{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:23:32.185197", "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-Oct-11_to_2022-Oct-15_291.0_-14.0"}, "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": 2022100000520}, "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": "October 11 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 15 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": 90183.42258287719}, "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": ["Bolivia, Plurinational State of", "Peru"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "America"]}, "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": -14.0}, "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": 291.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "291.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 290.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 294.0}, "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": -12.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-68.5, -16.25], [-69.03, -16.03], [-69.25, -15.5], [-69.15, -15.25], [-69.18, -15.18], [-69.53, -15.03], [-69.68, -14.68], [-70.03, -14.53], [-70.25, -14.0], [-70.15, -13.75], [-70.18, -13.68], [-70.53, -13.53], [-70.75, -13.0], [-70.53, -12.47], [-70.0, -12.25], [-69.75, -12.35], [-69.5, -12.25], [-69.25, -12.35], [-69.0, -12.25], [-68.75, -12.35], [-68.68, -12.32], [-68.65, -12.25], [-68.75, -12.0], [-68.53, -11.47], [-68.0, -11.25], [-67.75, -11.35], [-67.5, -11.25], [-67.0, -11.46], [-66.5, -11.25], [-65.97, -11.47], [-65.82, -11.82], [-65.47, -11.97], [-65.25, -12.5], [-65.47, -13.03], [-66.0, -13.25], [-66.25, -13.15], [-66.5, -13.25], [-66.75, -13.15], [-66.82, -13.18], [-66.85, -13.25], [-66.75, -13.5], [-66.85, -13.75], [-66.75, -14.0], [-66.97, -14.53], [-67.32, -14.68], [-67.35, -14.75], [-67.25, -15.0], [-67.47, -15.53], [-67.82, -15.68], [-67.97, -16.03], [-68.5, -16.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-10-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-69.5, -14.75], [-70.02999999999997, -14.53], [-70.25, -14.0], [-70.02999999999997, -13.47], [-69.5, -13.25], [-69.25, -13.35], [-69.18, -13.32], [-69.02999999999997, -12.97], [-68.5, -12.75], [-67.97000000000003, -12.97], [-67.75, -13.5], [-67.85000000000002, -13.75], [-67.75, -14.0], [-67.85000000000002, -14.25], [-67.82, -14.32], [-67.47000000000003, -14.47], [-67.25, -15.0], [-67.47000000000003, -15.53], [-68.0, -15.75], [-68.52999999999997, -15.53], [-68.68, -15.18], [-69.02999999999997, -15.03], [-69.18, -14.68], [-69.25, -14.65], [-69.5, -14.75]]]]}, "2022-10-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-70.52999999999997, -13.53], [-70.75, -13.0], [-70.52999999999997, -12.47], [-70.0, -12.25], [-69.75, -12.35], [-69.5, -12.25], [-69.25, -12.35], [-69.0, -12.25], [-68.75, -12.35], [-68.68, -12.32], [-68.64999999999998, -12.25], 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-2.943316102526736}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [18.38689950036826, 21.91784955376744, 20.832867113307827, 21.159298913013288, 12.589617235938931]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.374264642531728, 13.956232283955103, 11.306745321142785, 11.126352134804563, 12.108113200687797]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.9534284633007815, -2.822442366828921, -3.188354453149009, -3.1109317313583915, -1.4992094425809057]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6244458791605325, -3.8688967589615686, -4.66442759493907, -4.517457272886702, -1.655684150839818]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3357205627569524, -1.4775209186505236, -1.7531433503980962, -1.6584352477387638, -1.4675478139536362]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6807557684066028, -2.154649649446927, -2.4724664476135074, -2.3742637322704327, -1.5708406976935476]}}