{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:52:36.552248", "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": "2013-Feb-09_to_2013-Feb-12_24.0_-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": 2013020000388}, "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": "February 09 2013"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 12 2013"}, "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": 109692.28973810293}, "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": ["Zambia", "Zimbabwe"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa", "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": 24.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "24.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 23.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 27.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2013-02-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, -15.75], [22.75, -15.5], [22.97, -14.97], [23.5, -14.75], [24.03, -14.97], [24.18, -15.32], [24.53, -15.47], [24.68, -15.82], [25.03, -15.97], [25.18, -16.32], [25.53, -16.47], [25.75, -17.0], [25.65, -17.25], [25.75, -17.5], [25.53, -18.03], [25.0, -18.25], [24.47, -18.03], [24.32, -17.68], [23.97, -17.53], [23.82, -17.18], [23.75, -17.15], [23.5, -17.25], [22.97, -17.03], [22.75, -16.5], [22.85, -16.25], [22.75, -16.0], [22.85, -15.75]]]]}, "2013-02-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, -15.75], [22.75, -15.5], [22.97, -14.97], [23.5, -14.75], [23.75, -14.85], [23.82, -14.82], [23.85, -14.75], [23.75, -14.5], [23.97, -13.97], [24.5, -13.75], [25.03, -13.97], [25.18, -14.32], [25.25, -14.35], [25.5, -14.25], [26.03, -14.47], [26.18, -14.82], [26.53, -14.97], [26.75, -15.5], [26.65, -15.75], [26.75, -16.0], [26.65, -16.25], [26.68, -16.32], [26.75, -16.35], [27.0, -16.25], [27.25, -16.35], [27.5, -16.25], [28.03, -16.47], [28.25, -17.0], [28.15, -17.25], [28.25, -17.5], [28.03, -18.03], [27.68, -18.18], [27.53, -18.53], [27.0, -18.75], [26.75, -18.65], [26.5, -18.75], [25.97, -18.53], [25.82, -18.18], [25.75, -18.15], [25.5, -18.25], [25.25, -18.15], [25.0, -18.25], [24.47, -18.03], [24.32, -17.68], [23.97, -17.53], [23.82, -17.18], [23.75, -17.15], [23.5, -17.25], [22.97, -17.03], [22.75, -16.5], [22.85, -16.25], [22.75, -16.0], [22.85, -15.75]]]]}, "2013-02-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, -15.75], [22.75, -15.5], [22.97, -14.97], [23.5, -14.75], [23.75, -14.85], [23.82, -14.82], [23.85, -14.75], [23.75, -14.5], [23.97, -13.97], [24.5, -13.75], [25.03, -13.97], [25.18, -14.32], [25.25, -14.35], [25.5, -14.25], [26.03, -14.47], [26.18, -14.82], [26.53, -14.97], [26.75, -15.5], [26.65, -15.75], [26.75, -16.0], [26.65, -16.25], [26.68, -16.32], [26.75, -16.35], [27.0, -16.25], [27.25, -16.35], [27.5, -16.25], [28.03, -16.47], [28.25, -17.0], [28.15, -17.25], [28.25, -17.5], [28.03, -18.03], [27.68, -18.18], [27.53, -18.53], [27.0, -18.75], [26.75, -18.65], [26.5, -18.75], [25.97, -18.53], [25.82, -18.18], [25.75, -18.15], [25.5, -18.25], [25.25, -18.15], [25.0, -18.25], [24.47, -18.03], [24.32, -17.68], [23.97, -17.53], [23.82, -17.18], [23.75, -17.15], [23.5, -17.25], [22.97, -17.03], [22.75, -16.5], [22.85, -16.25], [22.75, -16.0], [22.85, -15.75]]]]}, "2013-02-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[22.85, -15.75], [22.75, -15.5], [22.97, -14.97], [23.5, -14.75], [23.75, -14.85], [23.82, -14.82], [23.85, -14.75], [23.75, -14.5], [23.97, -13.97], [24.5, -13.75], [25.03, -13.97], [25.18, -14.32], [25.25, -14.35], [25.5, -14.25], [26.03, -14.47], [26.18, -14.82], [26.53, -14.97], [26.75, -15.5], [26.65, -15.75], [26.75, -16.0], [26.65, -16.25], [26.68, -16.32], [26.75, -16.35], [27.0, -16.25], [27.25, -16.35], [27.5, -16.25], [28.03, -16.47], [28.25, -17.0], [28.15, -17.25], [28.25, -17.5], [28.03, -18.03], [27.68, -18.18], [27.53, -18.53], [27.0, -18.75], [26.75, -18.65], [26.5, -18.75], [25.97, -18.53], [25.82, -18.18], [25.75, -18.15], [25.5, -18.25], [25.25, -18.15], [25.0, -18.25], [24.47, -18.03], [24.32, -17.68], [23.97, -17.53], [23.82, -17.18], [23.75, -17.15], [23.5, -17.25], [22.97, -17.03], [22.75, -16.5], [22.85, -16.25], [22.75, -16.0], [22.85, -15.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.3008414626801823}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3065003330474}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.329851041488837, 20.899783753641543, 21.072817243449094, 20.891185365194417]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.951089044842263, 19.13420926102299, 19.349101797290928, 19.694716707918758]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.35871355692767, -2.341547020169605, -2.193265377633369, -2.3719880874224035]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.710146020233765, -3.027028601762879, -3.024177511027517, -3.3008414626801823]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6508191492287858, -1.843335589560624, -1.6943882392263654, -1.8128196498729459]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8715487249925207, -2.440833607258098, -2.1228207755514896, -2.4359420647397036]}}