{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:24:31.346312", "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-Nov-18_to_2022-Nov-20_317.5_-11.0"}, "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": 2022110000716}, "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": "November 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 20 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": 69523.04526384814}, "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": ["Brazil"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["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": -11.0}, "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": 317.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "317.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 316.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 320.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.0}, "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": [[[[-44.75, -10.5], [-44.53, -9.97], [-44.0, -9.75], [-43.75, -9.85], [-43.5, -9.75], [-43.25, -9.85], [-43.0, -9.75], [-42.75, -9.85], [-42.5, -9.75], [-41.97, -9.97], [-41.82, -10.32], [-41.47, -10.47], [-41.25, -11.0], [-41.35, -11.25], [-41.32, -11.32], [-40.97, -11.47], [-40.82, -11.82], [-40.47, -11.97], [-40.32, -12.32], [-39.97, -12.47], [-39.82, -12.82], [-39.47, -12.97], [-39.25, -13.5], [-39.47, -14.03], [-39.82, -14.18], [-39.97, -14.53], [-40.5, -14.75], [-41.03, -14.53], [-41.18, -14.18], [-41.53, -14.03], [-41.68, -13.68], [-42.03, -13.53], [-42.18, -13.18], [-42.53, -13.03], [-42.68, -12.68], [-43.03, -12.53], [-43.18, -12.18], [-43.53, -12.03], [-43.75, -11.5], [-43.65, -11.25], [-43.68, -11.18], [-43.75, -11.15], [-44.0, -11.25], [-44.53, -11.03], [-44.75, -10.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.0, -11.25], [-44.52999999999997, -11.03], [-44.75, -10.5], [-44.52999999999997, -9.97], [-44.0, -9.75], [-43.75, -9.85], [-43.5, -9.75], [-43.25, -9.85], [-43.0, -9.75], [-42.75, -9.85], [-42.5, -9.75], [-41.97000000000003, -9.97], [-41.81999999999999, -10.32], [-41.47000000000003, -10.47], [-41.25, -11.0], [-41.35000000000002, -11.25], [-41.31999999999999, -11.32], [-40.97000000000003, -11.47], [-40.81999999999999, -11.82], [-40.47000000000003, -11.97], [-40.31999999999999, -12.32], [-39.97000000000003, -12.47], [-39.81999999999999, -12.82], [-39.47000000000003, -12.97], [-39.25, -13.5], [-39.47000000000003, -14.03], [-39.81999999999999, -14.18], [-39.97000000000003, -14.53], [-40.5, -14.75], [-41.02999999999997, -14.53], [-41.18000000000001, -14.18], [-41.52999999999997, -14.03], [-41.68000000000001, -13.68], [-42.02999999999997, -13.53], [-42.18000000000001, -13.18], [-42.52999999999997, -13.03], [-42.68000000000001, -12.68], [-43.02999999999997, -12.53], [-43.18000000000001, -12.18], [-43.52999999999997, -12.03], [-43.75, -11.5], [-43.64999999999998, -11.25], [-43.68000000000001, -11.18], [-43.75, -11.15], [-44.0, -11.25]]]]}, "2022-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.0, -11.25], [-44.52999999999997, -11.03], [-44.75, -10.5], [-44.52999999999997, -9.97], [-44.0, -9.75], [-43.75, -9.85], [-43.5, -9.75], [-43.25, -9.85], [-43.0, -9.75], [-42.75, -9.85], [-42.5, -9.75], [-41.97000000000003, -9.97], [-41.81999999999999, -10.32], [-41.47000000000003, -10.47], [-41.25, -11.0], [-41.35000000000002, -11.25], [-41.31999999999999, -11.32], [-40.97000000000003, -11.47], [-40.81999999999999, -11.82], [-40.47000000000003, -11.97], [-40.31999999999999, -12.32], [-39.97000000000003, -12.47], [-39.81999999999999, -12.82], [-39.47000000000003, -12.97], [-39.25, -13.5], [-39.47000000000003, -14.03], [-39.81999999999999, -14.18], [-39.97000000000003, -14.53], [-40.5, -14.75], [-41.02999999999997, -14.53], [-41.18000000000001, -14.18], [-41.52999999999997, -14.03], [-41.68000000000001, -13.68], [-42.02999999999997, -13.53], [-42.18000000000001, -13.18], [-42.52999999999997, -13.03], [-42.68000000000001, -12.68], [-43.02999999999997, -12.53], [-43.18000000000001, -12.18], [-43.52999999999997, -12.03], [-43.75, -11.5], [-43.64999999999998, -11.25], [-43.68000000000001, -11.18], [-43.75, -11.15], [-44.0, -11.25]]]]}, "2022-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.0, -11.25], [-44.52999999999997, -11.03], [-44.75, -10.5], [-44.52999999999997, -9.97], [-44.0, -9.75], [-43.75, -9.85], [-43.5, -9.75], [-43.25, -9.85], [-43.0, -9.75], [-42.75, -9.85], [-42.5, -9.75], [-41.97000000000003, -9.97], [-41.81999999999999, -10.32], [-41.47000000000003, -10.47], [-41.25, -11.0], [-41.35000000000002, -11.25], [-41.31999999999999, -11.32], [-40.97000000000003, -11.47], [-40.81999999999999, -11.82], [-40.47000000000003, -11.97], [-40.31999999999999, -12.32], [-39.97000000000003, -12.47], [-39.81999999999999, -12.82], [-39.47000000000003, -12.97], [-39.25, -13.5], [-39.47000000000003, -14.03], [-39.81999999999999, -14.18], [-39.97000000000003, -14.53], [-40.5, -14.75], [-41.02999999999997, -14.53], [-41.18000000000001, -14.18], [-41.52999999999997, -14.03], [-41.68000000000001, -13.68], [-42.02999999999997, -13.53], [-42.18000000000001, -13.18], [-42.52999999999997, -13.03], [-42.68000000000001, -12.68], [-43.02999999999997, -12.53], [-43.18000000000001, -12.18], [-43.52999999999997, -12.03], [-43.75, -11.5], [-43.64999999999998, -11.25], [-43.68000000000001, -11.18], [-43.75, -11.15], [-44.0, -11.25]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.226858067208582}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.638241650830461}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.485588090425267, 22.2225107778213, 22.205104800932304]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [19.515852059195026, 19.200847148176933, 19.336005186842385]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.5324187518681676, -2.7095832030388984, -2.672722997584317]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.5724396751254517, -3.7909913458431674, -4.226858067208582]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4474012689050957, -1.564214995033256, -1.506351990914877]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.6628669570668095, -1.7149484613559582, -1.8808822877456859]}}