{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:53.289000", "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": "2022-Jan-24_to_2022-Jan-26_37.0_-15.0"}, "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": 2022010000940}, "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 24 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 26 2022"}, "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": 56856.583803972586}, "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"]}, "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": -15.0}, "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": 37.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "37.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 36.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 38.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -13.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[35.82, -13.32], [35.97, -12.97], [36.5, -12.75], [36.75, -12.85], [37.0, -12.75], [37.25, -12.85], [37.5, -12.75], [38.03, -12.97], [38.18, -13.32], [38.53, -13.47], [38.68, -13.82], [39.03, -13.97], [39.25, -14.5], [39.15, -14.75], [39.25, -15.0], [39.03, -15.53], [38.68, -15.68], [38.53, -16.03], [38.0, -16.25], [37.75, -16.15], [37.5, -16.25], [36.97, -16.03], [36.82, -15.68], [36.75, -15.65], [36.5, -15.75], [35.97, -15.53], [35.82, -15.18], [35.47, -15.03], [35.25, -14.5], [35.35, -14.25], [35.25, -14.0], [35.47, -13.47], [35.82, -13.32]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, -14.0], [35.47, -13.47], [35.82, -13.32], [35.97, -12.97], [36.5, -12.75], [36.75, -12.85], [37.0, -12.75], [37.25, -12.85], [37.5, -12.75], [38.03, -12.97], [38.18, -13.32], [38.53, -13.47], [38.68, -13.82], [39.03, -13.97], [39.25, -14.5], [39.15, -14.75], [39.25, -15.0], [39.03, -15.53], [38.68, -15.68], [38.53, -16.03], [38.0, -16.25], [37.75, -16.15], [37.5, -16.25], [36.97, -16.03], [36.82, -15.68], [36.75, -15.65], [36.5, -15.75], [35.97, -15.53], [35.82, -15.18], [35.47, -15.03], [35.25, -14.5], [35.35, -14.25], [35.25, -14.0]]]]}, "2022-01-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, -14.0], [35.47, -13.47], [35.82, -13.32], [35.97, -12.97], [36.5, -12.75], [36.75, -12.85], [37.0, -12.75], [37.25, -12.85], [37.5, -12.75], [38.03, -12.97], [38.18, -13.32], [38.53, -13.47], [38.68, -13.82], [39.03, -13.97], [39.25, -14.5], [39.15, -14.75], [39.25, -15.0], [39.03, -15.53], [38.68, -15.68], [38.53, -16.03], [38.0, -16.25], [37.75, -16.15], [37.5, -16.25], [36.97, -16.03], [36.82, -15.68], [36.75, -15.65], [36.5, -15.75], [35.97, -15.53], [35.82, -15.18], [35.47, -15.03], [35.25, -14.5], [35.35, -14.25], [35.25, -14.0]]]]}, "2022-01-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[35.25, -14.0], [35.47, -13.47], [35.82, -13.32], [35.97, -12.97], [36.5, -12.75], [36.75, -12.85], [37.0, -12.75], [37.25, -12.85], [37.5, -12.75], [38.03, -12.97], [38.18, -13.32], [38.53, -13.47], [38.68, -13.82], [39.03, -13.97], [39.25, -14.5], [39.15, -14.75], [39.25, -15.0], [39.03, -15.53], [38.68, -15.68], [38.53, -16.03], [38.0, -16.25], [37.75, -16.15], [37.5, -16.25], [36.97, -16.03], [36.82, -15.68], [36.75, -15.65], [36.5, -15.75], [35.97, -15.53], [35.82, -15.18], [35.47, -15.03], [35.25, -14.5], [35.35, -14.25], [35.25, -14.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.276683038801991}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0070916694286773}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.239541578486126, 22.512110815752578, 22.71095365979039]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.080853602018124, 21.098284877443177, 21.29153922293193]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.934174713830732, -1.6527804318765549, -1.434319862578745]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.276683038801991, -2.2240340474883737, -2.012444174660345]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-3.3345490845164227, -1.9552625556330412, -1.7322150518674304]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-3.753589642889381, -2.768476798144493, -2.5499925987222976]}}