{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:23.612170", "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": "2017-Nov-11_to_2017-Nov-13_33.0_-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": 2017110000408}, "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": "November 11 2017"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 13 2017"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 62146.33934773733}, "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": ["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": -16.5}, "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": 33.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "33.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 31.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 35.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -18.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -14.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2017-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.25, -16.0], [31.47, -15.47], [31.82, -15.32], [31.85, -15.25], [31.75, -15.0], [31.97, -14.47], [32.5, -14.25], [33.03, -14.47], [33.18, -14.82], [33.53, -14.97], [33.68, -15.32], [34.03, -15.47], [34.18, -15.82], [34.53, -15.97], [34.75, -16.5], [34.65, -16.75], [34.68, -16.82], [34.75, -16.85], [35.0, -16.75], [35.53, -16.97], [35.75, -17.5], [35.65, -17.75], [35.75, -18.0], [35.53, -18.53], [35.18, -18.68], [35.03, -19.03], [34.5, -19.25], [33.97, -19.03], [33.82, -18.68], [33.47, -18.53], [33.25, -18.0], [33.35, -17.75], [33.32, -17.68], [33.25, -17.65], [33.0, -17.75], [32.47, -17.53], [32.32, -17.18], [31.97, -17.03], [31.82, -16.68], [31.47, -16.53], [31.25, -16.0]]]]}, "2017-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.25, -16.0], [31.47, -15.47], [31.82, -15.32], [31.85, -15.25], [31.75, -15.0], [31.97, -14.47], [32.5, -14.25], [33.03, -14.47], [33.18, -14.82], [33.53, -14.97], [33.68, -15.32], [34.03, -15.47], [34.18, -15.82], [34.53, -15.97], [34.75, -16.5], [34.65, -16.75], [34.68, -16.82], [34.75, -16.85], [35.0, -16.75], [35.53, -16.97], [35.75, -17.5], [35.65, -17.75], [35.75, -18.0], [35.53, -18.53], [35.18, -18.68], [35.03, -19.03], [34.5, -19.25], [33.97, -19.03], [33.82, -18.68], [33.47, -18.53], [33.25, -18.0], [33.35, -17.75], [33.32, -17.68], [33.25, -17.65], [33.0, -17.75], [32.47, -17.53], [32.32, -17.18], [31.97, -17.03], [31.82, -16.68], [31.47, -16.53], [31.25, -16.0]]]]}, "2017-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[31.25, -16.0], [31.47, -15.47], [31.82, -15.32], [31.85, -15.25], [31.75, -15.0], [31.97, -14.47], [32.5, -14.25], [33.03, -14.47], [33.18, -14.82], [33.53, -14.97], [33.68, -15.32], [34.03, -15.47], [34.18, -15.82], [34.53, -15.97], [34.75, -16.5], [34.65, -16.75], [34.68, -16.82], [34.75, -16.85], [35.0, -16.75], [35.53, -16.97], [35.75, -17.5], [35.65, -17.75], [35.75, -18.0], [35.53, -18.53], [35.18, -18.68], [35.03, -19.03], [34.5, -19.25], [33.97, -19.03], [33.82, -18.68], [33.47, -18.53], [33.25, -18.0], [33.35, -17.75], [33.32, -17.68], [33.25, -17.65], [33.0, -17.75], [32.47, -17.53], [32.32, -17.18], [31.97, -17.03], [31.82, -16.68], [31.47, -16.53], [31.25, -16.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.072761078853944}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.900571422087157}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.926253289747876, 25.6007946485625, 25.30432652346167]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.917857627276362, 23.180324913457582, 22.592145995019223]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.15122688766337, -3.624925220703203, -3.9255621578948983]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.072761078853944, -4.2100242398359455, -4.2855971921677565]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6371429088317768, -1.4900457529362523, -1.6539526259147588]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.029121625092245, -1.6689206751296488, -1.81324613314168]}}