{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:57:43.741422", "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": "2024-Mar-03_to_2024-Mar-05_297.0_-40.5"}, "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": 2024030000132}, "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 03 2024"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 05 2024"}, "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": 148967.03694689463}, "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"]}, "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": ["Atlantic Ocean"]}, "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": -40.5}, "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": 297.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "297.0\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": 298.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -44.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -39.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-67.18, -39.82], [-67.03, -39.47], [-66.68, -39.32], [-66.53, -38.97], [-66.0, -38.75], [-65.75, -38.85], [-65.5, -38.75], [-65.25, -38.85], [-65.18, -38.82], [-65.03, -38.47], [-64.5, -38.25], [-64.25, -38.35], [-64.0, -38.25], [-63.75, -38.35], [-63.5, -38.25], [-63.25, -38.35], [-63.0, -38.25], [-62.47, -38.47], [-62.32, -38.82], [-61.97, -38.97], [-61.75, -39.5], [-61.85, -39.75], [-61.82, -39.82], [-61.47, -39.97], [-61.25, -40.5], [-61.47, -41.03], [-61.82, -41.18], [-61.97, -41.53], [-62.5, -41.75], [-62.75, -41.65], [-63.0, -41.75], [-63.25, -41.65], [-63.5, -41.75], [-63.75, -41.65], [-64.0, -41.75], [-64.25, -41.65], [-64.32, -41.68], [-64.35, -41.75], [-64.25, -42.0], [-64.35, -42.25], [-64.25, -42.5], [-64.35, -42.75], [-64.25, -43.0], [-64.35, -43.25], [-64.25, -43.5], [-64.47, -44.03], [-64.82, -44.18], [-64.85, -44.25], [-64.75, -44.5], [-64.97, -45.03], [-65.5, -45.25], [-65.75, -45.15], [-66.0, -45.25], [-66.25, -45.15], [-66.5, -45.25], [-67.03, -45.03], [-67.25, -44.5], [-67.15, -44.25], [-67.25, -44.0], [-67.03, -43.47], [-66.68, -43.32], [-66.65, -43.25], [-66.75, -43.0], [-66.65, -42.75], [-66.75, -42.5], [-66.65, -42.25], [-66.68, -42.18], [-67.03, -42.03], [-67.18, -41.68], [-67.53, -41.53], [-67.75, -41.0], [-67.65, -40.75], [-67.75, -40.5], [-67.53, -39.97], [-67.18, -39.82]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "S.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2024-03-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.75, -40.5], [-67.52999999999997, -39.97], [-67.18, -39.82], [-67.02999999999997, -39.47], [-66.68, -39.32], [-66.52999999999997, -38.97], [-66.0, -38.75], [-65.75, -38.85], [-65.5, -38.75], [-65.25, -38.85], [-65.18, -38.82], [-65.02999999999997, -38.47], [-64.5, -38.25], [-64.25, -38.35], [-64.0, -38.25], [-63.75, -38.35], [-63.5, -38.25], [-63.25, -38.35], [-63.0, -38.25], [-62.47000000000003, -38.47], [-62.31999999999999, -38.82], [-61.97000000000003, -38.97], [-61.75, -39.5], [-61.85000000000002, -39.75], [-61.81999999999999, -39.82], [-61.47000000000003, -39.97], [-61.25, -40.5], [-61.47000000000003, -41.03], [-61.81999999999999, -41.18], [-61.97000000000003, -41.53], [-62.5, -41.75], [-62.75, -41.65], [-63.0, -41.75], [-63.25, -41.65], [-63.5, -41.75], [-63.75, -41.65], [-64.0, -41.75], [-64.25, -41.65], [-64.32, -41.68], [-64.35000000000002, -41.75], [-64.25, -42.0], [-64.35000000000002, -42.25], [-64.25, -42.5], [-64.35000000000002, -42.75], [-64.25, -43.0], [-64.35000000000002, -43.25], [-64.25, -43.5], [-64.47000000000003, -44.03], [-64.82, -44.18], [-64.85000000000002, -44.25], [-64.75, -44.5], [-64.97000000000003, -45.03], [-65.5, -45.25], [-65.75, -45.15], [-66.0, -45.25], [-66.25, -45.15], [-66.5, -45.25], [-67.02999999999997, -45.03], [-67.25, -44.5], [-67.14999999999998, -44.25], [-67.25, -44.0], [-67.02999999999997, -43.47], [-66.68, -43.32], [-66.64999999999998, -43.25], [-66.75, -43.0], [-66.64999999999998, -42.75], [-66.75, -42.5], [-66.64999999999998, -42.25], [-66.68, -42.18], [-67.02999999999997, -42.03], [-67.18, -41.68], [-67.52999999999997, -41.53], [-67.75, -41.0], [-67.64999999999998, -40.75], [-67.75, -40.5]]]]}, "2024-03-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.75, -40.5], [-67.52999999999997, -39.97], [-67.18, -39.82], [-67.02999999999997, -39.47], [-66.68, -39.32], [-66.52999999999997, -38.97], [-66.0, -38.75], [-65.75, -38.85], [-65.5, -38.75], [-65.25, -38.85], [-65.18, -38.82], [-65.02999999999997, -38.47], [-64.5, -38.25], [-64.25, -38.35], [-64.0, -38.25], [-63.75, -38.35], [-63.5, -38.25], [-63.25, -38.35], [-63.0, -38.25], [-62.47000000000003, -38.47], [-62.31999999999999, -38.82], [-61.97000000000003, -38.97], [-61.75, -39.5], [-61.85000000000002, -39.75], [-61.81999999999999, -39.82], [-61.47000000000003, -39.97], [-61.25, -40.5], [-61.47000000000003, -41.03], [-61.81999999999999, -41.18], [-61.97000000000003, -41.53], [-62.5, -41.75], [-62.75, -41.65], [-63.0, -41.75], [-63.25, -41.65], [-63.5, -41.75], [-63.75, -41.65], [-64.0, -41.75], [-64.25, -41.65], [-64.32, -41.68], [-64.35000000000002, -41.75], [-64.25, -42.0], [-64.35000000000002, -42.25], [-64.25, -42.5], [-64.35000000000002, -42.75], [-64.25, -43.0], [-64.35000000000002, -43.25], [-64.25, -43.5], [-64.47000000000003, -44.03], [-64.82, -44.18], [-64.85000000000002, -44.25], [-64.75, -44.5], [-64.97000000000003, -45.03], [-65.5, -45.25], [-65.75, -45.15], [-66.0, -45.25], [-66.25, -45.15], [-66.5, -45.25], [-67.02999999999997, -45.03], [-67.25, -44.5], [-67.14999999999998, -44.25], [-67.25, -44.0], [-67.02999999999997, -43.47], [-66.68, -43.32], [-66.64999999999998, -43.25], [-66.75, -43.0], [-66.64999999999998, -42.75], [-66.75, -42.5], [-66.64999999999998, -42.25], [-66.68, -42.18], [-67.02999999999997, -42.03], [-67.18, -41.68], [-67.52999999999997, -41.53], [-67.75, -41.0], [-67.64999999999998, -40.75], [-67.75, -40.5]]]]}, "2024-03-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-67.75, -40.5], [-67.52999999999997, -39.97], [-67.18, -39.82], [-67.02999999999997, -39.47], [-66.68, -39.32], [-66.52999999999997, -38.97], [-66.0, -38.75], [-65.75, -38.85], [-65.5, -38.75], [-65.25, -38.85], [-65.18, -38.82], [-65.02999999999997, -38.47], [-64.5, -38.25], [-64.25, -38.35], [-64.0, -38.25], [-63.75, -38.35], [-63.5, -38.25], [-63.25, -38.35], [-63.0, -38.25], [-62.47000000000003, -38.47], [-62.31999999999999, -38.82], [-61.97000000000003, -38.97], [-61.75, -39.5], [-61.85000000000002, -39.75], [-61.81999999999999, -39.82], [-61.47000000000003, -39.97], [-61.25, -40.5], [-61.47000000000003, -41.03], [-61.81999999999999, -41.18], [-61.97000000000003, -41.53], [-62.5, -41.75], [-62.75, -41.65], [-63.0, -41.75], [-63.25, -41.65], [-63.5, -41.75], [-63.75, -41.65], [-64.0, -41.75], [-64.25, -41.65], [-64.32, -41.68], [-64.35000000000002, -41.75], [-64.25, -42.0], [-64.35000000000002, -42.25], [-64.25, -42.5], [-64.35000000000002, -42.75], [-64.25, -43.0], [-64.35000000000002, -43.25], [-64.25, -43.5], [-64.47000000000003, -44.03], [-64.82, -44.18], [-64.85000000000002, -44.25], [-64.75, -44.5], [-64.97000000000003, -45.03], [-65.5, -45.25], [-65.75, -45.15], [-66.0, -45.25], [-66.25, -45.15], [-66.5, -45.25], [-67.02999999999997, -45.03], [-67.25, -44.5], [-67.14999999999998, -44.25], [-67.25, -44.0], [-67.02999999999997, -43.47], [-66.68, -43.32], [-66.64999999999998, -43.25], [-66.75, -43.0], [-66.64999999999998, -42.75], [-66.75, -42.5], [-66.64999999999998, -42.25], [-66.68, -42.18], [-67.02999999999997, -42.03], [-67.18, -41.68], [-67.52999999999997, -41.53], [-67.75, -41.0], [-67.64999999999998, -40.75], [-67.75, -40.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.935283092563964}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.542976759498757}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [15.526749477354372, 14.8358973895987, 15.453924541961612]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [11.641653383419623, 10.996938648303114, 12.448458652755278]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.241538831486453, -6.0205178681760785, -5.366873578833734]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.598217199926523, -7.935283092563964, -6.616074683275201]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5927813583780441, -1.8242779236800393, -1.6142312679986763]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9188808563041075, -2.299023805903913, -1.9443472965024209]}}