{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:42.720572", "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-Jan-07_to_2022-Jan-09_298.5_-5.0"}, "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": 2022010000378}, "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": "January 07 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 09 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": 95416.12943252725}, "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": -5.0}, "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": 298.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "298.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 298.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 303.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-61.5, -3.75], [-60.97, -3.97], [-60.82, -4.32], [-60.75, -4.35], [-60.5, -4.25], [-60.25, -4.35], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.25, -4.35], [-59.18, -4.32], [-59.03, -3.97], [-58.5, -3.75], [-58.25, -3.85], [-58.18, -3.82], [-58.03, -3.47], [-57.5, -3.25], [-57.25, -3.35], [-57.0, -3.25], [-56.47, -3.47], [-56.25, -4.0], [-56.35, -4.25], [-56.25, -4.5], [-56.35, -4.75], [-56.25, -5.0], [-56.47, -5.53], [-56.82, -5.68], [-56.97, -6.03], [-57.5, -6.25], [-57.75, -6.15], [-58.0, -6.25], [-58.5, -6.04], [-58.82, -6.18], [-58.85, -6.25], [-58.75, -6.5], [-58.97, -7.03], [-59.5, -7.25], [-59.75, -7.15], [-60.0, -7.25], [-60.25, -7.15], [-60.5, -7.25], [-61.03, -7.03], [-61.18, -6.68], [-61.53, -6.53], [-61.75, -6.0], [-61.65, -5.75], [-61.68, -5.68], [-62.03, -5.53], [-62.25, -5.0], [-62.15, -4.75], [-62.25, -4.5], [-62.03, -3.97], [-61.5, -3.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -4.5], [-62.02999999999997, -3.97], [-61.5, -3.75], [-60.97000000000003, -3.97], [-60.81999999999999, -4.32], [-60.75, -4.35], [-60.5, -4.25], [-60.25, -4.35], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.25, -4.35], [-59.18000000000001, -4.32], [-59.02999999999997, -3.97], [-58.5, -3.75], [-58.25, -3.85], [-58.18000000000001, -3.82], [-58.02999999999997, -3.47], [-57.5, -3.25], [-57.25, -3.35], [-57.0, -3.25], [-56.47000000000003, -3.47], [-56.25, -4.0], [-56.35000000000002, -4.25], [-56.25, -4.5], [-56.35000000000002, -4.75], [-56.25, -5.0], [-56.47000000000003, -5.53], [-56.81999999999999, -5.68], [-56.97000000000003, -6.03], [-57.5, -6.25], [-57.75, -6.15], [-58.0, -6.25], [-58.5, -6.04], [-58.81999999999999, -6.18], [-58.85000000000002, -6.25], [-58.75, -6.5], [-58.97000000000003, -7.03], [-59.5, -7.25], [-59.75, -7.15], [-60.0, -7.25], [-60.25, -7.15], [-60.5, -7.25], [-61.02999999999997, -7.03], [-61.18000000000001, -6.68], [-61.52999999999997, -6.53], [-61.75, -6.0], [-61.64999999999998, -5.75], [-61.68000000000001, -5.68], [-62.02999999999997, -5.53], [-62.25, -5.0], [-62.14999999999998, -4.75], [-62.25, -4.5]]]]}, "2022-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -4.5], [-62.02999999999997, -3.97], [-61.5, -3.75], [-60.97000000000003, -3.97], [-60.81999999999999, -4.32], [-60.75, -4.35], [-60.5, -4.25], [-60.25, -4.35], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.25, -4.35], [-59.18000000000001, -4.32], [-59.02999999999997, -3.97], [-58.5, -3.75], [-58.25, -3.85], [-58.18000000000001, -3.82], [-58.02999999999997, -3.47], [-57.5, -3.25], [-57.25, -3.35], [-57.0, -3.25], [-56.47000000000003, -3.47], [-56.25, -4.0], [-56.35000000000002, -4.25], [-56.25, -4.5], [-56.35000000000002, -4.75], [-56.25, -5.0], [-56.47000000000003, -5.53], [-56.81999999999999, -5.68], [-56.97000000000003, -6.03], [-57.5, -6.25], [-57.75, -6.15], [-58.0, -6.25], [-58.5, -6.04], [-58.81999999999999, -6.18], [-58.85000000000002, -6.25], [-58.75, -6.5], [-58.97000000000003, -7.03], [-59.5, -7.25], [-59.75, -7.15], [-60.0, -7.25], [-60.25, -7.15], [-60.5, -7.25], [-61.02999999999997, -7.03], [-61.18000000000001, -6.68], [-61.52999999999997, -6.53], [-61.75, -6.0], [-61.64999999999998, -5.75], [-61.68000000000001, -5.68], [-62.02999999999997, -5.53], [-62.25, -5.0], [-62.14999999999998, -4.75], [-62.25, -4.5]]]]}, "2022-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.25, -4.5], [-62.02999999999997, -3.97], [-61.5, -3.75], [-60.97000000000003, -3.97], [-60.81999999999999, -4.32], [-60.75, -4.35], [-60.5, -4.25], [-60.25, -4.35], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.25, -4.35], [-59.18000000000001, -4.32], [-59.02999999999997, -3.97], [-58.5, -3.75], [-58.25, -3.85], [-58.18000000000001, -3.82], [-58.02999999999997, -3.47], [-57.5, -3.25], [-57.25, -3.35], [-57.0, -3.25], [-56.47000000000003, -3.47], [-56.25, -4.0], [-56.35000000000002, -4.25], [-56.25, -4.5], [-56.35000000000002, -4.75], [-56.25, -5.0], [-56.47000000000003, -5.53], [-56.81999999999999, -5.68], [-56.97000000000003, -6.03], [-57.5, -6.25], [-57.75, -6.15], [-58.0, -6.25], [-58.5, -6.04], [-58.81999999999999, -6.18], [-58.85000000000002, -6.25], [-58.75, -6.5], [-58.97000000000003, -7.03], [-59.5, -7.25], [-59.75, -7.15], [-60.0, -7.25], [-60.25, -7.15], [-60.5, -7.25], [-61.02999999999997, -7.03], [-61.18000000000001, -6.68], [-61.52999999999997, -6.53], [-61.75, -6.0], [-61.64999999999998, -5.75], [-61.68000000000001, -5.68], [-62.02999999999997, -5.53], [-62.25, -5.0], [-62.14999999999998, -4.75], [-62.25, -4.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4140774924046013}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.5241974070467814}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.38307103450171, 24.18876311489953, 24.192855004402645]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.941129481451412, 23.291166058615772, 23.604221835669648]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3960563394441854, -1.5978014072615254, -1.5787344744346334]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.5901583351721342, -2.4140774924046013, -2.0087091596900564]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4390127303663496, -1.5892006779392889, -1.6324010722283222]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7387708770751928, -2.0059080407196053, -2.3625416571634665]}}