{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:23:05.398472", "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": "2021-Jan-20_to_2021-Jan-24_13.0_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": 2021010002240}, "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": "January 20 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 24 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 54872.288801729606}, "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"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean"]}, "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": 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": 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": 12.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 38.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 41.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.0, 40.75], [13.53, 40.53], [13.75, 40.0], [13.53, 39.47], [13.0, 39.25], [12.47, 39.47], [12.25, 40.0], [12.47, 40.53], [13.0, 40.75]]]]}, "2021-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, 40.53], [12.5, 40.75], [12.75, 40.65], [13.0, 40.75], [13.25, 40.65], [13.32, 40.68], [13.35, 40.75], [13.25, 41.0], [13.47, 41.53], [14.0, 41.75], [14.53, 41.53], [14.75, 41.0], [14.65, 40.75], [14.68, 40.68], [14.75, 40.65], [15.0, 40.75], [15.53, 40.53], [15.75, 40.0], [15.65, 39.75], [15.68, 39.68], [16.03, 39.53], [16.25, 39.0], [16.15, 38.75], [16.25, 38.5], [16.03, 37.97], [15.5, 37.75], [15.25, 37.85], [15.0, 37.75], [14.75, 37.85], [14.5, 37.75], [13.97, 37.97], [13.82, 38.32], [13.75, 38.35], [13.5, 38.25], [13.25, 38.35], [13.0, 38.25], [12.47, 38.47], [12.32, 38.82], [11.97, 38.97], [11.75, 39.5], [11.85, 39.75], [11.75, 40.0], [11.97, 40.53]]]]}, "2021-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, 40.53], [12.5, 40.75], [12.75, 40.65], [13.0, 40.75], [13.25, 40.65], [13.32, 40.68], [13.35, 40.75], [13.25, 41.0], [13.47, 41.53], [14.0, 41.75], [14.53, 41.53], [14.75, 41.0], [14.65, 40.75], [14.68, 40.68], [14.75, 40.65], [15.0, 40.75], [15.53, 40.53], [15.75, 40.0], [15.65, 39.75], [15.68, 39.68], [16.03, 39.53], [16.25, 39.0], [16.15, 38.75], [16.25, 38.5], [16.03, 37.97], [15.5, 37.75], [15.25, 37.85], [15.0, 37.75], [14.75, 37.85], [14.5, 37.75], [13.97, 37.97], [13.82, 38.32], [13.75, 38.35], [13.5, 38.25], [13.25, 38.35], [13.0, 38.25], [12.47, 38.47], [12.32, 38.82], [11.97, 38.97], [11.75, 39.5], [11.85, 39.75], [11.75, 40.0], [11.97, 40.53]]]]}, "2021-01-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[11.97, 40.53], [12.5, 40.75], [12.75, 40.65], [13.0, 40.75], [13.25, 40.65], [13.32, 40.68], [13.35, 40.75], [13.25, 41.0], [13.47, 41.53], [14.0, 41.75], [14.53, 41.53], [14.75, 41.0], [14.65, 40.75], [14.68, 40.68], [14.75, 40.65], [15.0, 40.75], [15.53, 40.53], [15.75, 40.0], [15.65, 39.75], [15.68, 39.68], [16.03, 39.53], [16.25, 39.0], [16.15, 38.75], [16.25, 38.5], [16.03, 37.97], [15.5, 37.75], [15.25, 37.85], [15.0, 37.75], [14.75, 37.85], [14.5, 37.75], [13.97, 37.97], [13.82, 38.32], [13.75, 38.35], [13.5, 38.25], [13.25, 38.35], [13.0, 38.25], [12.47, 38.47], [12.32, 38.82], [11.97, 38.97], [11.75, 39.5], [11.85, 39.75], [11.75, 40.0], [11.97, 40.53]]]]}, "2021-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[13.97, 40.53], [14.5, 40.75], [14.75, 40.65], [15.0, 40.75], [15.53, 40.53], [15.75, 40.0], [15.53, 39.47], [15.18, 39.32], [15.13, 39.2], [15.25, 39.15], [15.5, 39.25], [16.03, 39.03], [16.25, 38.5], [16.03, 37.97], [15.5, 37.75], [15.25, 37.85], [15.0, 37.75], [14.75, 37.85], [14.5, 37.75], [13.97, 37.97], [13.75, 38.5], [13.96, 39.0], [13.75, 39.5], [13.85, 39.75], [13.75, 40.0], [13.97, 40.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": 4.390303005307032}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": 2.2723558335948755}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.272321956963765, 14.837064646464569, 14.990284812840628, 14.306511234535549, 14.327432785541362]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.272321956963765, 15.266588773101603, 15.24490243830843, 14.749559013428723, 14.710110537757316]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [1.7574345968340026, 2.4091651312012665, 2.592572761204085, 1.9354717229885054, 1.8976312670529676]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [1.7574345968340026, 4.12703168109789, 4.390303005307032, 2.846398385379757, 2.192268269785245]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [1.1567603215440525, 1.536825472569497, 1.653660982482602, 1.2239041035471596, 1.1776116114515398]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [1.1567603215440525, 2.010396365771184, 2.1423616064493407, 1.3836179858851654, 1.2477043038581876]}}