{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:16:43.340692", "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-Jan-10_to_2022-Jan-16_251.0_-27.5"}, "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": 2022010000460}, "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 10 2022"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "January 16 2022"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 7}, "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": 157397.82775136374}, "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": ["Chile"]}, "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": ["Pacific 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": -27.5}, "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": 251.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "251.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 249.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 255.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -26.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-110.5, -25.75], [-110.25, -25.85], [-110.18, -25.82], [-110.03, -25.47], [-109.5, -25.25], [-108.97, -25.47], [-108.75, -26.0], [-108.85, -26.25], [-108.82, -26.32], [-108.75, -26.35], [-108.5, -26.25], [-107.97, -26.47], [-107.82, -26.82], [-107.75, -26.85], [-107.5, -26.75], [-106.97, -26.97], [-106.82, -27.32], [-106.75, -27.35], [-106.68, -27.32], [-106.53, -26.97], [-106.0, -26.75], [-105.75, -26.85], [-105.5, -26.75], [-104.97, -26.97], [-104.75, -27.5], [-104.85, -27.75], [-104.75, -28.0], [-104.85, -28.25], [-104.8, -28.37], [-104.5, -28.25], [-103.97, -28.47], [-103.75, -29.0], [-103.85, -29.25], [-103.75, -29.5], [-103.85, -29.75], [-103.75, -30.0], [-103.85, -30.25], [-103.75, -30.5], [-103.97, -31.03], [-104.32, -31.18], [-104.47, -31.53], [-105.0, -31.75], [-105.25, -31.65], [-105.5, -31.75], [-105.75, -31.65], [-106.0, -31.75], [-106.53, -31.53], [-106.68, -31.18], [-107.03, -31.03], [-107.18, -30.68], [-107.53, -30.53], [-107.68, -30.18], [-108.03, -30.03], [-108.18, -29.68], [-108.53, -29.53], [-108.75, -29.0], [-108.65, -28.75], [-108.68, -28.68], [-108.75, -28.65], [-109.0, -28.75], [-109.53, -28.53], [-109.68, -28.18], [-110.03, -28.03], [-110.18, -27.68], [-110.25, -27.65], [-110.5, -27.75], [-110.75, -27.65], [-111.0, -27.75], [-111.53, -27.53], [-111.75, -27.0], [-111.65, -26.75], [-111.75, -26.5], [-111.53, -25.97], [-111.0, -25.75], [-110.75, -25.85], [-110.5, -25.75]]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.Pacific-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2022-01-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.53, -28.03], [-106.75, -27.5], [-106.53, -26.97], [-106.0, -26.75], [-105.75, -26.85], [-105.5, -26.75], [-104.97, -26.97], [-104.75, -27.5], [-104.97, -28.03], [-105.5, -28.25], [-105.75, -28.15], [-106.0, -28.25], [-106.53, -28.03]]], [[[-109.5, -26.75], [-110.03, -26.53], [-110.25, -26.0], [-110.03, -25.47], [-109.5, -25.25], [-108.97, -25.47], [-108.75, -26.0], [-108.97, -26.53], [-109.5, -26.75]]]]}, "2022-01-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-106.53, -28.03], [-106.75, -27.5], [-106.53, -26.97], [-106.0, -26.75], [-105.75, -26.85], [-105.5, -26.75], [-104.97, -26.97], [-104.75, -27.5], [-104.97, -28.03], [-105.5, -28.25], [-105.75, -28.15], [-106.0, -28.25], [-106.53, -28.03]]], [[[-109.5, -26.75], [-110.03, -26.53], [-110.25, -26.0], [-110.03, -25.47], [-109.5, -25.25], [-108.97, -25.47], [-108.75, -26.0], [-108.97, -26.53], [-109.5, -26.75]]]]}, "2022-01-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-107.03, -31.03], [-107.25, -30.5], [-107.03, -29.97], [-106.5, -29.75], [-106.25, -29.85], [-106.0, -29.75], [-105.75, -29.85], [-105.5, -29.75], [-104.97, -29.97], [-104.75, -30.5], [-104.97, -31.03], [-105.5, -31.25], [-105.75, -31.15], [-106.0, -31.25], [-106.25, -31.15], [-106.5, -31.25], [-107.03, -31.03]]], [[[-106.75, -27.5], [-106.53, -26.97], [-106.0, -26.75], [-105.75, -26.85], [-105.5, -26.75], [-104.97, -26.97], [-104.75, -27.5], [-104.97, -28.03], [-105.5, -28.25], [-105.75, -28.15], [-106.0, -28.25], [-106.53, -28.03], [-106.75, -27.5]]], [[[-110.03, -26.53], [-110.25, -26.0], [-110.03, -25.47], [-109.5, -25.25], [-108.97, -25.47], [-108.75, -26.0], [-108.97, -26.53], [-109.5, -26.75], [-110.03, -26.53]]]]}, "2022-01-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.5, -27.25], [-111.03, -27.03], [-111.25, -26.5], [-111.03, -25.97], [-110.5, -25.75], [-110.25, -25.85], [-110.0, -25.75], [-109.47, -25.97], [-109.30000000000001, -26.37], [-109.0, -26.25], [-108.75, -26.35], [-108.5, -26.25], [-107.97, -26.47], [-107.82, -26.82], [-107.75, -26.85], [-107.5, -26.75], [-106.97, -26.97], [-106.82, -27.32], [-106.75, -27.35], [-106.5, -27.25], [-106.25, -27.35], [-106.0, -27.25], [-105.75, -27.35], [-105.5, -27.25], [-104.97, -27.47], [-104.75, -28.0], [-104.85, -28.25], [-104.80000000000001, -28.37], [-104.5, -28.25], [-103.97000000000003, -28.47], [-103.75, -29.0], [-103.85000000000002, -29.25], [-103.75, -29.5], [-103.85000000000002, -29.75], [-103.75, -30.0], [-103.85000000000002, -30.25], [-103.75, -30.5], [-103.97000000000003, -31.03], [-104.32, -31.18], [-104.47, -31.53], [-105.0, -31.75], [-105.25, -31.65], [-105.5, -31.75], [-105.75, -31.65], [-106.0, -31.75], [-106.53, -31.53], [-106.68, -31.18], [-107.03, -31.03], [-107.25, -30.5], [-107.12, -30.2], [-107.25, -30.15], [-107.5, -30.25], [-108.03, -30.03], [-108.18, -29.68], [-108.53, -29.53], [-108.75, -29.0], [-108.62, -28.7], [-109.03, -28.53], [-109.18, -28.18], [-109.53, -28.03], [-109.75, -27.5], [-109.65, -27.25], [-109.69999999999999, -27.12], [-110.0, -27.25], [-110.25, -27.15], [-110.5, -27.25]]]]}, "2022-01-14T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.75, -26.5], [-111.53, -25.97], [-111.0, -25.75], [-110.75, -25.85], [-110.5, -25.75], [-110.25, -25.85], [-110.0, -25.75], [-109.75, -25.85], [-109.5, -25.75], [-108.97, -25.97], [-108.82, -26.32], [-108.75, -26.35], [-108.5, -26.25], [-107.97, -26.47], [-107.82, -26.82], [-107.75, -26.85], [-107.5, -26.75], [-106.97, -26.97], [-106.82, -27.32], [-106.75, -27.35], [-106.5, -27.25], [-106.25, -27.35], [-106.0, -27.25], [-105.75, -27.35], [-105.5, -27.25], [-104.97, -27.47], [-104.75, -28.0], [-104.85, -28.25], [-104.80000000000001, -28.37], [-104.5, -28.25], [-103.97000000000003, -28.47], [-103.75, -29.0], [-103.85000000000002, -29.25], [-103.75, -29.5], [-103.85000000000002, -29.75], [-103.75, -30.0], [-103.85000000000002, -30.25], [-103.75, -30.5], [-103.97000000000003, -31.03], [-104.32, -31.18], [-104.47, -31.53], [-105.0, -31.75], [-105.25, -31.65], [-105.5, -31.75], [-105.75, -31.65], [-106.0, -31.75], [-106.53, -31.53], [-106.68, -31.18], [-107.03, -31.03], [-107.18, -30.68], [-107.53, -30.53], [-107.68, -30.18], [-108.03, -30.03], [-108.18, -29.68], [-108.53, -29.53], [-108.75, -29.0], [-108.65, -28.75], [-108.68, -28.68], [-108.75, -28.65], [-109.0, -28.75], [-109.53, -28.53], [-109.68, -28.18], [-110.03, -28.03], [-110.18, -27.68], [-110.25, -27.65], [-110.5, -27.75], [-110.75, -27.65], [-111.0, -27.75], [-111.53, -27.53], [-111.75, -27.0], [-111.65, -26.75], [-111.75, -26.5]]]]}, "2022-01-15T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.75, -26.5], [-111.53, -25.97], [-111.0, -25.75], [-110.75, -25.85], [-110.5, -25.75], [-110.25, -25.85], [-110.0, -25.75], [-109.75, -25.85], [-109.5, -25.75], [-108.97, -25.97], [-108.82, -26.32], [-108.75, -26.35], [-108.5, -26.25], [-107.97, -26.47], [-107.82, -26.82], [-107.75, -26.85], [-107.5, -26.75], [-106.97, -26.97], [-106.82, -27.32], [-106.75, -27.35], [-106.5, -27.25], [-106.25, -27.35], [-106.0, -27.25], [-105.75, -27.35], [-105.5, -27.25], [-104.97, -27.47], [-104.75, -28.0], [-104.85, -28.25], [-104.80000000000001, -28.37], [-104.5, -28.25], [-103.97000000000003, -28.47], [-103.75, -29.0], [-103.85000000000002, -29.25], [-103.75, -29.5], [-103.85000000000002, -29.75], [-103.75, -30.0], [-103.85000000000002, -30.25], [-103.75, -30.5], [-103.97000000000003, -31.03], [-104.32, -31.18], [-104.47, -31.53], [-105.0, -31.75], [-105.25, -31.65], [-105.5, -31.75], [-105.75, -31.65], [-106.0, -31.75], [-106.53, -31.53], [-106.68, -31.18], [-107.03, -31.03], [-107.18, -30.68], [-107.53, -30.53], [-107.68, -30.18], [-108.03, -30.03], [-108.18, -29.68], [-108.53, -29.53], [-108.75, -29.0], [-108.65, -28.75], [-108.68, -28.68], [-108.75, -28.65], [-109.0, -28.75], [-109.53, -28.53], [-109.68, -28.18], [-110.03, -28.03], [-110.18, -27.68], [-110.25, -27.65], [-110.5, -27.75], [-110.75, -27.65], [-111.0, -27.75], [-111.53, -27.53], [-111.75, -27.0], [-111.65, -26.75], [-111.75, -26.5]]]]}, "2022-01-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-111.75, -26.5], [-111.53, -25.97], [-111.0, -25.75], [-110.47, -25.97], [-110.32, -26.32], [-110.25, -26.35], [-110.18, -26.32], [-110.03, -25.97], [-109.5, -25.75], [-108.97, -25.97], [-108.82, -26.32], [-108.47, -26.47], [-108.32, -26.82], [-107.97, -26.97], [-107.75, -27.5], [-107.85, -27.75], [-107.82, -27.82], [-107.47, -27.97], [-107.32, -28.32], [-107.25, -28.35], [-107.0, -28.25], [-106.75, -28.35], [-106.5, -28.25], [-105.97, -28.47], [-105.82, -28.82], [-105.47, -28.97], [-105.32, -29.32], [-104.97, -29.47], [-104.75, -30.0], [-104.97, -30.53], [-105.5, -30.75], [-105.75, -30.65], [-105.82, -30.68], [-105.97, -31.03], [-106.5, -31.25], [-107.03, -31.03], [-107.18, -30.68], [-107.53, -30.53], [-107.68, -30.18], [-108.03, -30.03], [-108.18, -29.68], [-108.53, -29.53], [-108.75, -29.0], [-108.65, -28.75], [-108.68, -28.68], [-108.75, -28.65], [-109.0, -28.75], [-109.53, -28.53], [-109.68, -28.18], [-110.03, -28.03], [-110.18, -27.68], [-110.25, -27.65], [-110.5, -27.75], [-110.75, -27.65], [-111.0, -27.75], [-111.53, -27.53], [-111.75, -27.0], [-111.65, -26.75], [-111.75, -26.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.4477014118131137}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.427440774486214}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [21.55368390896996, 21.69412985570301, 21.414491540564825, 21.396239869812575, 21.300881615522997, 20.91308176966828, 21.59114183713899]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [21.1050609765137, 21.496448458821703, 20.82663106570965, 20.33881969362949, 20.54501638834256, 20.303041890537543, 20.785635666333576]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3305360281592584, -1.2299288311419332, -1.0909213354699527, -1.161194053881208, -1.3738486103799346, -1.805054212761576, -1.2734912425099436]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.559937603978085, -1.2474235995495064, -1.2521621950955932, -1.5841878661462374, -1.705874310640354, -2.4477014118131137, -1.6441565864603263]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5731935803370007, -1.506881444301268, -1.2212243605265467, -1.335057966108057, -1.5910015762831278, -2.084590661846004, -1.4882477386215707]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7835535683331656, -1.6010959129457223, -1.2788762458035874, -1.6581095180846686, -2.0826292396202106, -3.1735544762293424, -2.061386503613869]}}