{"version_information": {"version": "det_AHW_tail10.0_v1.2", "compiled_date": "2026-06-27 18:53:08.883678", "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-Sep-22_to_2024-Sep-25_35.0_-16.0"}, "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": 2024090000481}, "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": "September 22 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 25 2024"}, "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": 98458.05746710024}, "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": ["Malawi", "Mozambique"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.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": -16.0}, "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": 35.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 33.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-09-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, -14.97], [34.0, -14.75], [34.25, -14.85], [34.5, -14.75], [35.03, -14.97], [35.18, -15.32], [35.25, -15.35], [35.5, -15.25], [36.03, -15.47], [36.25, -16.0], [36.15, -16.25], [36.25, -16.5], [36.15, -16.75], [36.25, -17.0], [36.03, -17.53], [35.5, -17.75], [35.25, -17.65], [35.0, -17.75], [34.47, -17.53], [34.32, -17.18], [33.97, -17.03], [33.82, -16.68], [33.47, -16.53], [33.25, -16.0], [33.35, -15.75], [33.25, -15.5], [33.47, -14.97]]]]}, "2024-09-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, -14.97], [34.0, -14.75], [34.25, -14.85], [34.32, -14.82], [34.35, -14.75], [34.25, -14.5], [34.46, -14.0], [34.25, -13.5], [34.47, -12.97], [35.0, -12.75], [35.5, -12.96], [36.0, -12.75], [36.25, -12.85], [36.5, -12.75], [37.03, -12.97], [37.18, -13.32], [37.25, -13.35], [37.5, -13.25], [37.75, -13.35], [38.0, -13.25], [38.53, -13.47], [38.75, -14.0], [38.53, -14.53], [38.18, -14.68], [38.03, -15.03], [37.5, -15.25], [37.25, -15.15], [37.18, -15.18], [37.13, -15.3], [37.53, -15.47], [37.75, -16.0], [37.53, -16.53], [37.0, -16.75], [36.75, -16.65], [36.5, -16.75], [36.2, -16.62], [36.15, -16.75], [36.25, -17.0], [36.03, -17.53], [35.5, -17.75], [35.25, -17.65], [35.0, -17.75], [34.47, -17.53], [34.32, -17.18], [33.97, -17.03], [33.82, -16.68], [33.47, -16.53], [33.25, -16.0], [33.35, -15.75], [33.25, -15.5], [33.47, -14.97]]]]}, "2024-09-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[33.47, -14.97], [34.0, -14.75], [34.25, -14.85], [34.32, -14.82], [34.35, -14.75], [34.25, -14.5], [34.46, -14.0], [34.25, -13.5], [34.47, -12.97], [35.0, -12.75], [35.5, -12.96], [36.0, -12.75], [36.25, -12.85], [36.5, -12.75], [37.03, -12.97], [37.18, -13.32], [37.25, -13.35], [37.5, -13.25], [37.75, -13.35], [38.0, -13.25], [38.53, -13.47], [38.75, -14.0], [38.53, -14.53], [38.18, -14.68], [38.03, -15.03], [37.5, -15.25], [37.25, -15.15], [37.18, -15.18], [37.13, -15.3], [37.53, -15.47], [37.75, -16.0], [37.53, -16.53], [37.0, -16.75], [36.75, -16.65], [36.5, -16.75], [36.2, -16.62], [36.15, -16.75], [36.25, -17.0], [36.03, -17.53], [35.5, -17.75], [35.25, -17.65], [35.0, -17.75], [34.47, -17.53], [34.32, -17.18], [33.97, -17.03], [33.82, -16.68], [33.47, -16.53], [33.25, -16.0], [33.35, -15.75], [33.25, -15.5], [33.47, -14.97]]]]}, "2024-09-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.35, -15.75], [34.25, -15.5], [34.35, -15.25], [34.25, -15.0], [34.35, -14.75], [34.25, -14.5], [34.46, -14.0], [34.25, -13.5], [34.47, -12.97], [35.0, -12.75], [35.5, -12.96], [36.0, -12.75], [36.25, -12.85], [36.5, -12.75], [37.03, -12.97], [37.18, -13.32], [37.25, -13.35], [37.5, -13.25], [37.75, -13.35], [38.0, -13.25], [38.53, -13.47], [38.75, -14.0], [38.53, -14.53], [38.18, -14.68], [38.03, -15.03], [37.5, -15.25], [37.25, -15.15], [37.18, -15.18], [37.13, -15.3], [37.53, -15.47], [37.75, -16.0], [37.53, -16.53], [37.0, -16.75], [36.75, -16.65], [36.5, -16.75], [36.2, -16.62], [36.15, -16.75], [36.25, -17.0], [36.03, -17.53], [35.5, -17.75], [34.97, 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"anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.008055009320458, -6.056643710232208, -4.912016077213593, -3.611179092739974]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5724441958529098, -2.0862991068694265, -2.0979867566420216, -1.4681194105458668]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7152194624911608, -2.5755725592740686, -2.5011965163840286, -1.7367617164023783]}}