{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:50:19.186301", "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-06_to_2012-May-11_35.5_0.0"}, "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": 2012050000449}, "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 06 2012"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 11 2012"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 52537.02583505375}, "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": ["Kenya", "Tanzania"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-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": 0.0}, "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": 35.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "35.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 34.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 36.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -2.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 2.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2012-05-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.88, -0.8], [34.75, -0.5], [34.85, -0.25], [34.75, 0.0], [34.97, 0.53], [35.5, 0.75], [35.75, 0.65], [36.0, 0.75], [36.53, 0.53], [36.75, 0.0], [36.53, -0.53], [36.18, -0.68], [36.03, -1.03], [35.63, -1.2], [35.75, -1.5], [35.65, -1.75], [35.75, -2.0], [35.53, -2.53], [35.0, -2.75], [34.75, -2.65], [34.5, -2.75], [33.97, -2.53], [33.75, -2.0], [33.97, -1.47], [34.32, -1.32], [34.47, -0.97], [34.88, -0.8]]]]}, "2012-05-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.82, -0.82], [34.85, -0.75], [34.75, -0.5], [34.85, -0.25], [34.75, 0.0], [34.85, 0.25], [34.75, 0.5], [34.85, 0.75], [34.75, 1.0], [34.97, 1.53], [35.32, 1.68], [35.47, 2.03], [35.82, 2.18], [35.97, 2.53], [36.5, 2.75], [37.03, 2.53], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.15, 1.25], [37.25, 1.0], [37.15, 0.75], [37.25, 0.5], [37.03, -0.03], [36.68, -0.18], [36.65, -0.25], [36.75, -0.5], [36.53, -1.03], [36.18, -1.18], [36.03, -1.53], [35.68, -1.68], [35.65, -1.75], [35.75, -2.0], [35.53, -2.53], [35.0, -2.75], [34.75, -2.65], [34.5, -2.75], [33.97, -2.53], [33.75, -2.0], [33.97, -1.47], [34.32, -1.32], [34.47, -0.97], [34.82, -0.82]]]]}, "2012-05-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.82, -0.82], [34.85, -0.75], [34.75, -0.5], [34.85, -0.25], [34.75, 0.0], [34.85, 0.25], [34.75, 0.5], [34.85, 0.75], [34.75, 1.0], [34.97, 1.53], [35.32, 1.68], [35.47, 2.03], [35.82, 2.18], [35.97, 2.53], [36.5, 2.75], [37.03, 2.53], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.15, 1.25], [37.25, 1.0], [37.15, 0.75], [37.25, 0.5], [37.03, -0.03], [36.68, -0.18], [36.65, -0.25], [36.75, -0.5], [36.53, -1.03], [36.18, -1.18], [36.03, -1.53], [35.68, -1.68], [35.65, -1.75], [35.75, -2.0], [35.53, -2.53], [35.0, -2.75], [34.75, -2.65], [34.5, -2.75], [33.97, -2.53], [33.75, -2.0], [33.97, -1.47], [34.32, -1.32], [34.47, -0.97], [34.82, -0.82]]]]}, "2012-05-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[34.85, -0.25], [34.75, 0.0], [34.85, 0.25], [34.75, 0.5], [34.85, 0.75], [34.75, 1.0], [34.97, 1.53], [35.32, 1.68], [35.47, 2.03], [35.82, 2.18], [35.97, 2.53], [36.5, 2.75], [37.03, 2.53], [37.25, 2.0], [37.15, 1.75], [37.25, 1.5], [37.15, 1.25], [37.25, 1.0], [37.15, 0.75], [37.25, 0.5], [37.04, 0.0], [37.25, -0.5], [37.03, -1.03], [36.5, -1.25], [36.25, -1.15], [36.18, -1.18], [36.03, -1.53], [35.5, -1.75], [34.97, -1.53], [34.75, -1.0], [34.85, -0.75], [34.75, -0.5], [34.85, -0.25]]]]}, "2012-05-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.5, 0.25], [37.03, 0.03], [37.25, -0.5], [37.03, -1.03], [36.5, -1.25], [35.97, -1.03], [35.75, -0.5], [35.97, 0.03], [36.5, 0.25]]]]}, "2012-05-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[36.5, 0.25], [37.03, 0.03], [37.25, -0.5], [37.03, -1.03], [36.5, -1.25], [35.97, -1.03], [35.75, -0.5], [35.97, 0.03], [36.5, 0.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.064359377942253}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.7520510441184056}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.040948673770288, 19.17662196342036, 18.91529921973506, 18.487041075967284, 13.09520055752165, 13.279777064357006]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.706911691620235, 14.660165161168493, 14.488359613683258, 12.838255281034947, 13.09520055752165, 13.279777064357006]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2794818338857301, -1.7268794133097458, -1.9789636375853377, -1.83784007687992, -1.0405378269167613, -0.8700776615225436]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6381945096405275, -3.0456710760888086, -4.064359377942253, -3.1120777067304175, -1.0405378269167613, -0.8700776615225436]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.317243282024754, -1.5293416044441024, -1.7755804743917927, -1.7645545551409652, -1.6088544462056198, -1.3362173267160187]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.561298432458893, -1.7396125270675211, -2.2390493674548124, -2.0659494999021164, -1.6088544462056198, -1.3362173267160187]}}