{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:20:19.611720", "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-31_to_2022-Jun-03_295.5_-17.0"}, "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": 2022050001158}, "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 31 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 03 2022"}, "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": 64476.34863670243}, "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", "Paraguay"]}, "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": -17.0}, "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": 295.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "295.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 295.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 299.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-64.0, -15.75], [-63.47, -15.97], [-63.25, -16.5], [-63.35, -16.75], [-63.32, -16.82], [-62.97, -16.97], [-62.82, -17.32], [-62.47, -17.47], [-62.32, -17.82], [-61.97, -17.97], [-61.82, -18.32], [-61.75, -18.35], [-61.5, -18.25], [-60.97, -18.47], [-60.82, -18.82], [-60.75, -18.85], [-60.5, -18.75], [-59.97, -18.97], [-59.75, -19.5], [-59.85, -19.75], [-59.75, -20.0], [-59.97, -20.53], [-60.5, -20.75], [-60.75, -20.65], [-61.0, -20.75], [-61.25, -20.65], [-61.5, -20.75], [-62.03, -20.53], [-62.18, -20.18], [-62.25, -20.15], [-62.5, -20.25], [-63.03, -20.03], [-63.25, -19.5], [-63.15, -19.25], [-63.18, -19.18], [-63.25, -19.15], [-63.5, -19.25], [-64.03, -19.03], [-64.25, -18.5], [-64.12, -18.2], [-64.53, -18.03], [-64.68, -17.68], [-64.75, -17.65], [-65.0, -17.75], [-65.53, -17.53], [-65.75, -17.0], [-65.53, -16.47], [-65.18, -16.32], [-65.03, -15.97], [-64.5, -15.75], [-64.25, -15.85], [-64.0, -15.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-05-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.02999999999997, -15.97], [-64.5, -15.75], [-64.25, -15.85], [-64.0, -15.75], [-63.47000000000003, -15.97], [-63.25, -16.5], [-63.35000000000002, -16.75], [-63.31999999999999, -16.82], [-62.97000000000003, -16.97], [-62.81999999999999, -17.32], [-62.47000000000003, -17.47], [-62.31999999999999, -17.82], [-61.97000000000003, -17.97], [-61.81999999999999, -18.32], [-61.75, -18.35], [-61.5, -18.25], [-60.97000000000003, -18.47], [-60.81999999999999, -18.82], [-60.75, -18.85], [-60.5, -18.75], [-59.97000000000003, -18.97], [-59.75, -19.5], [-59.85000000000002, -19.75], [-59.75, -20.0], [-59.97000000000003, -20.53], [-60.5, -20.75], [-60.75, -20.65], [-61.0, -20.75], [-61.25, -20.65], [-61.5, -20.75], [-62.02999999999997, -20.53], [-62.18000000000001, -20.18], [-62.25, -20.15], [-62.5, -20.25], [-63.02999999999997, -20.03], [-63.25, -19.5], [-63.14999999999998, -19.25], [-63.18000000000001, -19.18], [-63.25, -19.15], [-63.5, -19.25], [-64.02999999999997, -19.03], [-64.25, -18.5], [-64.12, -18.2], [-64.52999999999997, -18.03], [-64.68, -17.68], [-64.75, -17.65], [-65.0, -17.75], [-65.52999999999997, -17.53], [-65.75, -17.0], [-65.52999999999997, -16.47], [-65.18, -16.32], [-65.02999999999997, -15.97]]]]}, "2022-06-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.02999999999997, -15.97], [-64.5, -15.75], [-64.25, -15.85], [-64.0, -15.75], [-63.47000000000003, -15.97], [-63.25, -16.5], [-63.35000000000002, -16.75], [-63.31999999999999, -16.82], [-62.97000000000003, -16.97], [-62.81999999999999, -17.32], [-62.47000000000003, -17.47], [-62.31999999999999, -17.82], [-61.97000000000003, -17.97], [-61.81999999999999, -18.32], [-61.75, -18.35], [-61.5, -18.25], [-60.97000000000003, -18.47], [-60.81999999999999, -18.82], [-60.75, -18.85], [-60.5, -18.75], 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[-65.02999999999997, -15.97]]]]}, "2022-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-65.0, -17.75], [-65.52999999999997, -17.53], [-65.75, -17.0], [-65.52999999999997, -16.47], [-65.0, -16.25], [-64.75, -16.35], [-64.5, -16.25], [-63.97000000000003, -16.47], [-63.75, -17.0], [-63.97000000000003, -17.53], [-64.5, -17.75], [-64.75, -17.65], [-65.0, -17.75]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.514553717876311}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.776516958352922}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [14.61792334285991, 14.39587869529879, 14.216676858134633, 16.762911799739413]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.678295937153166, 12.300643141124624, 12.259684139694912, 16.61327491451624]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.691966457903437, -5.81555500217265, -5.988712432973572, -3.9430037604531094]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.342021720233674, -7.380412982996347, -7.514553717876311, -4.043353425506666]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.522797815703064, -1.4957648532282306, -1.5559519059187246, -1.3387774502137404]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9284776517467652, -1.706029173838662, -1.6882794131796384, -1.3689306044683203]}}