{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:14:21.686246", "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-23_to_2021-Oct-28_294.0_-24.0"}, "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": 2021100000792}, "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 23 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 28 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 100020.12904822863}, "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": ["Argentina", "Bolivia, Plurinational State of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": -24.0}, "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": 294.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "294.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 293.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 295.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -26.5}, "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": [[[[-67.65, -25.25], [-67.75, -25.0], [-67.53, -24.47], [-67.18, -24.32], [-67.15, -24.25], [-67.25, -24.0], [-67.15, -23.75], [-67.25, -23.5], [-67.15, -23.25], [-67.25, -23.0], [-67.15, -22.75], [-67.25, -22.5], [-67.15, -22.25], [-67.25, -22.0], [-67.15, -21.75], [-67.25, -21.5], [-67.03, -20.97], [-66.68, -20.82], [-66.54, -20.5], [-66.75, -20.0], [-66.65, -19.75], [-66.68, -19.68], [-66.75, -19.65], [-67.0, -19.75], [-67.53, -19.53], [-67.75, -19.0], [-67.53, -18.47], [-67.0, -18.25], [-66.75, -18.35], [-66.5, -18.25], [-66.25, -18.35], [-66.0, -18.25], [-65.75, -18.35], [-65.5, -18.25], [-64.97, -18.47], [-64.75, -19.0], [-64.87, -19.3], [-64.47, -19.47], [-64.25, -20.0], [-64.35, -20.25], [-64.25, -20.5], [-64.47, -21.03], [-64.82, -21.18], [-64.85, -21.25], [-64.75, -21.5], [-64.85, -21.75], [-64.75, -22.0], [-64.85, -22.25], [-64.75, -22.5], [-64.85, -22.75], [-64.75, -23.0], [-64.85, -23.25], [-64.75, -23.5], [-64.97, -24.03], [-65.32, -24.18], [-65.35, -24.25], [-65.25, -24.5], [-65.47, -25.03], [-65.82, -25.18], [-65.97, -25.53], [-66.32, -25.68], [-66.35, -25.75], [-66.25, -26.0], [-66.35, -26.25], [-66.25, -26.5], [-66.47, -27.03], [-67.0, -27.25], [-67.53, -27.03], [-67.75, -26.5], [-67.65, -26.25], [-67.75, -26.0], [-67.65, -25.75], [-67.75, -25.5], [-67.65, -25.25]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon", "S.W.South-America", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-10-23T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.75, -26.0], [-67.64999999999998, -25.75], [-67.75, -25.5], [-67.64999999999998, -25.25], [-67.75, -25.0], [-67.52999999999997, -24.47], [-67.18, -24.32], [-67.14999999999998, -24.25], [-67.25, -24.0], [-67.14999999999998, -23.75], [-67.25, -23.5], [-67.02999999999997, -22.97], [-66.5, -22.75], [-65.97000000000003, -22.97], [-65.82, -23.32], [-65.47000000000003, -23.47], [-65.25, -24.0], [-65.47000000000003, -24.53], [-65.82, -24.68], [-65.85000000000002, -24.75], [-65.75, -25.0], [-65.97000000000003, -25.53], [-66.32, -25.68], [-66.35000000000002, -25.75], [-66.25, -26.0], [-66.35000000000002, -26.25], [-66.25, -26.5], [-66.47000000000003, -27.03], [-67.0, -27.25], [-67.52999999999997, -27.03], [-67.75, -26.5], [-67.64999999999998, -26.25], [-67.75, -26.0]]]]}, "2021-10-24T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.75, -26.0], [-67.64999999999998, -25.75], [-67.75, -25.5], [-67.64999999999998, -25.25], [-67.75, -25.0], [-67.52999999999997, -24.47], [-67.18, -24.32], [-67.14999999999998, -24.25], [-67.25, -24.0], [-67.14999999999998, -23.75], [-67.25, -23.5], [-67.14999999999998, -23.25], [-67.25, -23.0], [-67.14999999999998, -22.75], [-67.25, -22.5], [-67.14999999999998, -22.25], [-67.25, -22.0], [-67.14999999999998, -21.75], [-67.25, -21.5], [-67.02999999999997, -20.97], [-66.5, -20.75], [-66.25, -20.85], [-66.18, -20.82], [-66.14999999999998, -20.75], [-66.25, -20.5], [-66.02999999999997, -19.97], [-65.68, -19.82], [-65.62, -19.7], [-66.02999999999997, -19.53], [-66.25, -19.0], [-66.02999999999997, -18.47], [-65.5, -18.25], [-64.97000000000003, -18.47], [-64.75, -19.0], [-64.87, -19.3], [-64.47000000000003, -19.47], [-64.25, -20.0], [-64.35000000000002, -20.25], [-64.25, -20.5], [-64.47000000000003, -21.03], [-64.82, -21.18], [-64.85000000000002, -21.25], [-64.75, -21.5], [-64.85000000000002, -21.75], [-64.75, -22.0], [-64.85000000000002, -22.25], [-64.75, -22.5], [-64.85000000000002, -22.75], [-64.75, -23.0], [-64.85000000000002, -23.25], [-64.75, -23.5], [-64.97000000000003, -24.03], [-65.32, -24.18], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.97000000000003, -25.53], [-66.32, -25.68], [-66.35000000000002, -25.75], [-66.25, -26.0], [-66.35000000000002, -26.25], [-66.25, -26.5], [-66.47000000000003, -27.03], [-67.0, -27.25], [-67.52999999999997, -27.03], [-67.75, -26.5], [-67.64999999999998, -26.25], [-67.75, -26.0]]]]}, "2021-10-25T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.75, -26.0], [-67.64999999999998, -25.75], [-67.75, -25.5], [-67.64999999999998, -25.25], [-67.75, -25.0], [-67.52999999999997, -24.47], [-67.18, -24.32], [-67.14999999999998, -24.25], [-67.25, -24.0], [-67.14999999999998, -23.75], [-67.25, -23.5], [-67.14999999999998, -23.25], [-67.25, -23.0], [-67.14999999999998, -22.75], [-67.25, -22.5], [-67.14999999999998, -22.25], [-67.25, -22.0], [-67.14999999999998, -21.75], [-67.25, -21.5], [-67.02999999999997, -20.97], [-66.68, -20.82], [-66.54000000000002, -20.5], [-66.75, -20.0], [-66.64999999999998, -19.75], [-66.68, -19.68], [-66.75, -19.65], [-67.0, -19.75], [-67.52999999999997, -19.53], [-67.75, -19.0], [-67.52999999999997, -18.47], [-67.0, -18.25], [-66.75, -18.35], [-66.5, -18.25], [-66.25, -18.35], [-66.0, -18.25], [-65.75, -18.35], [-65.5, -18.25], [-64.97000000000003, -18.47], [-64.75, -19.0], [-64.87, -19.3], [-64.47000000000003, -19.47], [-64.25, -20.0], [-64.35000000000002, -20.25], [-64.25, -20.5], [-64.47000000000003, -21.03], [-64.82, -21.18], [-64.85000000000002, -21.25], [-64.75, -21.5], [-64.85000000000002, -21.75], [-64.75, -22.0], [-64.85000000000002, -22.25], [-64.75, -22.5], [-64.85000000000002, -22.75], [-64.75, -23.0], [-64.85000000000002, -23.25], [-64.75, -23.5], [-64.97000000000003, -24.03], [-65.32, -24.18], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.97000000000003, -25.53], [-66.32, -25.68], [-66.35000000000002, -25.75], [-66.25, -26.0], [-66.35000000000002, -26.25], [-66.25, -26.5], [-66.47000000000003, -27.03], [-67.0, -27.25], [-67.52999999999997, -27.03], [-67.75, -26.5], [-67.64999999999998, -26.25], [-67.75, -26.0]]]]}, "2021-10-26T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.75, -25.5], [-67.64999999999998, -25.25], [-67.75, -25.0], [-67.52999999999997, -24.47], [-67.18, -24.32], [-67.14999999999998, -24.25], [-67.25, -24.0], [-67.14999999999998, -23.75], [-67.25, -23.5], [-67.14999999999998, -23.25], [-67.25, -23.0], [-67.14999999999998, -22.75], [-67.25, -22.5], [-67.14999999999998, -22.25], [-67.25, -22.0], [-67.14999999999998, -21.75], [-67.25, -21.5], [-67.02999999999997, -20.97], [-66.68, -20.82], [-66.54000000000002, -20.5], [-66.75, -20.0], [-66.64999999999998, -19.75], [-66.68, -19.68], [-66.75, -19.65], [-67.0, -19.75], [-67.52999999999997, -19.53], [-67.75, -19.0], [-67.52999999999997, -18.47], [-67.0, -18.25], [-66.75, -18.35], [-66.5, -18.25], [-66.25, -18.35], [-66.0, -18.25], [-65.75, -18.35], [-65.5, -18.25], [-64.97000000000003, -18.47], [-64.75, -19.0], [-64.87, -19.3], [-64.47000000000003, -19.47], [-64.25, -20.0], [-64.35000000000002, -20.25], [-64.25, -20.5], [-64.47000000000003, -21.03], [-64.82, -21.18], [-64.85000000000002, -21.25], [-64.75, -21.5], [-64.85000000000002, -21.75], [-64.75, -22.0], [-64.85000000000002, -22.25], [-64.75, -22.5], [-64.85000000000002, -22.75], [-64.75, -23.0], [-64.85000000000002, -23.25], [-64.75, -23.5], [-64.97000000000003, -24.03], [-65.32, -24.18], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.97000000000003, -25.53], [-66.32, -25.68], [-66.35000000000002, -25.75], [-66.25, -26.0], [-66.47000000000003, -26.53], [-67.0, -26.75], [-67.52999999999997, -26.53], [-67.75, -26.0], [-67.64999999999998, -25.75], [-67.75, -25.5]]]]}, "2021-10-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.25, -25.0], [-67.02999999999997, -24.47], [-66.68, -24.32], [-66.64999999999998, -24.25], [-66.75, -24.0], [-66.64999999999998, -23.75], [-66.75, -23.5], [-66.64999999999998, -23.25], [-66.68, -23.18], [-67.02999999999997, -23.03], [-67.25, -22.5], [-67.04000000000002, -22.0], [-67.25, -21.5], [-67.02999999999997, -20.97], [-66.68, -20.82], [-66.54000000000002, -20.5], [-66.75, -20.0], [-66.64999999999998, -19.75], [-66.68, -19.68], [-66.75, -19.65], [-67.0, -19.75], [-67.52999999999997, -19.53], [-67.75, -19.0], [-67.52999999999997, -18.47], [-67.0, -18.25], [-66.75, -18.35], [-66.5, -18.25], [-66.25, -18.35], [-66.0, -18.25], [-65.47000000000003, -18.47], [-65.25, -19.0], [-65.35000000000002, -19.25], [-65.25, -19.5], [-65.35000000000002, -19.75], [-65.32, -19.82], [-64.97000000000003, -19.97], [-64.75, -20.5], [-64.97000000000003, -21.03], [-65.32, -21.18], [-65.35000000000002, -21.25], [-65.32, -21.32], [-64.97000000000003, -21.47], [-64.75, -22.0], [-64.85000000000002, -22.25], [-64.75, -22.5], [-64.85000000000002, -22.75], [-64.75, -23.0], [-64.97000000000003, -23.53], [-65.32, -23.68], [-65.35000000000002, -23.75], [-65.25, -24.0], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.97000000000003, -25.53], [-66.37, -25.7], [-66.25, -26.0], [-66.47000000000003, -26.53], [-67.0, -26.75], [-67.52999999999997, -26.53], [-67.75, -26.0], [-67.52999999999997, -25.47], [-67.12, -25.3], [-67.25, -25.0]]]]}, "2021-10-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-66.75, -24.0], [-66.64999999999998, -23.75], [-66.75, -23.5], [-66.52999999999997, -22.97], [-66.0, -22.75], [-65.47000000000003, -22.97], [-65.25, -23.5], [-65.35000000000002, -23.75], [-65.25, -24.0], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-66.0, -25.25], [-66.52999999999997, -25.03], [-66.75, -24.5], [-66.64999999999998, -24.25], [-66.75, -24.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -4.864372977000244}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.349516872945279}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [4.535574863376041, 6.979518334285558, 6.952306848113778, 7.420843284996181, 8.088366218398619, 8.48744099693971]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [0.006492054056423058, -1.192626555750337, 0.5208413094692901, -0.027260467757571405, 0.3101894099330593, 6.720380957946759]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.0145356387460476, -3.5332190933490226, -3.7027711480121686, -3.3054932176397207, -2.797421215374952, -2.820976932315034]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-3.7860105797680603, -4.864372977000244, -4.777982100080067, -4.493177895640031, -3.5853559285790766, -3.373181003758077]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.616218009966436, -2.052781948525653, -2.2127555773437355, -1.8607502285496935, -1.5447281296999982, -1.3460842523651273]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.884112707749539, -2.6636252470089548, -2.9102486247705093, -2.428698447658445, -1.9396341296965283, -1.4387389706729115]}}