{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-04-05 16:53:42.137030", "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-Jun-07_to_2023-Jun-09_256.5_-29.5"}, "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": 2023060000323}, "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": "June 07 2023"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 09 2023"}, "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": 133080.2140225834}, "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": -29.5}, "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": 256.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "256.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 250.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 257.5}, "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": -26.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "MultiPolygon", "coordinates": [[[[-110.0, -26.25], [-109.75, -26.35], [-109.68, -26.32], [-109.53, -25.97], [-109.0, -25.75], [-108.47, -25.97], [-108.32, -26.32], [-108.25, -26.35], [-108.0, -26.25], [-107.75, -26.35], [-107.5, -26.25], [-107.25, -26.35], [-107.0, -26.25], [-106.75, -26.35], [-106.5, -26.25], [-105.97, -26.47], [-105.82, -26.82], [-105.47, -26.97], [-105.32, -27.32], [-105.25, -27.35], [-105.0, -27.25], [-104.47, -27.47], [-104.32, -27.82], [-103.97, -27.97], [-103.82, -28.32], [-103.47, -28.47], [-103.32, -28.82], [-103.25, -28.85], [-103.0, -28.75], [-102.47, -28.97], [-102.32, -29.32], [-101.97, -29.47], [-101.75, -30.0], [-101.85, -30.25], [-101.75, -30.5], [-101.85, -30.75], [-101.75, -31.0], [-101.97, -31.53], [-102.5, -31.75], [-103.03, -31.53], [-103.18, -31.18], [-103.25, -31.15], [-103.5, -31.25], [-104.03, -31.03], [-104.18, -30.68], [-104.25, -30.65], [-104.5, -30.75], [-105.03, -30.53], [-105.18, -30.18], [-105.25, -30.15], [-105.5, -30.25], [-106.03, -30.03], [-106.18, -29.68], [-106.53, -29.53], [-106.68, -29.18], [-106.75, -29.15], [-107.0, -29.25], [-107.53, -29.03], [-107.68, -28.68], [-107.75, -28.65], [-108.0, -28.75], [-108.53, -28.53], [-108.68, -28.18], [-109.03, -28.03], [-109.18, -27.68], [-109.25, -27.65], [-109.32, -27.68], [-109.47, -28.03], [-110.0, -28.25], [-110.53, -28.03], [-110.75, -27.5], [-110.65, -27.25], [-110.75, -27.0], [-110.53, -26.47], [-110.0, -26.25]]]]}}, "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": {"2023-06-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.75, -27.0], [-110.53, -26.47], [-110.0, -26.25], [-109.75, -26.35], [-109.68, -26.32], [-109.53, -25.97], [-109.0, -25.75], [-108.47, -25.97], [-108.32, -26.32], [-108.25, -26.35], [-108.0, -26.25], [-107.75, -26.35], [-107.5, -26.25], [-107.25, -26.35], [-107.0, -26.25], [-106.75, -26.35], [-106.5, -26.25], [-105.97, -26.47], [-105.82, -26.82], [-105.47, -26.97], [-105.32, -27.32], [-105.25, -27.35], [-105.0, -27.25], [-104.47, -27.47], [-104.32, -27.82], [-103.97000000000003, -27.97], [-103.82, -28.32], [-103.47000000000003, -28.47], [-103.32, -28.82], [-103.25, -28.85], [-103.0, -28.75], [-102.47000000000003, -28.97], [-102.32, -29.32], [-101.97000000000003, -29.47], [-101.75, -30.0], [-101.85000000000002, -30.25], [-101.75, -30.5], [-101.85000000000002, -30.75], [-101.75, -31.0], [-101.97000000000003, -31.53], [-102.5, -31.75], [-103.02999999999997, -31.53], [-103.18, -31.18], [-103.25, -31.15], [-103.5, -31.25], [-104.03, -31.03], [-104.18, -30.68], [-104.25, -30.65], [-104.5, -30.75], [-105.03, -30.53], [-105.18, -30.18], [-105.25, -30.15], [-105.5, -30.25], [-106.03, -30.03], [-106.18, -29.68], [-106.53, -29.53], [-106.68, -29.18], [-106.75, -29.15], [-107.0, -29.25], [-107.53, -29.03], [-107.68, -28.68], [-107.75, -28.65], [-108.0, -28.75], [-108.53, -28.53], [-108.68, -28.18], [-109.03, -28.03], [-109.18, -27.68], [-109.25, -27.65], [-109.32, -27.68], [-109.47, -28.03], [-110.0, -28.25], [-110.53, -28.03], [-110.75, -27.5], [-110.65, -27.25], [-110.75, -27.0]]]]}, "2023-06-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.75, -27.0], [-110.53, -26.47], [-110.0, -26.25], [-109.75, -26.35], [-109.68, -26.32], [-109.53, -25.97], [-109.0, -25.75], [-108.47, -25.97], [-108.32, -26.32], [-108.25, -26.35], [-108.0, -26.25], [-107.75, -26.35], [-107.5, -26.25], [-107.25, -26.35], [-107.0, -26.25], [-106.75, -26.35], [-106.5, -26.25], [-105.97, -26.47], [-105.82, -26.82], [-105.47, -26.97], [-105.32, -27.32], [-105.25, -27.35], [-105.0, -27.25], [-104.47, -27.47], [-104.32, -27.82], [-103.97000000000003, -27.97], [-103.82, -28.32], [-103.47000000000003, -28.47], [-103.32, -28.82], [-103.25, -28.85], [-103.0, -28.75], [-102.47000000000003, -28.97], [-102.32, -29.32], [-101.97000000000003, -29.47], [-101.75, -30.0], [-101.85000000000002, -30.25], [-101.75, -30.5], [-101.85000000000002, -30.75], [-101.75, -31.0], [-101.97000000000003, -31.53], [-102.5, -31.75], [-103.02999999999997, -31.53], [-103.18, -31.18], [-103.25, -31.15], [-103.5, -31.25], [-104.03, -31.03], [-104.18, -30.68], [-104.25, -30.65], [-104.5, -30.75], [-105.03, -30.53], [-105.18, -30.18], [-105.25, -30.15], [-105.5, -30.25], [-106.03, -30.03], [-106.18, -29.68], [-106.53, -29.53], [-106.68, -29.18], [-106.75, -29.15], [-107.0, -29.25], [-107.53, -29.03], [-107.68, -28.68], [-107.75, -28.65], [-108.0, -28.75], [-108.53, -28.53], [-108.68, -28.18], [-109.03, -28.03], [-109.18, -27.68], [-109.25, -27.65], [-109.32, -27.68], [-109.47, -28.03], [-110.0, -28.25], [-110.53, -28.03], [-110.75, -27.5], [-110.65, -27.25], [-110.75, -27.0]]]]}, "2023-06-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-110.75, -27.0], [-110.53, -26.47], [-110.0, -26.25], [-109.75, -26.35], [-109.68, -26.32], [-109.53, -25.97], [-109.0, -25.75], [-108.47, -25.97], [-108.32, -26.32], [-108.25, -26.35], [-108.0, -26.25], [-107.75, -26.35], [-107.5, -26.25], [-107.25, -26.35], [-107.0, -26.25], [-106.75, -26.35], [-106.5, -26.25], [-105.97, -26.47], [-105.82, -26.82], [-105.47, -26.97], [-105.32, -27.32], [-105.25, -27.35], [-105.0, -27.25], [-104.47, -27.47], [-104.32, -27.82], [-103.97000000000003, -27.97], [-103.82, -28.32], [-103.47000000000003, -28.47], [-103.32, -28.82], [-103.25, -28.85], [-103.0, -28.75], [-102.47000000000003, -28.97], [-102.32, -29.32], [-101.97000000000003, -29.47], [-101.75, -30.0], [-101.85000000000002, -30.25], [-101.75, -30.5], [-101.85000000000002, -30.75], [-101.75, -31.0], [-101.97000000000003, -31.53], [-102.5, -31.75], [-103.02999999999997, -31.53], [-103.18, -31.18], [-103.25, -31.15], [-103.5, -31.25], [-104.03, -31.03], [-104.18, -30.68], [-104.25, -30.65], [-104.5, -30.75], [-105.03, -30.53], [-105.18, -30.18], [-105.25, -30.15], [-105.5, -30.25], [-106.03, -30.03], [-106.18, -29.68], [-106.53, -29.53], [-106.68, -29.18], [-106.75, -29.15], [-107.0, -29.25], [-107.53, -29.03], [-107.68, -28.68], [-107.75, -28.65], [-108.0, -28.75], [-108.53, -28.53], [-108.68, -28.18], [-109.03, -28.03], [-109.18, -27.68], [-109.25, -27.65], [-109.32, -27.68], [-109.47, -28.03], [-110.0, -28.25], [-110.53, -28.03], [-110.75, -27.5], [-110.65, -27.25], [-110.75, -27.0]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.276676617365638}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.3722727738579805}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [17.26053273991397, 16.53862660541631, 17.156904742789834]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [16.032256064756155, 14.859668019934418, 15.599093646632639]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-2.1422834373462236, -2.827277794628831, -2.147257089598886]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.6422763245224132, -3.276676617365638, -2.892721912365971]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6702913342119756, -2.212185923715001, -1.6600258101692116]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.017679516962099, -2.4907271820710064, -2.2431618735063332]}}