{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:51:42.784129", "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-Mar-12_to_2023-Mar-14_299.5_-5.5"}, "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": 2023030000421}, "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": "March 12 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 14 2023"}, "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": 107455.59140310435}, "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": -5.5}, "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": 299.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "299.5\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": 302.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -8.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -5.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-62.03, -5.47], [-61.5, -5.25], [-61.25, -5.35], [-61.18, -5.32], [-61.03, -4.97], [-60.68, -4.82], [-60.53, -4.47], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.0, -4.46], [-58.5, -4.25], [-57.97, -4.47], [-57.75, -5.0], [-57.96, -5.5], [-57.75, -6.0], [-57.85, -6.25], [-57.82, -6.32], [-57.47, -6.47], [-57.25, -7.0], [-57.35, -7.25], [-57.25, -7.5], [-57.47, -8.03], [-58.0, -8.25], [-58.25, -8.15], [-58.32, -8.18], [-58.35, -8.25], [-58.25, -8.5], [-58.47, -9.03], [-59.0, -9.25], [-59.25, -9.15], [-59.5, -9.25], [-60.03, -9.03], [-60.18, -8.68], [-60.53, -8.53], [-60.75, -8.0], [-60.62, -7.7], [-61.03, -7.53], [-61.18, -7.18], [-61.53, -7.03], [-61.68, -6.68], [-62.03, -6.53], [-62.25, -6.0], [-62.03, -5.47]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America", "South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2023-03-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.02999999999997, -6.53], [-62.25, -6.0], [-62.02999999999997, -5.47], [-61.5, -5.25], [-61.25, -5.35], [-61.18000000000001, -5.32], [-61.02999999999997, -4.97], [-60.68000000000001, -4.82], [-60.52999999999997, -4.47], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.0, -4.46], [-58.5, -4.25], [-57.97000000000003, -4.47], [-57.75, -5.0], [-57.95999999999998, -5.5], [-57.75, -6.0], [-57.85000000000002, -6.25], [-57.81999999999999, -6.32], [-57.47000000000003, -6.47], [-57.25, -7.0], [-57.35000000000002, -7.25], [-57.25, -7.5], [-57.47000000000003, -8.03], [-58.0, -8.25], [-58.25, -8.15], [-58.31999999999999, -8.18], [-58.35000000000002, -8.25], [-58.25, -8.5], [-58.47000000000003, -9.03], [-59.0, -9.25], [-59.25, -9.15], [-59.5, -9.25], [-60.02999999999997, -9.03], [-60.18000000000001, -8.68], [-60.52999999999997, -8.53], [-60.75, -8.0], [-60.620000000000005, -7.7], [-61.02999999999997, -7.53], [-61.18000000000001, -7.18], [-61.52999999999997, -7.03], [-61.68000000000001, -6.68], [-62.02999999999997, -6.53]]]]}, "2023-03-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.02999999999997, -6.53], [-62.25, -6.0], [-62.02999999999997, -5.47], [-61.5, -5.25], [-61.25, -5.35], [-61.18000000000001, -5.32], [-61.02999999999997, -4.97], [-60.68000000000001, -4.82], [-60.52999999999997, -4.47], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.0, -4.46], [-58.5, -4.25], [-57.97000000000003, -4.47], [-57.75, -5.0], [-57.95999999999998, -5.5], [-57.75, -6.0], [-57.85000000000002, -6.25], [-57.81999999999999, -6.32], [-57.47000000000003, -6.47], [-57.25, -7.0], [-57.35000000000002, -7.25], [-57.25, -7.5], [-57.47000000000003, -8.03], [-58.0, -8.25], [-58.25, -8.15], [-58.31999999999999, -8.18], [-58.35000000000002, -8.25], [-58.25, -8.5], [-58.47000000000003, -9.03], [-59.0, -9.25], [-59.25, -9.15], [-59.5, -9.25], [-60.02999999999997, -9.03], [-60.18000000000001, -8.68], [-60.52999999999997, -8.53], [-60.75, -8.0], [-60.620000000000005, -7.7], [-61.02999999999997, -7.53], [-61.18000000000001, -7.18], [-61.52999999999997, -7.03], [-61.68000000000001, -6.68], [-62.02999999999997, -6.53]]]]}, "2023-03-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-62.02999999999997, -6.53], [-62.25, -6.0], [-62.02999999999997, -5.47], [-61.5, -5.25], [-61.25, -5.35], [-61.18000000000001, -5.32], [-61.02999999999997, -4.97], [-60.68000000000001, -4.82], [-60.52999999999997, -4.47], [-60.0, -4.25], [-59.75, -4.35], [-59.5, -4.25], [-59.0, -4.46], [-58.5, -4.25], [-57.97000000000003, -4.47], [-57.75, -5.0], [-57.95999999999998, -5.5], [-57.75, -6.0], [-57.85000000000002, -6.25], [-57.81999999999999, -6.32], [-57.47000000000003, -6.47], [-57.25, -7.0], [-57.35000000000002, -7.25], [-57.25, -7.5], [-57.47000000000003, -8.03], [-58.0, -8.25], [-58.25, -8.15], [-58.31999999999999, -8.18], [-58.35000000000002, -8.25], [-58.25, -8.5], [-58.47000000000003, -9.03], [-59.0, -9.25], [-59.25, -9.15], [-59.5, -9.25], [-60.02999999999997, -9.03], [-60.18000000000001, -8.68], [-60.52999999999997, -8.53], [-60.75, -8.0], [-60.620000000000005, -7.7], [-61.02999999999997, -7.53], [-61.18000000000001, -7.18], [-61.52999999999997, -7.03], [-61.68000000000001, -6.68], [-62.02999999999997, -6.53]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.3075993173483766}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.33755197877763}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.265389384348794, 24.41079847901949, 24.29942581532856]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.74810410271789, 23.771297565037855, 23.692607963269495]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4098992597256483, -1.2516377123766704, -1.3511189642305712]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.3075993173483766, -1.4752388138506376, -1.8042747310501]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6638432669169205, -1.553001369990331, -1.6523206683985128]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.5438172176967946, -1.9643790321641281, -2.1557175363179533]}}