{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:11.060654", "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": "2023-Mar-29_to_2023-Mar-31_354.0_54.0"}, "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": 2023030002640}, "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": "March 29 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 31 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 54555.37108050486}, "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 Kingdom"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Europe"]}, "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": ["Irish Sea", "Scotch Corner233", "Sea of the Hebrides"]}, "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": 54.0}, "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": 354.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "354.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 353.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 356.5}, "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": [[[[-7.25, 55.5], [-7.15, 55.75], [-7.25, 56.0], [-7.15, 56.25], [-7.25, 56.5], [-7.15, 56.75], [-7.25, 57.0], [-7.03, 57.53], [-6.68, 57.68], [-6.53, 58.03], [-6.0, 58.25], [-5.47, 58.03], [-5.32, 57.68], [-4.97, 57.53], [-4.75, 57.0], [-4.96, 56.5], [-4.82, 56.18], [-4.75, 56.15], [-4.5, 56.25], [-3.97, 56.03], [-3.82, 55.68], [-3.47, 55.53], [-3.32, 55.18], [-2.97, 55.03], [-2.75, 54.5], [-2.85, 54.25], [-2.75, 54.0], [-2.97, 53.47], [-3.5, 53.25], [-3.75, 53.35], [-4.0, 53.25], [-4.25, 53.35], [-4.5, 53.25], [-4.75, 53.35], [-5.0, 53.25], [-5.5, 53.46], [-6.0, 53.25], [-6.53, 53.47], [-6.68, 53.82], [-7.03, 53.97], [-7.25, 54.5], [-7.15, 54.75], [-7.25, 55.0], [-7.15, 55.25], [-7.25, 55.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Europe"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.25, 55.0], [-7.149999999999977, 55.25], [-7.25, 55.5], [-7.149999999999977, 55.75], [-7.25, 56.0], [-7.149999999999977, 56.25], [-7.25, 56.5], [-7.149999999999977, 56.75], [-7.25, 57.0], [-7.029999999999973, 57.53], [-6.680000000000007, 57.68], [-6.529999999999973, 58.03], [-6.0, 58.25], [-5.470000000000027, 58.03], [-5.319999999999993, 57.68], [-4.970000000000027, 57.53], [-4.75, 57.0], [-4.9599999999999795, 56.5], [-4.819999999999993, 56.18], [-4.75, 56.15], [-4.5, 56.25], [-3.9700000000000273, 56.03], [-3.819999999999993, 55.68], [-3.4700000000000273, 55.53], [-3.319999999999993, 55.18], [-2.9700000000000273, 55.03], [-2.75, 54.5], [-2.8500000000000227, 54.25], [-2.75, 54.0], [-2.9700000000000273, 53.47], [-3.5, 53.25], [-3.75, 53.35], [-4.0, 53.25], [-4.25, 53.35], [-4.5, 53.25], [-4.75, 53.35], [-5.0, 53.25], [-5.5, 53.46], [-6.0, 53.25], [-6.529999999999973, 53.47], [-6.680000000000007, 53.82], [-7.029999999999973, 53.97], [-7.25, 54.5], [-7.149999999999977, 54.75], [-7.25, 55.0]]]]}, "2023-03-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.25, 55.0], [-7.149999999999977, 55.25], [-7.25, 55.5], [-7.149999999999977, 55.75], [-7.25, 56.0], [-7.149999999999977, 56.25], [-7.25, 56.5], [-7.149999999999977, 56.75], [-7.25, 57.0], [-7.029999999999973, 57.53], [-6.680000000000007, 57.68], [-6.529999999999973, 58.03], [-6.0, 58.25], [-5.470000000000027, 58.03], [-5.319999999999993, 57.68], [-4.970000000000027, 57.53], [-4.75, 57.0], [-4.9599999999999795, 56.5], [-4.819999999999993, 56.18], [-4.75, 56.15], [-4.5, 56.25], [-3.9700000000000273, 56.03], [-3.819999999999993, 55.68], [-3.4700000000000273, 55.53], [-3.319999999999993, 55.18], [-2.9700000000000273, 55.03], [-2.75, 54.5], [-2.8500000000000227, 54.25], [-2.75, 54.0], [-2.9700000000000273, 53.47], [-3.5, 53.25], [-3.75, 53.35], [-4.0, 53.25], [-4.25, 53.35], [-4.5, 53.25], [-4.75, 53.35], [-5.0, 53.25], [-5.5, 53.46], [-6.0, 53.25], [-6.529999999999973, 53.47], [-6.680000000000007, 53.82], [-7.029999999999973, 53.97], [-7.25, 54.5], [-7.149999999999977, 54.75], [-7.25, 55.0]]]]}, "2023-03-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-7.25, 55.0], [-7.149999999999977, 55.25], [-7.25, 55.5], [-7.149999999999977, 55.75], [-7.25, 56.0], [-7.149999999999977, 56.25], [-7.25, 56.5], [-7.149999999999977, 56.75], [-7.25, 57.0], [-7.029999999999973, 57.53], [-6.680000000000007, 57.68], [-6.529999999999973, 58.03], [-6.0, 58.25], [-5.470000000000027, 58.03], [-5.319999999999993, 57.68], [-4.970000000000027, 57.53], [-4.75, 57.0], [-4.9599999999999795, 56.5], [-4.819999999999993, 56.18], [-4.75, 56.15], [-4.5, 56.25], [-3.9700000000000273, 56.03], [-3.819999999999993, 55.68], [-3.4700000000000273, 55.53], [-3.319999999999993, 55.18], [-2.9700000000000273, 55.03], [-2.75, 54.5], [-2.8500000000000227, 54.25], [-2.75, 54.0], [-2.9700000000000273, 53.47], [-3.5, 53.25], [-3.75, 53.35], [-4.0, 53.25], [-4.25, 53.35], [-4.5, 53.25], [-4.75, 53.35], [-5.0, 53.25], [-5.5, 53.46], [-6.0, 53.25], [-6.529999999999973, 53.47], [-6.680000000000007, 53.82], [-7.029999999999973, 53.97], [-7.25, 54.5], [-7.149999999999977, 54.75], [-7.25, 55.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.048440870196089}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.5043757827933875}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.717725277879538, 9.507851681114289, 9.37645295276576]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.411003991460348, 10.824510699562893, 10.499662085317198]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.721882790497487, 2.480867124200175, 2.3103774336825005]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [4.048440870196089, 3.444634486457687, 3.543748024029867]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.5347228823773302, 1.3832755951821878, 1.2985135867360251]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.8311750622439187, 1.5555724715247692, 1.59295320471008]}}