{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:58:37.010471", "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": "2024-Apr-28_to_2024-Apr-30_13.0_41.5"}, "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": 2024040002042}, "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": "April 28 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 30 2024"}, "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": 56176.04875843736}, "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": ["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": 41.5}, "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": 13.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "13.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 11.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 39.0}, "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": [[[[11.5, 42.75], [11.75, 42.65], [12.0, 42.75], [12.25, 42.65], [12.5, 42.75], [12.75, 42.65], [13.0, 42.75], [13.53, 42.53], [13.68, 42.18], [14.03, 42.03], [14.18, 41.68], [14.25, 41.65], [14.5, 41.75], [15.03, 41.53], [15.25, 41.0], [15.13, 40.7], [15.53, 40.53], [15.68, 40.18], [16.03, 40.03], [16.25, 39.5], [16.03, 38.97], [15.68, 38.82], [15.53, 38.47], [15.0, 38.25], [14.47, 38.47], [14.32, 38.82], [13.97, 38.97], [13.82, 39.32], [13.75, 39.35], [13.5, 39.25], [12.97, 39.47], [12.82, 39.82], [12.47, 39.97], [12.25, 40.5], [12.35, 40.75], [12.32, 40.82], [12.25, 40.85], [12.0, 40.75], [11.75, 40.85], [11.5, 40.75], [10.97, 40.97], [10.75, 41.5], [10.85, 41.75], [10.75, 42.0], [10.97, 42.53], [11.5, 42.75]]]]}}, "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": {"2024-04-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 42.0], [10.97, 42.53], [11.5, 42.75], [11.75, 42.65], [12.0, 42.75], [12.25, 42.65], [12.5, 42.75], [12.75, 42.65], [13.0, 42.75], [13.53, 42.53], [13.68, 42.18], [14.03, 42.03], [14.18, 41.68], [14.25, 41.65], [14.5, 41.75], [15.03, 41.53], [15.25, 41.0], [15.13, 40.7], [15.53, 40.53], [15.68, 40.18], [16.03, 40.03], [16.25, 39.5], [16.03, 38.97], [15.68, 38.82], [15.53, 38.47], [15.0, 38.25], [14.47, 38.47], [14.32, 38.82], [13.97, 38.97], [13.82, 39.32], [13.75, 39.35], [13.5, 39.25], [12.97, 39.47], [12.82, 39.82], [12.47, 39.97], [12.25, 40.5], [12.35, 40.75], [12.32, 40.82], [12.25, 40.85], [12.0, 40.75], [11.75, 40.85], [11.5, 40.75], [10.97, 40.97], [10.75, 41.5], [10.85, 41.75], [10.75, 42.0]]]]}, "2024-04-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 42.0], [10.97, 42.53], [11.5, 42.75], [11.75, 42.65], [12.0, 42.75], [12.25, 42.65], [12.5, 42.75], [12.75, 42.65], [13.0, 42.75], [13.53, 42.53], [13.68, 42.18], [14.03, 42.03], [14.18, 41.68], [14.25, 41.65], [14.5, 41.75], [15.03, 41.53], [15.25, 41.0], [15.13, 40.7], [15.53, 40.53], [15.68, 40.18], [16.03, 40.03], [16.25, 39.5], [16.03, 38.97], [15.68, 38.82], [15.53, 38.47], [15.0, 38.25], [14.47, 38.47], [14.32, 38.82], [13.97, 38.97], [13.82, 39.32], [13.75, 39.35], [13.5, 39.25], [12.97, 39.47], [12.82, 39.82], [12.47, 39.97], [12.25, 40.5], [12.35, 40.75], [12.32, 40.82], [12.25, 40.85], [12.0, 40.75], [11.75, 40.85], [11.5, 40.75], [10.97, 40.97], [10.75, 41.5], [10.85, 41.75], [10.75, 42.0]]]]}, "2024-04-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[10.75, 42.0], [10.97, 42.53], [11.5, 42.75], [11.75, 42.65], [12.0, 42.75], [12.25, 42.65], [12.5, 42.75], [12.75, 42.65], [13.0, 42.75], [13.53, 42.53], [13.68, 42.18], [14.03, 42.03], [14.18, 41.68], [14.25, 41.65], [14.5, 41.75], [15.03, 41.53], [15.25, 41.0], [15.13, 40.7], [15.53, 40.53], [15.68, 40.18], [16.03, 40.03], [16.25, 39.5], [16.03, 38.97], [15.68, 38.82], [15.53, 38.47], [15.0, 38.25], [14.47, 38.47], [14.32, 38.82], [13.97, 38.97], [13.82, 39.32], [13.75, 39.35], [13.5, 39.25], [12.97, 39.47], [12.82, 39.82], [12.47, 39.97], [12.25, 40.5], [12.35, 40.75], [12.32, 40.82], [12.25, 40.85], [12.0, 40.75], [11.75, 40.85], [11.5, 40.75], [10.97, 40.97], [10.75, 41.5], [10.85, 41.75], [10.75, 42.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.552076992082675}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.490964456969277}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.92844823774675, 18.818394600349848, 18.73371861403558]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.60217542324807, 19.77586229367506, 19.960444542551556]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [2.0909382073937217, 2.8125841352782053, 2.569371028235904]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [3.461308261282511, 4.552076992082675, 4.311027455962687]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.4565094746542122, 1.9533160520296848, 1.7477901580494573]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.6308618518882623, 2.1521589922619517, 2.0097801603570233]}}