{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:18:54.668660", "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": "2019-Jan-20_to_2019-Jan-23_35.5_-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": 2019010000645}, "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": "January 20 2019"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 23 2019"}, "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": 83014.50491720144}, "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": 35.5}, "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": 33.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 37.25}, "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": -14.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2019-01-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, -15.0], [32.97, -14.47], [33.5, -14.25], [33.75, -14.35], [34.0, -14.25], [34.25, -14.35], [34.5, -14.25], [35.03, -14.47], [35.18, -14.82], [35.25, -14.85], [35.5, -14.75], [35.75, -14.85], [36.0, -14.75], [36.53, -14.97], [36.75, -15.5], [36.54, -16.0], [36.68, -16.32], [37.03, -16.47], [37.25, -17.0], [37.03, -17.53], [36.5, -17.75], [36.25, -17.65], [36.0, -17.75], [35.75, -17.65], [35.5, -17.75], [35.25, -17.65], [35.0, -17.75], [34.47, -17.53], [34.25, -17.0], [34.35, -16.75], [34.32, -16.68], [33.97, -16.53], [33.82, -16.18], [33.47, -16.03], [33.32, -15.68], [32.97, -15.53], [32.75, -15.0]]]]}, "2019-01-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, -15.0], [32.97, -14.47], [33.5, -14.25], [33.75, -14.35], [34.0, -14.25], [34.25, -14.35], [34.5, -14.25], [35.03, -14.47], [35.18, -14.82], [35.25, -14.85], [35.5, -14.75], [35.75, -14.85], [36.0, -14.75], [36.53, -14.97], [36.75, -15.5], [36.54, -16.0], [36.68, -16.32], [37.03, -16.47], [37.25, -17.0], [37.15, -17.25], [37.18, -17.32], [37.53, -17.47], [37.75, -18.0], [37.53, -18.53], [37.0, -18.75], [36.75, -18.65], [36.5, -18.75], [35.97, -18.53], [35.82, -18.18], [35.75, -18.15], [35.5, -18.25], [34.97, -18.03], [34.82, -17.68], [34.75, -17.65], [34.5, -17.75], [34.25, -17.65], [34.0, -17.75], [33.47, -17.53], [33.25, -17.0], [33.35, -16.75], [33.25, -16.5], [33.35, -16.25], [33.25, -16.0], [33.35, -15.75], [33.32, -15.68], [32.97, -15.53], [32.75, -15.0]]]]}, "2019-01-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[32.75, -15.0], [32.97, -14.47], [33.5, -14.25], [33.75, -14.35], [34.0, -14.25], [34.25, -14.35], [34.5, -14.25], [35.03, -14.47], [35.18, -14.82], [35.25, -14.85], [35.5, -14.75], [35.75, -14.85], [36.0, -14.75], [36.53, -14.97], [36.75, -15.5], [36.54, -16.0], [36.68, -16.32], [37.03, -16.47], [37.25, -17.0], [37.15, -17.25], [37.18, -17.32], [37.53, -17.47], [37.75, -18.0], [37.53, -18.53], [37.0, -18.75], [36.75, -18.65], [36.5, -18.75], [35.97, -18.53], [35.82, -18.18], [35.75, 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-17.0], [33.35, -16.75], [33.25, -16.5], [33.35, -16.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.875419534834123}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.855930572172412}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.272904681024443, 21.815635254499284, 22.29205454470059, 23.69938364144309]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [18.89785159237158, 17.916541096770686, 18.567286443290016, 20.71818525910129]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.178084738827042, -3.4772104923184832, -3.065883184065695, -2.3525993950412643]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6869574165615404, -4.875419534834123, -4.767884261248753, -2.9873564294865105]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6138208993741445, -2.480470120238546, -2.0480692825795552, -1.500176347112621]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.8665607611032347, -3.2081806080370074, -2.5555264580369883, -1.793562415005836]}}