{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:17.788226", "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": "2021-Oct-19_to_2021-Oct-21_308.5_-20.0"}, "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": 2021100000651}, "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": "October 19 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 21 2021"}, "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": 58256.00399202685}, "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": -20.0}, "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": 308.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "308.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 308.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 312.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -19.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-52.75, -19.5], [-52.53, -18.97], [-52.18, -18.82], [-52.03, -18.47], [-51.5, -18.25], [-51.25, -18.35], [-51.0, -18.25], [-50.75, -18.35], [-50.5, -18.25], [-50.25, -18.35], [-50.0, -18.25], [-49.75, -18.35], [-49.5, -18.25], [-48.97, -18.47], [-48.82, -18.82], [-48.75, -18.85], [-48.5, -18.75], [-48.25, -18.85], [-48.0, -18.75], [-47.47, -18.97], [-47.25, -19.5], [-47.35, -19.75], [-47.25, -20.0], [-47.47, -20.53], [-48.0, -20.75], [-48.25, -20.65], [-48.5, -20.75], [-48.75, -20.65], [-49.0, -20.75], [-49.53, -20.53], [-49.68, -20.18], [-49.75, -20.15], [-50.0, -20.25], [-50.25, -20.15], [-50.5, -20.25], [-50.75, -20.15], [-50.82, -20.18], [-50.97, -20.53], [-51.32, -20.68], [-51.47, -21.03], [-52.0, -21.25], [-52.53, -21.03], [-52.75, -20.5], [-52.65, -20.25], [-52.75, -20.0], [-52.65, -19.75], [-52.75, -19.5]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "South-American-Monsoon", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, -20.0], [-52.64999999999998, -19.75], [-52.75, -19.5], [-52.52999999999997, -18.97], [-52.18000000000001, -18.82], [-52.02999999999997, -18.47], [-51.5, -18.25], [-51.25, -18.35], [-51.0, -18.25], [-50.75, -18.35], [-50.5, -18.25], [-50.25, -18.35], [-50.0, -18.25], [-49.75, -18.35], [-49.5, -18.25], [-48.97000000000003, -18.47], [-48.81999999999999, -18.82], [-48.75, -18.85], [-48.5, -18.75], [-48.25, -18.85], [-48.0, -18.75], [-47.47000000000003, -18.97], [-47.25, -19.5], [-47.35000000000002, -19.75], [-47.25, -20.0], [-47.47000000000003, -20.53], [-48.0, -20.75], [-48.25, -20.65], [-48.5, -20.75], [-48.75, -20.65], [-49.0, -20.75], [-49.52999999999997, -20.53], [-49.68000000000001, -20.18], [-49.75, -20.15], [-50.0, -20.25], [-50.25, -20.15], [-50.5, -20.25], [-50.75, -20.15], [-50.81999999999999, -20.18], [-50.97000000000003, -20.53], [-51.31999999999999, -20.68], [-51.47000000000003, -21.03], [-52.0, -21.25], [-52.52999999999997, -21.03], [-52.75, -20.5], [-52.64999999999998, -20.25], [-52.75, -20.0]]]]}, "2021-10-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, -20.0], [-52.64999999999998, -19.75], [-52.75, -19.5], [-52.52999999999997, -18.97], [-52.18000000000001, -18.82], [-52.02999999999997, -18.47], [-51.5, -18.25], [-51.25, -18.35], [-51.0, -18.25], [-50.75, -18.35], [-50.5, -18.25], [-50.25, -18.35], [-50.0, -18.25], [-49.75, -18.35], [-49.5, -18.25], [-48.97000000000003, -18.47], [-48.81999999999999, -18.82], [-48.75, -18.85], [-48.5, -18.75], [-48.25, -18.85], [-48.0, -18.75], [-47.47000000000003, -18.97], [-47.25, -19.5], [-47.35000000000002, -19.75], [-47.25, -20.0], [-47.47000000000003, -20.53], [-48.0, -20.75], [-48.25, -20.65], [-48.5, -20.75], [-48.75, -20.65], [-49.0, -20.75], [-49.52999999999997, -20.53], [-49.68000000000001, -20.18], [-49.75, -20.15], [-50.0, -20.25], [-50.25, -20.15], [-50.5, -20.25], [-50.75, -20.15], [-50.81999999999999, -20.18], [-50.97000000000003, -20.53], [-51.31999999999999, -20.68], [-51.47000000000003, -21.03], [-52.0, -21.25], [-52.52999999999997, -21.03], [-52.75, -20.5], [-52.64999999999998, -20.25], [-52.75, -20.0]]]]}, "2021-10-21T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-52.75, -20.0], [-52.64999999999998, -19.75], [-52.75, -19.5], [-52.52999999999997, -18.97], [-52.18000000000001, -18.82], [-52.02999999999997, -18.47], [-51.5, -18.25], [-51.25, -18.35], [-51.0, -18.25], [-50.75, -18.35], [-50.5, -18.25], [-50.25, -18.35], [-50.0, -18.25], [-49.75, -18.35], [-49.5, -18.25], [-48.97000000000003, -18.47], [-48.81999999999999, -18.82], [-48.75, -18.85], [-48.5, -18.75], [-48.25, -18.85], [-48.0, -18.75], [-47.47000000000003, -18.97], [-47.25, -19.5], [-47.35000000000002, -19.75], [-47.25, -20.0], [-47.47000000000003, -20.53], [-48.0, -20.75], [-48.25, -20.65], [-48.5, -20.75], [-48.75, -20.65], [-49.0, -20.75], [-49.52999999999997, -20.53], [-49.68000000000001, -20.18], [-49.75, -20.15], [-50.0, -20.25], [-50.25, -20.15], [-50.5, -20.25], [-50.75, -20.15], [-50.81999999999999, -20.18], [-50.97000000000003, -20.53], [-51.31999999999999, -20.68], [-51.47000000000003, -21.03], [-52.0, -21.25], [-52.52999999999997, -21.03], [-52.75, -20.5], [-52.64999999999998, -20.25], [-52.75, -20.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.7399515547658098}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.09524416696819}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.31266863906194, 23.00978496005058, 23.263105923715045]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.057518002996176, 21.43437093628671, 21.448986983679447]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.1560379545719, -3.242533954392337, -2.887160591940332]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.574848989819543, -3.7399515547658098, -3.296584992483531]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3459504715823785, -1.4417072133271962, -1.3584196685556287]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4599182905954189, -1.6626909659312217, -1.528192743075794]}}