, 49.35], [-57.0, 49.25], [-57.25, 49.35], [-57.5, 49.25], [-58.03, 49.47], [-58.25, 50.0], [-58.03, 50.53], [-57.68, 50.68], [-57.65, 50.75], [-57.75, 51.0]]]]}, "2015-05-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 51.0], [-57.53, 51.53], [-57.18, 51.68], [-57.03, 52.03], [-56.5, 52.25], [-55.97, 52.03], [-55.82, 51.68], [-55.47, 51.53], [-55.25, 51.0], [-55.37, 50.7], [-55.25, 50.65], [-55.0, 50.75], [-54.75, 50.65], [-54.5, 50.75], [-54.25, 50.65], [-54.0, 50.75], [-53.75, 50.65], [-53.5, 50.75], [-52.97, 50.53], [-52.82, 50.18], [-52.47, 50.03], [-52.32, 49.68], [-51.97, 49.53], [-51.82, 49.18], [-51.47, 49.03], [-51.25, 48.5], [-51.35, 48.25], [-51.25, 48.0], [-51.47, 47.47], [-51.82, 47.32], [-51.97, 46.97], [-52.32, 46.82], [-52.47, 46.47], [-53.0, 46.25], [-53.53, 46.47], [-53.75, 47.0], [-53.65, 47.25], [-53.68, 47.32], [-54.03, 47.47], [-54.18, 47.82], [-54.53, 47.97], [-54.75, 48.5], [-54.62, 48.8], [-54.75, 48.85], [-55.0, 48.75], [-55.5, 48.96], [-56.0, 48.75], [-56.53, 48.97], [-56.68, 49.32], [-56.75, 49.35], [-57.0, 49.25], [-57.25, 49.35], [-57.5, 49.25], [-58.03, 49.47], [-58.25, 50.0], [-58.03, 50.53], [-57.68, 50.68], [-57.65, 50.75], [-57.75, 51.0]]]]}, "2015-05-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-57.75, 51.0], [-57.53, 51.53], [-57.18, 51.68], [-57.03, 52.03], [-56.5, 52.25], [-55.97, 52.03], [-55.82, 51.68], [-55.47, 51.53], [-55.25, 51.0], [-55.37, 50.7], [-55.25, 50.65], [-55.0, 50.75], [-54.75, 50.65], [-54.5, 50.75], [-54.25, 50.65], [-54.0, 50.75], [-53.75, 50.65], [-53.5, 50.75], [-52.97, 50.53], [-52.82, 50.18], [-52.47, 50.03], [-52.32, 49.68], [-51.97, 49.53], [-51.82, 49.18], [-51.47, 49.03], [-51.25, 48.5], [-51.35, 48.25], [-51.25, 48.0], [-51.47, 47.47], [-51.82, 47.32], [-51.97, 46.97], [-52.32, 46.82], [-52.47, 46.47], [-53.0, 46.25], [-53.53, 46.47], [-53.75, 47.0], [-53.65, 47.25], [-53.68, 47.32], [-54.03, 47.47], [-54.18, 47.82], [-54.53, 47.97], [-54.75, 48.5], [-54.62, 48.8], [-54.75, 48.85], [-55.0, 48.75], [-55.5, 48.96], [-56.0, 48.75], [-56.53, 48.97], [-56.68, 49.32], [-56.75, 49.35], [-57.0, 49.25], [-57.25, 49.35], [-57.5, 49.25], [-58.03, 49.47], [-58.25, 50.0], [-58.03, 50.53], [-57.68, 50.68], [-57.65, 50.75], [-57.75, 51.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 7.549637238633181}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 4.548591600755319}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.200614819485452, 8.943060203267919, 9.340481239582573, 10.38395827327082]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.662669352619673, 14.239376894325403, 13.093205557488034, 14.908076563384498]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [3.433376423595848, 4.283163106411111, 4.552381019099591, 5.429794664066078]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.65574389170871, 6.394774115048051, 5.873472372691879, 7.549637238633181]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.6224416017981838, 1.766864080318087, 1.900930816123069, 2.207664921949256]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8814587083058207, 2.242246893201574, 2.3648498682650763, 2.924816010173881]}}