{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:56:21.661230", "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-Nov-19_to_2023-Nov-24_15.5_40.0"}, "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": 2023110001738}, "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": "November 19 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 24 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 149279.50870996268}, "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": ["Italy"]}, "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": ["Adriatic Sea", "Ionian Sea", "Tyrrhenian Basin", "Tyrrhenian Sea"]}, "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": 40.0}, "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": 15.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "15.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 10.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 42.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[17.75, 38.0], [17.53, 37.47], [17.0, 37.25], [16.5, 37.46], [16.0, 37.25], [15.47, 37.47], [15.25, 38.0], [15.47, 38.53], [15.82, 38.68], [15.97, 39.03], [16.5, 39.25], [16.25, 39.35], [16.0, 39.25], [15.75, 39.35], [15.5, 39.25], [15.2, 39.38], [15.03, 38.97], [14.5, 38.75], [14.0, 38.96], [13.5, 38.75], [13.25, 38.85], [13.0, 38.75], [12.75, 38.85], [12.5, 38.75], [12.25, 38.85], [12.18, 38.82], [12.15, 38.75], [12.25, 38.5], [12.03, 37.97], [11.5, 37.75], [11.25, 37.85], [11.0, 37.75], [10.47, 37.97], [10.32, 38.32], [9.97, 38.47], [9.75, 39.0], [9.85, 39.25], [9.82, 39.32], [9.47, 39.47], [9.25, 40.0], [9.47, 40.53], [10.0, 40.75], [10.25, 40.65], [10.5, 40.75], [10.75, 40.65], [11.0, 40.75], [11.25, 40.65], [11.32, 40.68], [11.46, 41.0], [11.25, 41.5], [11.47, 42.03], [12.0, 42.25], [12.25, 42.15], [12.5, 42.25], [13.03, 42.03], [13.18, 41.68], [13.3, 41.63], [13.47, 42.03], [14.0, 42.25], [14.53, 42.03], [14.68, 41.68], [15.03, 41.53], [15.18, 41.18], [15.25, 41.15], [15.5, 41.25], [15.75, 41.15], [15.88, 41.2], [15.75, 41.5], [15.97, 42.03], [16.5, 42.25], [16.75, 42.15], [16.82, 42.18], [16.97, 42.53], [17.5, 42.75], [18.03, 42.53], [18.25, 42.0], [18.15, 41.75], [18.18, 41.68], [18.5, 41.54], [19.0, 41.75], [19.53, 41.53], [19.75, 41.0], [19.65, 40.75], [19.75, 40.5], [19.54, 40.0], [19.75, 39.5], [19.65, 39.25], [19.75, 39.0], [19.65, 38.75], [19.75, 38.5], [19.53, 37.97], [19.0, 37.75], [18.47, 37.97], [18.32, 38.32], [18.25, 38.35], [18.0, 38.25], [17.75, 38.35], [17.68, 38.32], [17.65, 38.25], [17.75, 38.0]], [[16.75, 39.15], [16.82, 39.18], [16.85, 39.25], [16.82, 39.32], [16.75, 39.35], [16.5, 39.25], [16.75, 39.15]], [[16.87, 40.7], [16.82, 40.82], [16.75, 40.85], [16.63, 40.8], [16.68, 40.68], [16.75, 40.65], [16.87, 40.7]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 39.47], [9.25, 40.0], [9.47, 40.53], [10.0, 40.75], [10.25, 40.65], [10.5, 40.75], [10.75, 40.65], [11.0, 40.75], [11.25, 40.65], [11.32, 40.68], [11.46, 41.0], [11.25, 41.5], [11.47, 42.03], [12.0, 42.25], [12.25, 42.15], [12.5, 42.25], [13.03, 42.03], [13.18, 41.68], [13.53, 41.53], [13.68, 41.18], [13.75, 41.15], [14.0, 41.25], [14.53, 41.03], [14.68, 40.68], [15.03, 40.53], [15.25, 40.0], [15.15, 39.75], [15.25, 39.5], [15.03, 38.97], [14.5, 38.75], [14.0, 38.96], [13.5, 38.75], [13.25, 38.85], [13.0, 38.75], [12.75, 38.85], [12.5, 38.75], [12.25, 38.85], [12.18, 38.82], [12.15, 38.75], [12.25, 38.5], [12.03, 37.97], [11.5, 37.75], [11.25, 37.85], [11.0, 37.75], [10.47, 37.97], [10.32, 38.32], [9.97, 38.47], [9.75, 39.0], [9.85, 39.25], [9.82, 39.32], [9.47, 39.47]]]]}, "2023-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[17.0, 39.25], [17.53, 39.03], [17.75, 38.5], [17.65, 38.25], [17.75, 38.0], [17.53, 37.47], [17.0, 37.25], [16.5, 37.46], [16.0, 37.25], [15.47, 37.47], [15.25, 38.0], [15.47, 38.53], [15.82, 38.68], [15.97, 39.03], [16.5, 39.25], [16.75, 39.15], [17.0, 39.25]]], [[[9.25, 40.0], [9.47, 40.53], [10.0, 40.75], [10.25, 40.65], [10.5, 40.75], [10.75, 40.65], [11.0, 40.75], [11.25, 40.65], [11.32, 40.68], [11.46, 41.0], [11.25, 41.5], [11.47, 42.03], [12.0, 42.25], [12.25, 42.15], [12.5, 42.25], [13.03, 42.03], [13.18, 41.68], [13.53, 41.53], [13.68, 41.18], [13.75, 41.15], [13.82, 41.18], [13.97, 41.53], [14.5, 41.75], [15.03, 41.53], [15.18, 41.18], [15.25, 41.15], [15.5, 41.25], [15.75, 41.15], [16.0, 41.25], [16.53, 41.03], [16.68, 40.68], [16.75, 40.65], [17.0, 40.75], [17.53, 40.53], [17.75, 40.0], [17.53, 39.47], [17.0, 39.25], [16.75, 39.35], [16.5, 39.25], [16.25, 39.35], [16.0, 39.25], [15.75, 39.35], [15.5, 39.25], [15.2, 39.38], [15.03, 38.97], [14.5, 38.75], [14.0, 38.96], [13.5, 38.75], [13.25, 38.85], [13.0, 38.75], [12.75, 38.85], [12.5, 38.75], [12.25, 38.85], [12.18, 38.82], [12.15, 38.75], [12.25, 38.5], [12.03, 37.97], [11.5, 37.75], [11.25, 37.85], [11.0, 37.75], [10.47, 37.97], [10.32, 38.32], [9.97, 38.47], [9.75, 39.0], [9.85, 39.25], [9.82, 39.32], [9.47, 39.47], [9.25, 40.0]]]]}, "2023-11-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[9.47, 39.47], [9.25, 40.0], [9.47, 40.53], [10.0, 40.75], [10.25, 40.65], [10.5, 40.75], [10.75, 40.65], [11.0, 40.75], [11.25, 40.65], [11.32, 40.68], [11.46, 41.0], [11.25, 41.5], [11.47, 42.03], [12.0, 42.25], [12.25, 42.15], [12.5, 42.25], [13.03, 42.03], [13.18, 41.68], [13.3, 41.63], [13.47, 42.03], [14.0, 42.25], [14.53, 42.03], [14.68, 41.68], [15.03, 41.53], [15.18, 41.18], [15.25, 41.15], [15.5, 41.25], [15.75, 41.15], [15.88, 41.2], [15.75, 41.5], [15.97, 42.03], [16.5, 42.25], [16.75, 42.15], [16.82, 42.18], [16.97, 42.53], [17.5, 42.75], [18.03, 42.53], [18.25, 42.0], [18.15, 41.75], [18.18, 41.68], [18.5, 41.54], [19.0, 41.75], [19.53, 41.53], [19.75, 41.0], [19.65, 40.75], [19.75, 40.5], [19.54, 40.0], [19.75, 39.5], [19.65, 39.25], [19.75, 39.0], [19.65, 38.75], [19.75, 38.5], [19.53, 37.97], [19.0, 37.75], [18.47, 37.97], [18.32, 38.32], [18.25, 38.35], [18.0, 38.25], [17.75, 38.35], [17.68, 38.32], [17.65, 38.25], [17.75, 38.0], [17.53, 37.47], [17.0, 37.25], [16.5, 37.46], [16.0, 37.25], [15.47, 37.47], [15.25, 38.0], [15.47, 38.53], [15.82, 38.68], [15.97, 39.03], [16.5, 39.25], [16.25, 39.35], [16.0, 39.25], [15.75, 39.35], [15.5, 39.25], [15.2, 39.38], [15.03, 38.97], [14.5, 38.75], [14.0, 38.96], [13.5, 38.75], [13.25, 38.85], [13.0, 38.75], [12.75, 38.85], [12.5, 38.75], [12.25, 38.85], [12.18, 38.82], [12.15, 38.75], [12.25, 38.5], [12.03, 37.97], [11.5, 37.75], [11.25, 37.85], [11.0, 37.75], [10.47, 37.97], [10.32, 38.32], [9.97, 38.47], [9.75, 39.0], [9.85, 39.25], [9.82, 39.32], [9.47, 39.47]], [[16.75, 39.15], [16.82, 39.18], [16.85, 39.25], [16.82, 39.32], [16.75, 39.35], [16.5, 39.25], [16.75, 39.15]], [[16.88, 40.7], [16.82, 40.82], [16.75, 40.85], [16.63, 40.8], [16.68, 40.68], [16.75, 40.65], [16.88, 40.7]]]]}, "2023-11-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.47, 40.97], [13.25, 41.5], [13.47, 42.03], [14.0, 42.25], [14.53, 42.03], [14.68, 41.68], [15.03, 41.53], [15.18, 41.18], [15.25, 41.15], [15.5, 41.25], [15.75, 41.15], [15.88, 41.2], [15.75, 41.5], [15.97, 42.03], [16.5, 42.25], [16.75, 42.15], [16.82, 42.18], [16.97, 42.53], [17.5, 42.75], [18.03, 42.53], [18.25, 42.0], [18.15, 41.75], [18.18, 41.68], [18.5, 41.54], [19.0, 41.75], [19.53, 41.53], [19.75, 41.0], [19.65, 40.75], [19.75, 40.5], [19.54, 40.0], [19.75, 39.5], [19.65, 39.25], [19.75, 39.0], [19.65, 38.75], [19.75, 38.5], [19.53, 37.97], [19.0, 37.75], [18.47, 37.97], [18.32, 38.32], [18.25, 38.35], [18.0, 38.25], [17.75, 38.35], [17.68, 38.32], [17.65, 38.25], [17.75, 38.0], [17.53, 37.47], [17.0, 37.25], [16.5, 37.46], [16.0, 37.25], [15.47, 37.47], [15.25, 38.0], [15.47, 38.53], [15.82, 38.68], [15.97, 39.03], [16.5, 39.25], [16.25, 39.35], [16.0, 39.25], [15.75, 39.35], [15.5, 39.25], [14.97, 39.47], [14.82, 39.82], [14.47, 39.97], [14.32, 40.32], [13.97, 40.47], [13.82, 40.82], [13.47, 40.97]], [[16.75, 39.15], [16.82, 39.18], [16.85, 39.25], [16.82, 39.32], [16.75, 39.35], [16.5, 39.25], [16.75, 39.15]], [[16.75, 40.65], [16.88, 40.7], [16.82, 40.82], [16.75, 40.85], [16.63, 40.8], [16.68, 40.68], [16.75, 40.65]]]]}, "2023-11-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.47, 40.97], [13.25, 41.5], [13.47, 42.03], [14.0, 42.25], [14.53, 42.03], [14.68, 41.68], [15.03, 41.53], [15.18, 41.18], [15.25, 41.15], [15.5, 41.25], [15.75, 41.15], [15.88, 41.2], [15.75, 41.5], [15.97, 42.03], [16.5, 42.25], [16.75, 42.15], [16.82, 42.18], [16.97, 42.53], [17.5, 42.75], [18.03, 42.53], [18.25, 42.0], [18.15, 41.75], [18.18, 41.68], [18.5, 41.54], [19.0, 41.75], [19.53, 41.53], [19.75, 41.0], [19.65, 40.75], [19.75, 40.5], [19.54, 40.0], [19.75, 39.5], [19.65, 39.25], [19.75, 39.0], [19.65, 38.75], [19.75, 38.5], [19.53, 37.97], [19.0, 37.75], [18.47, 37.97], [18.32, 38.32], [18.25, 38.35], [18.0, 38.25], [17.75, 38.35], [17.63, 38.3], [17.75, 38.0], [17.53, 37.47], [17.0, 37.25], [16.47, 37.47], [16.25, 38.0], [16.47, 38.53], [16.88, 38.7], [16.75, 39.0], [16.85, 39.25], [16.8, 39.38], [16.5, 39.25], [16.25, 39.35], [16.0, 39.25], [15.75, 39.35], [15.5, 39.25], [14.97, 39.47], [14.82, 39.82], [14.47, 39.97], [14.32, 40.32], [13.97, 40.47], [13.82, 40.82], [13.47, 40.97]], [[16.93, 40.57], [16.82, 40.82], [16.75, 40.85], [16.63, 40.8], [16.68, 40.68], [16.93, 40.57]]]]}, "2023-11-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[19.0, 41.75], [19.53, 41.53], [19.75, 41.0], [19.53, 40.47], [19.0, 40.25], [18.47, 40.47], [18.25, 41.0], [18.47, 41.53], [19.0, 41.75]]], [[[15.97, 40.97], [15.75, 41.5], [15.97, 42.03], [16.5, 42.25], [16.75, 42.15], [17.0, 42.25], [17.25, 42.15], [17.5, 42.25], [18.03, 42.03], [18.25, 41.5], [18.15, 41.25], [18.25, 41.0], [18.03, 40.47], [17.5, 40.25], [16.97, 40.47], [16.82, 40.82], [16.75, 40.85], [16.5, 40.75], [15.97, 40.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 5.335742664570944}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.8722983623998783}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.654696699013925, 18.149377483713295, 18.019270878518682, 16.735564420660012, 16.849352457449186, 16.897377672216294]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.123319546942582, 19.69083538792654, 20.511020201016095, 18.912303728985478, 18.8639431426069, 17.085199189521973]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.30896913314612, 3.082047462493743, 3.0433536159462182, 2.7288237043609294, 3.0078770601463645, 2.426524564804015]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [2.733080709201886, 4.459000838067311, 4.987458503601431, 4.165228837672544, 5.335742664570944, 2.5915133332866844]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.2180256997975798, 1.4653182886162814, 1.4166969608177469, 1.2080523626967958, 1.3079649179929735, 1.196185060081936]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.4456693873375221, 1.7671333771470015, 2.0437603947996723, 1.4573691588395337, 1.8947405470215908, 1.288446775696901]}}