{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:17:28.046122", "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-Feb-18_to_2022-Feb-22_297.0_-10.0"}, "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": 2022020000751}, "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": "February 18 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 22 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": 94238.3241649933}, "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": -10.0}, "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": 297.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 296.0}, "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": -12.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -9.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-62.15, -11.25], [-62.25, -11.0], [-62.15, -10.75], [-62.18, -10.68], [-62.5, -10.54], [-62.82, -10.68], [-62.97, -11.03], [-63.5, -11.25], [-63.75, -11.15], [-64.0, -11.25], [-64.53, -11.03], [-64.75, -10.5], [-64.53, -9.97], [-64.0, -9.75], [-63.75, -9.85], [-63.68, -9.82], [-63.53, -9.47], [-63.18, -9.32], [-63.15, -9.25], [-63.25, -9.0], [-63.03, -8.47], [-62.5, -8.25], [-62.25, -8.35], [-62.0, -8.25], [-61.75, -8.35], [-61.5, -8.25], [-61.25, -8.35], [-61.0, -8.25], [-60.75, -8.35], [-60.5, -8.25], [-59.97, -8.47], [-59.75, -9.0], [-59.85, -9.25], [-59.75, -9.5], [-59.85, -9.75], [-59.75, -10.0], [-59.85, -10.25], [-59.82, -10.32], [-59.47, -10.47], [-59.25, -11.0], [-59.47, -11.53], [-59.82, -11.68], [-59.97, -12.03], [-60.32, -12.18], [-60.47, -12.53], [-60.82, -12.68], [-60.97, -13.03], [-61.5, -13.25], [-62.03, -13.03], [-62.18, -12.68], [-62.53, -12.53], [-62.75, -12.0], [-62.53, -11.47], [-62.18, -11.32], [-62.15, -11.25]]]]}}, "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": {"2022-02-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-63.25, -9.0], [-63.02999999999997, -8.47], [-62.5, -8.25], [-62.25, -8.35], [-62.0, -8.25], [-61.75, -8.35], [-61.5, -8.25], [-61.25, -8.35], [-61.0, -8.25], [-60.75, -8.35], [-60.5, -8.25], [-59.97000000000003, -8.47], [-59.75, -9.0], [-59.85000000000002, -9.25], [-59.75, -9.5], [-59.85000000000002, -9.75], [-59.75, -10.0], [-59.85000000000002, -10.25], [-59.75, -10.5], [-59.85000000000002, -10.75], [-59.75, -11.0], [-59.97000000000003, -11.53], [-60.31999999999999, -11.68], [-60.47000000000003, -12.03], [-61.0, -12.25], [-61.52999999999997, -12.03], [-61.68000000000001, -11.68], [-62.02999999999997, -11.53], [-62.25, -11.0], [-62.14999999999998, -10.75], [-62.18000000000001, -10.68], [-62.52999999999997, -10.53], [-62.68000000000001, -10.18], [-63.02999999999997, -10.03], [-63.25, -9.5], [-63.14999999999998, -9.25], [-63.25, -9.0]]]]}, "2022-02-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.0, -11.25], [-64.52999999999997, -11.03], [-64.75, -10.5], [-64.52999999999997, -9.97], [-64.0, -9.75], [-63.75, -9.85], [-63.68000000000001, -9.82], [-63.52999999999997, -9.47], [-63.18000000000001, -9.32], [-63.14999999999998, -9.25], [-63.25, -9.0], [-63.02999999999997, -8.47], [-62.5, -8.25], [-62.25, -8.35], [-62.0, -8.25], [-61.75, -8.35], [-61.5, -8.25], [-61.25, -8.35], [-61.0, -8.25], [-60.75, -8.35], [-60.5, -8.25], [-59.97000000000003, -8.47], [-59.75, -9.0], [-59.85000000000002, -9.25], [-59.75, -9.5], [-59.85000000000002, -9.75], [-59.75, -10.0], [-59.85000000000002, -10.25], [-59.81999999999999, -10.32], [-59.47000000000003, -10.47], [-59.25, -11.0], [-59.47000000000003, -11.53], [-59.81999999999999, -11.68], [-59.97000000000003, -12.03], [-60.5, -12.25], [-60.75, -12.15], [-61.0, -12.25], [-61.25, -12.15], [-61.5, -12.25], [-62.02999999999997, -12.03], [-62.25, -11.5], [-62.14999999999998, -11.25], [-62.25, -11.0], [-62.14999999999998, -10.75], [-62.18000000000001, -10.68], [-62.5, -10.54], [-62.81999999999999, -10.68], [-62.97000000000003, -11.03], [-63.5, -11.25], [-63.75, -11.15], [-64.0, -11.25]]]]}, "2022-02-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-64.0, -11.25], [-64.52999999999997, -11.03], [-64.75, -10.5], [-64.52999999999997, -9.97], [-64.0, -9.75], [-63.75, -9.85], [-63.68000000000001, -9.82], [-63.52999999999997, -9.47], [-63.18000000000001, -9.32], [-63.14999999999998, -9.25], [-63.25, -9.0], [-63.02999999999997, -8.47], [-62.5, -8.25], [-62.25, -8.35], [-62.0, -8.25], [-61.75, -8.35], [-61.5, -8.25], [-61.25, -8.35], [-61.0, -8.25], [-60.75, -8.35], [-60.5, -8.25], [-59.97000000000003, -8.47], [-59.75, -9.0], [-59.85000000000002, -9.25], [-59.75, -9.5], [-59.85000000000002, -9.75], [-59.75, -10.0], [-59.85000000000002, -10.25], [-59.81999999999999, -10.32], [-59.47000000000003, -10.47], [-59.25, -11.0], [-59.47000000000003, -11.53], [-59.81999999999999, -11.68], [-59.97000000000003, -12.03], [-60.31999999999999, -12.18], [-60.47000000000003, -12.53], [-60.81999999999999, -12.68], [-60.97000000000003, -13.03], [-61.5, -13.25], [-62.02999999999997, -13.03], [-62.18000000000001, -12.68], [-62.52999999999997, -12.53], [-62.75, -12.0], [-62.52999999999997, -11.47], [-62.18000000000001, -11.32], [-62.14999999999998, -11.25], [-62.25, -11.0], [-62.14999999999998, -10.75], [-62.18000000000001, -10.68], [-62.5, -10.54], [-62.81999999999999, -10.68], [-62.97000000000003, -11.03], [-63.5, -11.25], [-63.75, -11.15], [-64.0, -11.25]]]]}, "2022-02-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.75, -12.0], [-62.52999999999997, -11.47], [-62.18000000000001, -11.32], [-62.02999999999997, -10.97], [-61.5, -10.75], [-61.19999999999999, -10.88], [-61.02999999999997, -10.47], [-60.5, -10.25], [-60.25, -10.35], [-60.0, -10.25], [-59.47000000000003, -10.47], [-59.25, -11.0], [-59.47000000000003, -11.53], [-59.81999999999999, -11.68], [-59.97000000000003, -12.03], [-60.31999999999999, -12.18], [-60.47000000000003, -12.53], [-60.81999999999999, -12.68], [-60.97000000000003, -13.03], [-61.5, -13.25], [-62.02999999999997, -13.03], [-62.18000000000001, -12.68], [-62.52999999999997, -12.53], [-62.75, -12.0]]], [[[-64.52999999999997, -11.03], [-64.75, -10.5], [-64.52999999999997, -9.97], [-64.0, -9.75], [-63.75, -9.85], [-63.68000000000001, -9.82], [-63.52999999999997, -9.47], [-63.0, -9.25], [-62.47000000000003, -9.47], [-62.25, -10.0], [-62.47000000000003, -10.53], [-62.81999999999999, -10.68], [-62.97000000000003, -11.03], [-63.5, -11.25], [-63.75, -11.15], [-64.0, -11.25], [-64.52999999999997, -11.03]]]]}, "2022-02-22T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.75, -12.0], [-62.52999999999997, -11.47], [-62.18000000000001, -11.32], [-62.02999999999997, -10.97], [-61.5, -10.75], [-60.97000000000003, -10.97], [-60.81999999999999, -11.32], [-60.47000000000003, -11.47], [-60.25, -12.0], [-60.47000000000003, -12.53], [-60.81999999999999, -12.68], [-60.97000000000003, -13.03], [-61.5, -13.25], [-62.02999999999997, -13.03], [-62.18000000000001, -12.68], [-62.52999999999997, -12.53], [-62.75, -12.0]]], [[[-64.52999999999997, -11.03], [-64.75, -10.5], [-64.52999999999997, -9.97], [-64.0, -9.75], [-63.75, -9.85], [-63.68000000000001, -9.82], [-63.52999999999997, -9.47], [-63.0, -9.25], [-62.47000000000003, -9.47], [-62.25, -10.0], [-62.47000000000003, -10.53], [-62.81999999999999, -10.68], [-62.97000000000003, -11.03], [-63.5, -11.25], [-63.75, -11.15], [-64.0, -11.25], [-64.52999999999997, -11.03]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.6084438499997304}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.4479704239909665}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.744251735274247, 23.662310007231383, 23.11334449484616, 23.294577531918037, 23.13826823798547]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.310498377952, 22.780786278425637, 22.2954953048706, 22.564249668786147, 22.455817569254236]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3061335735140136, -1.2860154071558103, -1.74098501501945, -1.2580329515565465, -1.4926228226735745]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5426119363180533, -1.6919948746565865, -2.6084438499997304, -1.5495585570515118, -1.903718037804424]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3692248982472226, -1.4150611886420175, -1.9913398917331873, -1.4691657153962874, -1.8064144063909564]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.581843139332649, -1.9468349017417685, -3.1628463363287804, -1.8235151823359774, -2.3292497792481837]}}