{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:47:23.161138", "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": "2011-May-10_to_2011-May-12_11.0_30.5"}, "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": 2011050000626}, "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 10 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2011"}, "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": "Cold spell"}, "area": {"name": "Area", "description": "The area (in square meters) encompassing all grid points under the influence of an event during its lifetime.", "value": 127573.90120188374}, "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": ["Algeria", "Libya", "Tunisia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Mediterranean", "Sahara"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Africa"]}, "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": []}, "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": 30.5}, "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": 11.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "11.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 8.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 15.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 29.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 32.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.97, 31.53], [8.5, 31.75], [8.75, 31.65], [9.0, 31.75], [9.25, 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"coordinates": [[[[7.97, 31.53], [8.5, 31.75], [8.75, 31.65], [9.0, 31.75], [9.25, 31.65], [9.5, 31.75], [9.75, 31.65], [9.82, 31.68], [9.97, 32.03], [10.5, 32.25], [10.75, 32.15], [11.0, 32.25], [11.25, 32.15], [11.32, 32.18], [11.47, 32.53], [12.0, 32.75], [12.53, 32.53], [12.68, 32.18], [12.75, 32.15], [13.0, 32.25], [13.25, 32.15], [13.5, 32.25], [13.75, 32.15], [14.0, 32.25], [14.53, 32.03], [14.68, 31.68], [14.75, 31.65], [15.0, 31.75], [15.53, 31.53], [15.75, 31.0], [15.65, 30.75], [15.75, 30.5], [15.65, 30.25], [15.75, 30.0], [15.53, 29.47], [15.0, 29.25], [14.75, 29.35], [14.5, 29.25], [14.25, 29.35], [14.0, 29.25], [13.47, 29.47], [13.32, 29.82], [13.0, 29.96], [12.68, 29.82], [12.53, 29.47], [12.0, 29.25], [11.75, 29.35], [11.5, 29.25], [11.25, 29.35], [11.0, 29.25], [10.75, 29.35], [10.68, 29.32], [10.53, 28.97], [10.0, 28.75], [9.75, 28.85], [9.5, 28.75], [8.97, 28.97], [8.82, 29.32], [8.47, 29.47], [8.32, 29.82], [7.97, 29.97], [7.75, 30.5], [7.85, 30.75], [7.75, 31.0], [7.97, 31.53]]]]}, "2011-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[7.97, 31.53], [8.5, 31.75], [8.75, 31.65], [9.0, 31.75], [9.25, 31.65], [9.5, 31.75], [9.75, 31.65], [9.82, 31.68], [9.97, 32.03], [10.5, 32.25], [10.75, 32.15], [11.0, 32.25], [11.25, 32.15], [11.32, 32.18], [11.47, 32.53], [12.0, 32.75], [12.53, 32.53], [12.68, 32.18], [12.75, 32.15], [13.0, 32.25], [13.25, 32.15], [13.5, 32.25], [13.75, 32.15], [14.0, 32.25], [14.53, 32.03], [14.68, 31.68], [14.75, 31.65], [15.0, 31.75], [15.53, 31.53], [15.75, 31.0], [15.65, 30.75], [15.75, 30.5], [15.65, 30.25], [15.75, 30.0], [15.53, 29.47], [15.0, 29.25], [14.75, 29.35], [14.5, 29.25], [14.25, 29.35], [14.0, 29.25], [13.47, 29.47], [13.32, 29.82], [13.0, 29.96], [12.68, 29.82], [12.53, 29.47], [12.0, 29.25], [11.75, 29.35], [11.5, 29.25], [11.25, 29.35], [11.0, 29.25], [10.75, 29.35], [10.68, 29.32], [10.53, 28.97], [10.0, 28.75], [9.75, 28.85], [9.5, 28.75], [8.97, 28.97], [8.82, 29.32], [8.47, 29.47], [8.32, 29.82], [7.97, 29.97], [7.75, 30.5], [7.85, 30.75], [7.75, 31.0], [7.97, 31.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -8.81010505746218}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.2793737988931575}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.93701357017295, 17.882119986094096, 19.9079239105655]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [15.522089682125568, 15.853936207012737, 17.182608533402004]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-6.024221310849267, -7.339782068558496, -5.474118017271703]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-7.444723517865668, -8.81010505746218, -6.121001702020408]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5730805121961542, -1.9109759068322019, -1.4067795734689355]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9126577151012654, -2.363234242175937, -1.6549214537162256]}}