{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:18.025263", "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-May-29_to_2022-Jun-02_41.0_-12.0"}, "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": 2022050001077}, "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 29 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 02 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 66356.68622639513}, "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": ["Indian Ocean"]}, "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": -12.0}, "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": 41.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "41.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 40.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 42.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[42.65, -13.25], [42.75, -13.5], [42.65, -13.75], [42.75, -14.0], [42.65, -14.25], [42.75, -14.5], [42.53, -15.03], [42.0, -15.25], [41.75, -15.15], [41.5, -15.25], [40.97, -15.03], [40.75, -14.5], [40.85, -14.25], [40.75, -14.0], [40.85, -13.75], [40.8, -13.63], [40.8, -13.62], [40.5, -13.75], [39.97, -13.53], [39.75, -13.0], [39.85, -12.75], [39.75, -12.5], [39.85, -12.25], [39.75, -12.0], [39.85, -11.75], [39.75, -11.5], [39.97, -10.97], [40.32, -10.82], [40.35, -10.75], [40.25, -10.5], [40.47, -9.97], [41.0, -9.75], [41.53, -9.97], [41.75, -10.5], [41.65, -10.75], [41.68, -10.82], [42.03, -10.97], [42.18, -11.32], [42.53, -11.47], [42.75, -12.0], [42.65, -12.25], [42.75, -12.5], [42.65, -12.75], [42.75, -13.0], [42.65, -13.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Eastern-Africa", "E.Southern-Africa"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[40.25, -12.0], [40.47, -11.47], [41.0, -11.25], [41.25, -11.35], [41.5, -11.25], [42.03, -11.47], [42.25, -12.0], [42.15, -12.25], [42.18, -12.32], [42.53, -12.47], [42.75, -13.0], [42.65, -13.25], [42.75, -13.5], [42.65, -13.75], [42.75, -14.0], [42.53, -14.53], [42.0, -14.75], [41.47, -14.53], [41.32, -14.18], [40.97, -14.03], [40.75, -13.5], [40.85, -13.25], [40.82, -13.18], [40.47, -13.03], [40.25, -12.5], [40.35, -12.25], [40.25, -12.0]]]]}, "2022-05-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -12.5], [39.85, -12.25], [39.75, -12.0], [39.85, -11.75], [39.75, -11.5], [39.97, -10.97], [40.32, -10.82], [40.35, -10.75], [40.25, -10.5], [40.47, -9.97], [41.0, -9.75], [41.53, -9.97], [41.75, -10.5], [41.65, -10.75], [41.68, -10.82], [42.03, -10.97], [42.18, -11.32], [42.53, -11.47], [42.75, -12.0], [42.65, -12.25], [42.75, -12.5], [42.65, -12.75], [42.75, -13.0], [42.65, -13.25], [42.75, -13.5], [42.65, -13.75], [42.75, -14.0], [42.65, -14.25], [42.75, -14.5], [42.53, -15.03], [42.0, -15.25], [41.75, -15.15], [41.5, -15.25], [40.97, -15.03], [40.75, -14.5], [40.85, -14.25], [40.75, -14.0], [40.85, -13.75], [40.8, -13.62], [40.5, -13.75], [39.97, -13.53], [39.75, -13.0], [39.85, -12.75], [39.75, -12.5]]]]}, "2022-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -12.5], [39.85, -12.25], [39.75, -12.0], [39.85, -11.75], [39.75, -11.5], [39.97, -10.97], [40.32, -10.82], [40.35, -10.75], [40.25, -10.5], [40.47, -9.97], [41.0, -9.75], [41.53, -9.97], [41.75, -10.5], [41.65, -10.75], [41.68, -10.82], [42.03, -10.97], [42.18, -11.32], [42.53, -11.47], [42.75, -12.0], [42.65, -12.25], [42.75, -12.5], [42.65, -12.75], [42.75, -13.0], [42.65, -13.25], [42.75, -13.5], [42.65, -13.75], [42.75, -14.0], [42.65, -14.25], [42.75, -14.5], [42.53, -15.03], [42.0, -15.25], [41.75, -15.15], [41.5, -15.25], [40.97, -15.03], [40.75, -14.5], [40.85, -14.25], [40.75, -14.0], [40.85, -13.75], [40.8, -13.62], [40.5, -13.75], [39.97, -13.53], [39.75, -13.0], [39.85, -12.75], [39.75, -12.5]]]]}, "2022-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -12.5], [39.85, -12.25], [39.75, -12.0], [39.85, -11.75], [39.75, -11.5], [39.97, -10.97], [40.32, -10.82], [40.35, -10.75], [40.25, -10.5], [40.47, -9.97], [41.0, -9.75], [41.53, -9.97], [41.75, -10.5], [41.65, -10.75], [41.68, -10.82], [42.03, -10.97], [42.18, -11.32], [42.53, -11.47], [42.75, -12.0], [42.65, -12.25], [42.75, -12.5], [42.65, -12.75], [42.75, -13.0], [42.65, -13.25], [42.75, -13.5], [42.65, -13.75], [42.75, -14.0], [42.65, -14.25], [42.75, -14.5], [42.53, -15.03], [42.0, -15.25], [41.75, -15.15], [41.5, -15.25], [40.97, -15.03], [40.75, -14.5], [40.85, -14.25], [40.75, -14.0], [40.93, -13.57], [40.5, -13.75], [39.97, -13.53], [39.75, -13.0], [39.85, -12.75], [39.75, -12.5]]]]}, "2022-06-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[39.75, -11.5], [39.97, -10.97], [40.5, -10.75], [41.03, -10.97], [41.18, -11.32], [41.53, -11.47], [41.75, -12.0], [41.65, -12.25], [41.75, -12.5], [41.53, -13.03], [41.18, -13.18], [41.03, -13.53], [40.5, -13.75], [39.97, -13.53], [39.75, -13.0], [39.96, -12.5], [39.75, -12.0], [39.85, -11.75], [39.75, -11.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.4196325806972254}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0232055329153709}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.056006362091807, 24.71829592475899, 24.87424981983594, 24.60245724317855, 24.479197583365874]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.77839391260926, 23.471420598853285, 23.664293550686637, 23.847414738456052, 23.700742504764946]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.980050545303306, -1.1277707355004287, -0.903393945431958, -1.0944844860335095, -0.8685970010736697]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.169434072126137, -1.4137425244059045, -1.261911913871188, -1.4196325806972254, -0.9616914642367647]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.7024364413043902, -1.975088908604773, -1.578854937666817, -1.9337050711354475, -1.5278969470654769]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0454389474157533, -2.5135535668518, -2.146403927579411, -2.521527620300591, -1.8015570307318793]}}