{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:20.088355", "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": "2012-May-09_to_2012-May-12_16.5_-16.5"}, "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": 2012050000566}, "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 09 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 12 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 62054.64309590852}, "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": ["Angola", "Namibia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.Southern-Africa"]}, "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": -16.5}, "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": 16.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "16.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 14.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 19.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -19.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.47, -18.03], [14.25, -17.5], [14.47, -16.97], [15.0, -16.75], [15.25, -16.85], [15.32, -16.82], [15.35, -16.75], [15.25, -16.5], [15.47, -15.97], [15.82, -15.82], [15.97, -15.47], [16.5, -15.25], [16.75, -15.35], [17.0, -15.25], [17.53, -15.47], [17.68, -15.82], [17.75, -15.85], [18.0, -15.75], [18.25, -15.85], [18.32, -15.82], [18.47, -15.47], [19.0, -15.25], [19.53, -15.47], [19.75, -16.0], [19.53, -16.53], [19.18, -16.68], [19.03, -17.03], [18.5, -17.25], [18.25, -17.15], [18.18, -17.18], [18.03, -17.53], [17.68, -17.68], [17.53, -18.03], [17.18, -18.18], [17.03, -18.53], [16.68, -18.68], [16.53, -19.03], [16.0, -19.25], [15.47, -19.03], [15.25, -18.5], [15.38, -18.2], [15.25, -18.15], [15.0, -18.25], [14.47, -18.03]]]]}, "2012-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.47, -18.03], [14.25, -17.5], [14.47, -16.97], [15.0, -16.75], [15.25, -16.85], [15.32, -16.82], [15.35, -16.75], [15.25, -16.5], [15.47, -15.97], [15.82, -15.82], [15.97, -15.47], [16.5, -15.25], [16.75, -15.35], [17.0, -15.25], [17.53, -15.47], [17.68, -15.82], [17.75, -15.85], [18.0, -15.75], [18.25, -15.85], [18.32, -15.82], [18.47, -15.47], [19.0, -15.25], [19.53, -15.47], [19.75, -16.0], [19.53, -16.53], [19.18, -16.68], [19.03, -17.03], [18.5, -17.25], [18.25, -17.15], [18.18, -17.18], [18.03, -17.53], [17.68, -17.68], [17.53, -18.03], [17.18, -18.18], [17.03, -18.53], [16.68, -18.68], [16.53, -19.03], [16.18, -19.18], [16.03, -19.53], [15.5, -19.75], [14.97, -19.53], [14.75, -19.0], [14.97, -18.47], [15.32, -18.32], [15.38, -18.2], [15.25, -18.15], [15.0, -18.25], [14.47, -18.03]]]]}, "2012-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[14.47, -18.03], [14.25, -17.5], [14.47, -16.97], [15.0, -16.75], [15.25, -16.85], [15.32, -16.82], [15.35, -16.75], [15.25, -16.5], [15.47, -15.97], [15.82, -15.82], [15.97, -15.47], [16.5, -15.25], [16.75, -15.35], [17.0, -15.25], [17.53, -15.47], [17.68, -15.82], [17.75, -15.85], [18.0, -15.75], [18.25, -15.85], [18.32, -15.82], [18.47, -15.47], [19.0, -15.25], [19.53, -15.47], [19.75, -16.0], [19.53, -16.53], [19.18, -16.68], [19.03, -17.03], [18.5, -17.25], [18.25, -17.15], [18.18, -17.18], [18.03, -17.53], [17.68, -17.68], [17.53, -18.03], [17.18, -18.18], [17.03, -18.53], [16.68, -18.68], [16.53, -19.03], [16.18, -19.18], [16.03, -19.53], [15.5, -19.75], [14.97, -19.53], [14.75, -19.0], [14.97, -18.47], [15.32, -18.32], [15.38, -18.2], [15.25, -18.15], [15.0, -18.25], [14.47, -18.03]]]]}, "2012-05-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[15.5, -18.25], [16.03, -18.47], [16.25, -19.0], [16.03, -19.53], [15.5, -19.75], [14.97, -19.53], [14.75, -19.0], [14.97, -18.47], [15.5, -18.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.1371135449181224}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.703258095948014}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [19.519302344607922, 19.27919817314148, 19.20938053553175, 19.510720099283446]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.569685132319535, 18.454746498167424, 18.460368933101506, 19.510720099283446]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6655099667288598, -2.769993817317868, -2.6731645656784027, -2.688734667226015]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.021204903130638, -3.1371135449181224, -3.125621674866693, -2.688734667226015]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5566659111627743, -1.5975032527970332, -1.5156468144721762, -1.4920478184535488]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8242003787530205, -1.8114391375548706, -1.755094231825756, -1.4920478184535488]}}