{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:52:13.914992", "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": "2023-Apr-03_to_2023-Apr-07_300.0_-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": 2023040000216}, "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": "April 03 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "April 07 2023"}, "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": 102995.81799936315}, "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", "Brazil"]}, "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": -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": 300.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "300.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 300.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -10.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-64.03, -9.47], [-63.5, -9.25], [-63.25, -9.35], [-63.0, -9.25], [-62.75, -9.35], [-62.5, -9.25], [-62.25, -9.35], [-62.0, -9.25], [-61.75, -9.35], [-61.5, -9.25], [-60.97, -9.47], [-60.82, -9.82], [-60.47, -9.97], [-60.32, -10.32], [-60.25, -10.35], [-60.0, -10.25], [-59.47, -10.47], [-59.25, -11.0], [-59.35, -11.25], [-59.25, -11.5], [-59.35, -11.75], [-59.25, -12.0], [-59.35, -12.25], [-59.25, -12.5], [-59.47, -13.03], [-59.82, -13.18], [-59.97, -13.53], [-60.32, -13.68], [-60.47, -14.03], [-61.0, -14.25], [-61.25, -14.15], [-61.5, -14.25], [-62.03, -14.03], [-62.25, -13.5], [-62.15, -13.25], [-62.25, -13.0], [-62.15, -12.75], [-62.25, -12.5], [-62.15, -12.25], [-62.25, -12.0], [-62.07, -11.57], [-62.5, -11.75], [-62.75, -11.65], [-63.0, -11.75], [-63.25, -11.65], [-63.5, -11.75], [-64.03, -11.53], [-64.25, -11.0], [-64.15, -10.75], [-64.25, -10.5], [-64.15, -10.25], [-64.25, -10.0], [-64.03, -9.47]]]]}}, "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": {"2023-04-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.02999999999997, -12.53], [-62.25, -12.0], [-62.02999999999997, -11.47], [-61.5, -11.25], [-61.25, -11.35], [-61.120000000000005, -11.3], [-61.25, -11.0], [-61.02999999999997, -10.47], [-60.5, -10.25], [-59.97000000000003, -10.47], [-59.75, -11.0], [-59.870000000000005, -11.3], [-59.47000000000003, -11.47], [-59.25, -12.0], [-59.35000000000002, -12.25], [-59.25, -12.5], [-59.47000000000003, -13.03], [-60.0, -13.25], [-60.25, -13.15], [-60.5, -13.25], [-60.75, -13.15], [-61.0, -13.25], [-61.52999999999997, -13.03], [-61.68000000000001, -12.68], [-62.02999999999997, -12.53]]]]}, "2023-04-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.02999999999997, -10.53], [-64.25, -10.0], [-64.02999999999997, -9.47], [-63.5, -9.25], [-63.25, -9.35], [-63.0, -9.25], [-62.75, -9.35], [-62.5, -9.25], [-62.25, -9.35], [-62.0, 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23.669830728699196, 23.110939865371677, 23.72871476393675]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [22.66680911152639, 22.888088341470052, 22.74047054128772, 21.962490816151103, 22.77416751165896]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3311391454849897, -1.2741023845070405, -1.420656624731103, -1.9611372166134666, -1.3472460326652804]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.6666585121273556, -1.5916437851889782, -2.088591601042708, -2.3204131854955676, -1.7172642176676618]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.516918672049787, -1.491314747213736, -1.6057545844180585, -2.2268717645811322, -1.49551315210783]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9688694785859326, -1.9474778627652345, -1.9917562344399389, -2.5563756665393123, -1.8126272479286272]}}