{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:22:18.304465", "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-Aug-20_to_2022-Aug-23_317.0_-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": 2022080000849}, "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": "August 20 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 23 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": 123270.57740109142}, "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": 317.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "317.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 315.0}, "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": -6.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -3.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-44.75, -3.85], [-44.68, -3.82], [-44.65, -3.75], [-44.75, -3.5], [-44.53, -2.97], [-44.18, -2.82], [-44.03, -2.47], [-43.5, -2.25], [-42.97, -2.47], [-42.82, -2.82], [-42.75, -2.85], [-42.5, -2.75], [-42.25, -2.85], [-42.18, -2.82], [-42.03, -2.47], [-41.5, -2.25], [-41.25, -2.35], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-39.97, -2.47], [-39.82, -2.82], [-39.47, -2.97], [-39.25, -3.5], [-39.35, -3.75], [-39.25, -4.0], [-39.47, -4.53], [-40.0, -4.75], [-40.53, -4.53], [-40.68, -4.18], [-40.8, -4.12], [-40.97, -4.53], [-41.32, -4.68], [-41.35, -4.75], [-41.32, -4.82], [-40.97, -4.97], [-40.75, -5.5], [-40.85, -5.75], [-40.75, -6.0], [-40.97, -6.53], [-41.5, -6.75], [-41.75, -6.65], [-42.0, -6.75], [-42.25, -6.65], [-42.5, -6.75], [-43.03, -6.53], [-43.18, -6.18], [-43.53, -6.03], [-43.68, -5.68], [-43.75, -5.65], [-44.0, -5.75], [-44.25, -5.65], [-44.5, -5.75], [-44.75, -5.65], [-45.0, -5.75], [-45.53, -5.53], [-45.75, -5.0], [-45.65, -4.75], [-45.75, -4.5], [-45.53, -3.97], [-45.0, -3.75], [-44.75, -3.85]]]]}}, "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": {"2022-08-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-44.75, -3.5], [-44.52999999999997, -2.97], [-44.18000000000001, -2.82], [-44.02999999999997, -2.47], [-43.5, -2.25], [-42.97000000000003, -2.47], [-42.81999999999999, -2.82], [-42.75, -2.85], [-42.5, -2.75], [-42.25, -2.85], [-42.18000000000001, -2.82], [-42.02999999999997, -2.47], [-41.5, -2.25], [-41.25, -2.35], [-41.0, -2.25], [-40.75, -2.35], [-40.5, -2.25], [-39.97000000000003, -2.47], [-39.81999999999999, -2.82], [-39.47000000000003, -2.97], [-39.25, -3.5], [-39.35000000000002, -3.75], [-39.25, -4.0], [-39.47000000000003, -4.53], [-40.0, -4.75], [-40.52999999999997, -4.53], [-40.68000000000001, -4.18], [-40.80000000000001, -4.12], [-40.97000000000003, -4.53], [-41.31999999999999, -4.68], [-41.35000000000002, -4.75], 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"description": "The daily evolution of maximum t2m.", "value": [25.87545944581649, 25.63578591382759, 25.259704666314633, 26.368330408150825]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.2784259673068377, -1.624296577236943, -2.2169685564279717, -1.268631273945259]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9003022950112154, -2.4475435606765927, -3.157230631007053, -1.6198305997755256]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6786749087866493, -2.19974109578752, -3.0708613953726767, -1.723014864973785]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.3673098684944502, -3.0708410142512794, -4.279173744326419, -2.182907512590289]}}