{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:50:10.396409", "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-Jan-04_to_2023-Jan-11_293.5_-25.0"}, "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": 2023010000272}, "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 04 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 11 2023"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 8}, "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": 122136.64434971879}, "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": -25.0}, "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": 293.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.0}, "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": -27.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -18.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-67.68, -24.82], [-67.54, -24.5], [-67.75, -24.0], [-67.53, -23.47], [-67.18, -23.32], [-67.15, -23.25], [-67.25, -23.0], [-67.15, -22.75], [-67.18, -22.68], [-67.53, -22.53], [-67.68, -22.18], [-68.03, -22.03], [-68.25, -21.5], [-68.03, -20.97], [-67.5, -20.75], [-67.0, -20.96], [-66.68, -20.82], [-66.65, -20.75], [-66.75, -20.5], [-66.65, -20.25], [-66.75, -20.0], [-66.54, -19.5], [-66.68, -19.18], [-67.03, -19.03], [-67.25, -18.5], [-67.03, -17.97], [-66.5, -17.75], [-65.97, -17.97], [-65.82, -18.32], [-65.47, -18.47], [-65.32, -18.82], [-64.97, -18.97], [-64.82, -19.32], [-64.47, -19.47], [-64.25, -20.0], [-64.35, -20.25], [-64.25, -20.5], [-64.47, -21.03], [-65.0, -21.25], [-64.47, -21.47], [-64.25, -22.0], [-64.47, -22.53], [-64.82, -22.68], [-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], [-65.85, -25.25], [-65.75, -25.5], [-65.85, -25.75], [-65.75, -26.0], [-65.85, -26.25], [-65.75, -26.5], [-65.97, -27.03], [-66.32, -27.18], [-66.47, -27.53], [-67.0, -27.75], [-67.53, -27.53], [-67.68, -27.18], [-68.03, -27.03], [-68.25, -26.5], [-68.15, -26.25], [-68.18, -26.18], [-68.53, -26.03], [-68.75, -25.5], [-68.53, -24.97], [-68.0, -24.75], [-67.75, -24.85], [-67.68, -24.82]], [[-65.3, -21.12], [-65.35, -21.25], [-65.32, -21.32], [-65.25, -21.35], [-65.0, -21.25], [-65.3, -21.12]]]]}}, "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": {"2023-01-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.02999999999997, -26.03], [-68.25, -25.5], [-68.02999999999997, -24.97], [-67.68, -24.82], [-67.54000000000002, -24.5], [-67.75, -24.0], [-67.52999999999997, -23.47], [-67.18, -23.32], [-67.14999999999998, -23.25], [-67.25, -23.0], [-67.14999999999998, -22.75], [-67.18, -22.68], [-67.52999999999997, -22.53], [-67.75, -22.0], [-67.52999999999997, -21.47], [-67.18, -21.32], [-67.02999999999997, -20.97], [-66.68, -20.82], [-66.64999999999998, -20.75], [-66.75, -20.5], [-66.64999999999998, -20.25], [-66.75, -20.0], [-66.54000000000002, -19.5], [-66.68, -19.18], [-67.02999999999997, -19.03], [-67.25, -18.5], [-67.02999999999997, -17.97], [-66.5, -17.75], [-65.97000000000003, -17.97], [-65.82, -18.32], [-65.47000000000003, -18.47], [-65.32, -18.82], [-64.97000000000003, -18.97], [-64.82, -19.32], [-64.47000000000003, -19.47], [-64.25, -20.0], [-64.35000000000002, -20.25], [-64.25, -20.5], [-64.47000000000003, -21.03], [-65.0, -21.25], [-64.47000000000003, -21.47], [-64.25, -22.0], [-64.47000000000003, -22.53], [-64.82, -22.68], [-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], [-65.95999999999998, -25.5], [-65.75, -26.0], [-65.85000000000002, -26.25], [-65.75, -26.5], [-65.97000000000003, -27.03], [-66.5, -27.25], [-66.75, -27.15], [-67.0, -27.25], [-67.52999999999997, -27.03], [-67.75, -26.5], [-67.64999999999998, -26.25], [-67.68, -26.18], [-68.02999999999997, -26.03]], [[-65.30000000000001, -21.12], [-65.35000000000002, -21.25], [-65.32, -21.32], [-65.25, -21.35], [-65.0, -21.25], [-65.30000000000001, -21.12]]]]}, "2023-01-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.0, -26.25], [-68.52999999999997, -26.03], [-68.75, -25.5], [-68.52999999999997, -24.97], [-68.0, -24.75], [-67.75, -24.85], [-67.68, -24.82], [-67.54000000000002, -24.5], [-67.75, -24.0], [-67.52999999999997, -23.47], [-67.18, -23.32], [-67.14999999999998, -23.25], [-67.25, -23.0], [-67.14999999999998, -22.75], [-67.18, -22.68], [-67.52999999999997, -22.53], [-67.68, -22.18], [-68.02999999999997, -22.03], [-68.25, -21.5], [-68.02999999999997, -20.97], [-67.5, -20.75], [-67.0, -20.96], [-66.68, -20.82], [-66.64999999999998, -20.75], [-66.75, -20.5], [-66.64999999999998, -20.25], [-66.75, -20.0], [-66.54000000000002, -19.5], [-66.68, -19.18], [-67.02999999999997, -19.03], [-67.25, -18.5], [-67.02999999999997, -17.97], [-66.5, -17.75], [-65.97000000000003, -17.97], [-65.82, -18.32], [-65.47000000000003, -18.47], [-65.32, -18.82], [-64.97000000000003, -18.97], [-64.82, -19.32], [-64.47000000000003, -19.47], [-64.25, -20.0], [-64.35000000000002, -20.25], [-64.25, -20.5], [-64.47000000000003, -21.03], [-65.0, -21.25], [-64.47000000000003, -21.47], [-64.25, -22.0], [-64.47000000000003, -22.53], [-64.82, -22.68], [-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], [-65.95999999999998, -25.5], [-65.75, -26.0], [-65.85000000000002, -26.25], [-65.75, -26.5], [-65.97000000000003, -27.03], [-66.5, -27.25], [-66.75, -27.15], [-67.0, -27.25], [-67.52999999999997, -27.03], [-67.75, -26.5], [-67.64999999999998, -26.25], [-67.68, -26.18], [-67.75, -26.15], [-68.0, -26.25]], [[-65.30000000000001, -21.12], [-65.35000000000002, -21.25], [-65.32, -21.32], [-65.25, -21.35], [-65.0, -21.25], [-65.30000000000001, -21.12]]]]}, "2023-01-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.52999999999997, -26.03], [-68.75, -25.5], [-68.52999999999997, -24.97], [-68.0, -24.75], [-67.75, -24.85], [-67.68, -24.82], [-67.54000000000002, -24.5], [-67.75, -24.0], [-67.52999999999997, -23.47], [-67.18, -23.32], [-67.14999999999998, -23.25], [-67.25, -23.0], [-67.14999999999998, -22.75], [-67.18, -22.68], [-67.52999999999997, -22.53], [-67.68, -22.18], [-68.02999999999997, -22.03], [-68.25, -21.5], [-68.02999999999997, -20.97], [-67.5, -20.75], [-67.0, -20.96], [-66.68, -20.82], [-66.64999999999998, -20.75], [-66.75, -20.5], [-66.64999999999998, -20.25], [-66.75, -20.0], [-66.54000000000002, -19.5], [-66.68, -19.18], [-67.02999999999997, -19.03], [-67.25, -18.5], [-67.02999999999997, -17.97], [-66.5, -17.75], [-65.97000000000003, -17.97], [-65.82, -18.32], [-65.47000000000003, -18.47], [-65.32, -18.82], [-64.97000000000003, -18.97], [-64.82, -19.32], [-64.47000000000003, -19.47], [-64.25, -20.0], [-64.35000000000002, -20.25], [-64.25, -20.5], [-64.47000000000003, -21.03], [-65.0, -21.25], [-64.47000000000003, -21.47], [-64.25, -22.0], [-64.47000000000003, -22.53], [-64.82, -22.68], [-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], [-65.95999999999998, -25.5], [-65.75, -26.0], [-65.85000000000002, -26.25], [-65.75, -26.5], [-65.97000000000003, -27.03], [-66.32, -27.18], [-66.47000000000003, -27.53], [-67.0, -27.75], [-67.52999999999997, -27.53], [-67.68, -27.18], [-68.02999999999997, -27.03], [-68.25, -26.5], [-68.14999999999998, -26.25], [-68.18, -26.18], [-68.52999999999997, -26.03]], [[-65.30000000000001, -21.12], [-65.35000000000002, -21.25], [-65.32, -21.32], [-65.25, -21.35], [-65.0, -21.25], [-65.30000000000001, -21.12]]]]}, "2023-01-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -25.5], [-68.52999999999997, -24.97], [-68.0, -24.75], [-67.75, -24.85], [-67.68, -24.82], [-67.52999999999997, -24.47], [-67.18, -24.32], [-67.02999999999997, -23.97], [-66.5, -23.75], [-66.25, -23.85], [-66.0, -23.75], [-65.47000000000003, -23.97], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.95999999999998, -25.5], [-65.75, -26.0], [-65.85000000000002, -26.25], [-65.75, -26.5], [-65.97000000000003, -27.03], [-66.32, -27.18], [-66.47000000000003, -27.53], [-67.0, -27.75], [-67.52999999999997, -27.53], [-67.68, -27.18], [-68.02999999999997, -27.03], [-68.25, -26.5], [-68.14999999999998, -26.25], [-68.18, -26.18], [-68.52999999999997, -26.03], [-68.75, -25.5]]], [[[-68.02999999999997, -22.03], [-68.25, -21.5], [-68.02999999999997, -20.97], [-67.5, -20.75], [-67.0, -20.96], [-66.5, -20.75], [-65.97000000000003, -20.97], [-65.75, -21.5], [-65.87, -21.8], [-65.75, -21.85], [-65.5, -21.75], [-64.97000000000003, -21.97], [-64.75, -22.5], [-64.97000000000003, -23.03], [-65.5, -23.25], [-65.75, -23.15], [-66.0, -23.25], [-66.25, -23.15], [-66.5, -23.25], [-67.02999999999997, -23.03], [-67.25, -22.5], [-67.07, -22.07], [-67.5, -22.25], [-68.02999999999997, -22.03]]]]}, "2023-01-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -25.5], [-68.52999999999997, -24.97], [-68.0, -24.75], [-67.75, -24.85], [-67.68, -24.82], [-67.52999999999997, -24.47], [-67.18, -24.32], [-67.02999999999997, -23.97], [-66.68, -23.82], [-66.52999999999997, -23.47], [-66.0, -23.25], [-65.47000000000003, -23.47], [-65.25, -24.0], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.85000000000002, -25.25], [-65.75, -25.5], [-65.85000000000002, -25.75], [-65.75, -26.0], [-65.85000000000002, -26.25], [-65.75, -26.5], [-65.97000000000003, -27.03], [-66.32, -27.18], [-66.47000000000003, -27.53], [-67.0, -27.75], [-67.52999999999997, -27.53], [-67.68, -27.18], [-68.02999999999997, -27.03], [-68.25, -26.5], [-68.14999999999998, -26.25], [-68.18, -26.18], [-68.52999999999997, -26.03], [-68.75, -25.5]]], [[[-66.5, -23.25], [-67.02999999999997, -23.03], [-67.25, -22.5], [-67.02999999999997, -21.97], [-66.5, -21.75], [-66.25, -21.85], [-66.0, -21.75], [-65.75, -21.85], [-65.5, -21.75], [-64.97000000000003, -21.97], [-64.75, -22.5], [-64.97000000000003, -23.03], [-65.5, -23.25], [-65.75, -23.15], [-66.0, -23.25], [-66.25, -23.15], [-66.5, -23.25]]]]}, "2023-01-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.75, -25.5], [-68.52999999999997, -24.97], [-68.0, -24.75], [-67.75, -24.85], [-67.5, -24.75], [-67.25, -24.85], [-67.18, -24.82], [-67.02999999999997, -24.47], [-66.68, -24.32], [-66.64999999999998, -24.25], [-66.75, -24.0], [-66.52999999999997, -23.47], [-66.0, -23.25], [-65.47000000000003, -23.47], [-65.25, -24.0], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.85000000000002, -25.25], [-65.75, -25.5], [-65.85000000000002, -25.75], [-65.75, -26.0], [-65.85000000000002, -26.25], [-65.75, -26.5], [-65.97000000000003, -27.03], [-66.32, -27.18], [-66.47000000000003, -27.53], [-67.0, -27.75], [-67.52999999999997, -27.53], [-67.68, -27.18], [-68.02999999999997, -27.03], [-68.25, -26.5], [-68.14999999999998, -26.25], [-68.18, -26.18], [-68.52999999999997, -26.03], [-68.75, -25.5]]], [[[-66.75, -22.5], [-66.52999999999997, -21.97], [-66.0, -21.75], [-65.75, -21.85], [-65.5, -21.75], [-64.97000000000003, -21.97], [-64.75, -22.5], [-64.97000000000003, -23.03], [-65.5, -23.25], [-65.75, -23.15], [-66.0, -23.25], [-66.52999999999997, -23.03], [-66.75, -22.5]]]]}, "2023-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-68.52999999999997, -26.03], [-68.75, -25.5], [-68.52999999999997, -24.97], [-68.0, -24.75], [-67.47000000000003, -24.97], [-67.32, -25.32], [-67.19999999999999, -25.38], [-67.14999999999998, -25.25], [-67.25, -25.0], [-67.02999999999997, -24.47], [-66.68, -24.32], [-66.64999999999998, -24.25], [-66.75, -24.0], [-66.52999999999997, -23.47], [-66.0, -23.25], [-65.47000000000003, -23.47], [-65.25, -24.0], [-65.35000000000002, -24.25], [-65.25, -24.5], [-65.47000000000003, -25.03], [-65.82, -25.18], [-65.85000000000002, -25.25], [-65.75, -25.5], [-65.95999999999998, -26.0], [-65.75, -26.5], [-65.97000000000003, -27.03], [-66.5, -27.25], [-66.75, -27.15], [-67.0, -27.25], [-67.25, -27.15], [-67.5, -27.25], [-68.02999999999997, -27.03], [-68.25, -26.5], [-68.14999999999998, -26.25], [-68.18, -26.18], [-68.52999999999997, -26.03]]]]}, "2023-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.02999999999997, -24.47], [-66.5, -24.25], [-65.97000000000003, -24.47], [-65.75, -25.0], [-65.97000000000003, -25.53], [-66.5, -25.75], [-67.02999999999997, -25.53], [-67.25, -25.0], [-67.02999999999997, -24.47]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.514571484468206}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.633041319703316}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [6.725229550625386, 6.970694779649534, 6.966400888849137, 6.402416567797729, 4.961633121129921, 6.628930289841719, 7.167627446291533, 4.1484632317889805]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [1.688101308386706, 1.9410209383842698, -0.16712165937951795, 0.9218697929622408, -0.32857348000590036, 1.904663741572108, 3.2263843648121906, 4.1484632317889805]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.5046611293731234, -3.256548122845559, -3.5234489135240143, -3.554836318148423, -5.164951264754082, -3.583879387257827, -3.4047197969479157, -2.8903147964086315]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.9595755545732345, -4.5442457678698815, -6.643040008459195, -4.829033087579944, -7.514571484468206, -5.046459615597314, -4.11463146742301, -2.8903147964086315]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.0616159904752918, -1.918503598741171, -1.8688945935657402, -1.6600587479385087, -2.3959244196133933, -1.7022403659938226, -1.6377005640611673, -1.4780234885488996]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.8764861647408364, -2.5550054631043926, -3.1903784307886025, -2.13979497213386, -3.2164377390931693, -2.370415499149297, -2.033040947861679, -1.4780234885488996]}}