{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:44:14.615703", "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": "2010-Mar-17_to_2010-Mar-20_23.5_7.5"}, "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": 2010030000542}, "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": "March 17 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 20 2010"}, "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": 119717.26634567817}, "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": ["Central African Republic", "South Sudan"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Central-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": 7.5}, "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": 23.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "23.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 22.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 26.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 5.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 8.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-03-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, 8.03], [22.32, 8.18], [22.47, 8.53], [23.0, 8.75], [23.25, 8.65], [23.5, 8.75], [23.75, 8.65], [24.0, 8.75], [24.53, 8.53], [24.68, 8.18], [24.75, 8.15], [25.0, 8.25], [25.53, 8.03], [25.68, 7.68], [26.03, 7.53], [26.18, 7.18], [26.53, 7.03], [26.75, 6.5], [26.65, 6.25], [26.75, 6.0], [26.53, 5.47], [26.0, 5.25], [25.75, 5.35], [25.68, 5.32], [25.53, 4.97], [25.0, 4.75], [24.75, 4.85], [24.5, 4.75], [24.25, 4.85], [24.0, 4.75], [23.75, 4.85], [23.5, 4.75], [23.25, 4.85], [23.0, 4.75], [22.47, 4.97], [22.25, 5.5], [22.35, 5.75], [22.32, 5.82], [21.97, 5.97], [21.75, 6.5], [21.96, 7.0], [21.75, 7.5], [21.97, 8.03]]]]}, "2010-03-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, 8.03], [22.32, 8.18], [22.47, 8.53], [23.0, 8.75], [23.25, 8.65], [23.5, 8.75], [23.75, 8.65], [24.0, 8.75], [24.53, 8.53], [24.68, 8.18], [24.75, 8.15], [25.0, 8.25], [25.25, 8.15], [25.5, 8.25], [25.75, 8.15], [26.0, 8.25], [26.53, 8.03], [26.68, 7.68], [27.03, 7.53], [27.25, 7.0], [27.03, 6.47], [26.68, 6.32], [26.65, 6.25], [26.75, 6.0], [26.53, 5.47], [26.0, 5.25], [25.75, 5.35], [25.68, 5.32], [25.53, 4.97], [25.0, 4.75], [24.75, 4.85], [24.5, 4.75], [24.25, 4.85], [24.0, 4.75], [23.75, 4.85], [23.5, 4.75], [23.25, 4.85], [23.0, 4.75], [22.47, 4.97], [22.25, 5.5], [22.35, 5.75], [22.32, 5.82], [21.97, 5.97], [21.75, 6.5], [21.96, 7.0], [21.75, 7.5], [21.97, 8.03]]]]}, "2010-03-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[21.97, 8.03], [22.32, 8.18], [22.47, 8.53], [23.0, 8.75], [23.25, 8.65], [23.5, 8.75], [23.75, 8.65], [24.0, 8.75], [24.53, 8.53], [24.68, 8.18], [24.75, 8.15], [25.0, 8.25], [25.25, 8.15], [25.5, 8.25], [25.75, 8.15], [26.0, 8.25], [26.53, 8.03], [26.68, 7.68], [27.03, 7.53], [27.25, 7.0], [27.03, 6.47], [26.68, 6.32], [26.65, 6.25], [26.75, 6.0], [26.53, 5.47], [26.0, 5.25], [25.75, 5.35], [25.68, 5.32], [25.53, 4.97], [25.0, 4.75], [24.75, 4.85], [24.5, 4.75], [24.25, 4.85], [24.0, 4.75], [23.75, 4.85], [23.5, 4.75], [23.25, 4.85], [23.0, 4.75], [22.47, 4.97], [22.25, 5.5], 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amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.8986039900433287}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.236403932952328, 24.7916522417691, 24.819287605272848, 25.877612079635696]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.936974077035245, 23.654532619398765, 23.65562172527649, 25.456421990649517]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.6859709673911327, -3.153223015495145, -3.119633528739715, -2.3696450277122327]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.454850501170881, -3.768497359450407, -4.665579386543925, -2.6587350411958255]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7359114037615349, -1.9659398278582676, -1.9142092622628422, -1.417386779812162]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.2226742702427447, -2.4561359246057886, -2.6339702687525763, -1.5545862445492382]}}