{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:47.193878", "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": "2011-Nov-05_to_2011-Nov-13_182.5_-10.5"}, "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": 2011110000356}, "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": "November 05 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 13 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 9}, "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": 345184.2257393268}, "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": ["Samoa"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Equatorial.Pacific-Ocean", "S.Pacific-Ocean"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Oceania"]}, "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": ["South 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": -10.5}, "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": 182.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "182.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 181.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 192.25}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.75}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-176.25, -8.0], [-176.03, -7.47], [-175.5, -7.25], [-174.97, -7.47], [-174.82, -7.82], [-174.47, -7.97], [-174.25, -8.5], [-174.47, -9.03], [-175.0, -9.25], [-175.53, -9.03], [-175.68, -8.68], [-176.03, -8.53], [-176.25, -8.0]]]]}, "2011-11-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-176.75, -8.0], [-176.53, -7.47], [-176.0, -7.25], [-175.75, -7.35], [-175.5, -7.25], [-174.97, -7.47], [-174.82, -7.82], [-174.47, -7.97], [-174.32, -8.32], [-173.97, -8.47], [-173.75, -9.0], [-173.97, -9.53], [-174.5, -9.75], [-175.0, -9.54], [-175.5, -9.75], [-175.75, -9.65], [-176.0, -9.75], [-176.3, -9.63], [-176.47, -10.03], [-177.0, -10.25], [-177.53, -10.03], [-177.75, -9.5], [-177.53, -8.97], [-177.0, -8.75], [-176.7, -8.87], [-176.54, -8.5], [-176.75, -8.0]]]]}, "2011-11-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-176.62, -8.3], [-176.75, -8.0], [-176.53, -7.47], [-176.0, -7.25], [-175.75, -7.35], [-175.5, -7.25], [-174.97, -7.47], [-174.82, -7.82], [-174.47, -7.97], [-174.32, -8.32], [-173.97, -8.47], [-173.75, -9.0], [-173.97, -9.53], [-174.5, -9.75], [-175.0, -9.54], [-175.32, -9.68], [-175.47, -10.03], [-175.87, -10.2], [-175.75, -10.5], [-175.97, -11.03], [-176.5, -11.25], [-177.03, -11.03], [-177.25, -10.5], [-177.12, -10.2], [-177.53, -10.03], [-177.75, -9.5], [-177.53, -8.97], [-177.18, -8.82], [-177.03, -8.47], [-176.62, -8.3]]]]}, "2011-11-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-178.03, -9.47], [-177.68, -9.32], [-177.53, -8.97], [-177.18, -8.82], [-177.03, -8.47], [-176.68, -8.32], [-176.65, -8.25], [-176.75, -8.0], [-176.53, -7.47], [-176.0, -7.25], [-175.75, -7.35], [-175.5, -7.25], [-174.97, -7.47], [-174.82, -7.82], [-174.47, -7.97], [-174.32, -8.32], [-174.25, -8.35], [-174.0, -8.25], [-173.47, -8.47], [-173.25, -9.0], [-173.35, -9.25], [-173.32, -9.32], [-172.97, -9.47], [-172.82, -9.82], [-172.47, -9.97], [-172.25, -10.5], [-172.47, -11.03], [-173.0, -11.25], [-173.53, -11.03], [-173.68, -10.68], [-173.75, -10.65], [-174.0, -10.75], [-174.25, -10.65], [-174.5, -10.75], [-174.75, -10.65], [-174.82, -10.68], [-174.97, -11.03], [-175.5, -11.25], [-176.0, -11.04], [-176.5, -11.25], [-176.75, -11.15], [-177.0, -11.25], [-177.25, -11.15], [-177.5, -11.25], [-178.03, -11.03], [-178.25, -10.5], [-178.15, -10.25], [-178.25, -10.0], [-178.03, -9.47]]]]}, "2011-11-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-178.75, -9.5], [-178.53, -8.97], [-178.0, -8.75], [-177.75, -8.85], [-177.5, -8.75], [-177.25, -8.85], [-177.18, -8.82], [-177.03, -8.47], [-176.68, -8.32], [-176.53, -7.97], [-176.0, -7.75], [-175.75, -7.85], [-175.5, -7.75], [-174.97, -7.97], [-174.82, -8.32], [-174.75, -8.35], [-174.5, -8.25], [-174.25, -8.35], [-174.0, -8.25], [-173.47, -8.47], [-173.25, -9.0], [-173.35, -9.25], [-173.32, -9.32], [-172.97, -9.47], [-172.82, -9.82], [-172.47, -9.97], [-172.32, -10.32], [-171.97, -10.47], [-171.82, -10.82], [-171.75, -10.85], [-171.5, -10.75], [-171.25, -10.85], [-171.0, -10.75], [-170.47, -10.97], [-170.32, -11.32], [-170.25, -11.35], [-170.0, -11.25], [-169.47, -11.47], [-169.32, -11.82], [-169.25, -11.85], [-169.0, -11.75], [-168.47, -11.97], [-168.25, -12.5], [-168.47, -13.03], [-168.82, -13.18], [-168.97, -13.53], [-169.32, -13.68], [-169.47, -14.03], [-169.82, -14.18], [-169.97, -14.53], [-170.5, -14.75], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-172.03, -14.53], [-172.25, -14.0], [-172.15, -13.75], [-172.25, -13.5], [-172.03, -12.97], [-171.5, -12.75], [-172.03, -12.53], [-172.18, -12.18], [-172.5, -12.04], [-173.0, -12.25], [-173.25, -12.15], [-173.32, -12.18], [-173.46, -12.5], [-173.25, -13.0], [-173.35, -13.25], [-173.25, -13.5], [-173.35, -13.75], [-173.25, -14.0], [-173.47, -14.53], [-174.0, -14.75], [-174.53, -14.53], [-174.68, -14.18], [-174.93, -14.07], [-174.75, -14.5], [-174.85, -14.75], [-174.75, -15.0], [-174.97, -15.53], [-175.32, -15.68], [-175.47, -16.03], [-176.0, -16.25], [-176.53, -16.03], [-176.75, -15.5], [-176.65, -15.25], [-176.75, -15.0], [-176.54, -14.5], [-176.68, -14.18], [-177.03, -14.03], [-177.18, -13.68], [-177.53, -13.53], [-177.75, -13.0], [-177.65, -12.75], [-177.75, -12.5], [-177.65, -12.25], [-177.68, -12.18], [-178.03, -12.03], [-178.25, -11.5], [-178.15, -11.25], [-178.18, -11.18], [-178.25, -11.15], [-178.5, -11.25], [-179.03, -11.03], [-179.25, -10.5], [-179.03, -9.97], [-178.68, -9.82], [-178.65, -9.75], [-178.75, -9.5]], [[-171.25, -12.85], [-171.18, -12.82], [-171.12, -12.7], [-171.25, -12.65], [-171.5, -12.75], [-171.25, -12.85]], [[-175.35, -13.75], [-175.32, -13.82], [-175.07, -13.93], [-175.18, -13.68], [-175.3, -13.63], [-175.35, -13.75]], [[-175.68, -12.68], [-175.75, -12.65], [-175.82, -12.68], [-175.85, -12.75], [-175.82, -12.82], [-175.7, -12.87], [-175.65, -12.75], [-175.68, -12.68]]]]}, "2011-11-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-179.25, -10.5], [-179.03, -9.97], [-178.68, -9.82], [-178.65, -9.75], [-178.75, -9.5], [-178.53, -8.97], [-178.0, -8.75], [-177.75, -8.85], [-177.5, -8.75], [-177.25, -8.85], [-177.18, -8.82], [-177.03, -8.47], [-176.68, -8.32], [-176.53, -7.97], [-176.0, -7.75], [-175.75, -7.85], [-175.5, -7.75], [-174.97, -7.97], [-174.82, -8.32], [-174.75, -8.35], [-174.5, -8.25], [-174.25, -8.35], [-174.0, -8.25], [-173.47, -8.47], [-173.25, -9.0], [-173.35, -9.25], [-173.32, -9.32], [-172.97, -9.47], [-172.82, -9.82], [-172.47, -9.97], [-172.32, -10.32], [-171.97, -10.47], [-171.82, -10.82], [-171.75, -10.85], [-171.5, -10.75], [-171.25, -10.85], [-171.0, -10.75], [-170.47, -10.97], [-170.32, -11.32], [-170.25, -11.35], [-170.0, -11.25], [-169.47, -11.47], [-169.32, -11.82], [-169.25, -11.85], [-169.0, -11.75], [-168.75, -11.85], [-168.5, -11.75], [-168.25, -11.85], [-168.0, -11.75], [-167.47, -11.97], [-167.25, -12.5], [-167.47, -13.03], [-167.82, -13.18], [-167.97, -13.53], [-168.5, -13.75], [-169.0, -13.54], [-169.32, -13.68], [-169.47, -14.03], [-169.82, -14.18], [-169.97, -14.53], [-170.5, -14.75], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-172.03, -14.53], [-172.25, -14.0], [-172.15, -13.75], [-172.25, -13.5], [-172.03, -12.97], [-171.5, -12.75], [-172.03, -12.53], [-172.18, -12.18], [-172.5, -12.04], [-173.0, -12.25], [-173.25, -12.15], [-173.32, -12.18], [-173.46, -12.5], [-173.25, -13.0], [-173.35, -13.25], [-173.25, -13.5], [-173.35, -13.75], [-173.25, -14.0], [-173.47, -14.53], [-174.0, -14.75], [-174.53, -14.53], [-174.68, -14.18], [-174.93, -14.07], [-174.75, -14.5], [-174.85, -14.75], [-174.75, -15.0], [-174.97, -15.53], [-175.32, -15.68], [-175.47, -16.03], [-176.0, -16.25], [-176.53, -16.03], [-176.75, -15.5], [-176.65, -15.25], [-176.68, -15.18], [-177.03, -15.03], [-177.25, -14.5], [-177.15, -14.25], [-177.25, -14.0], [-177.15, -13.75], [-177.18, -13.68], [-177.53, -13.53], [-177.68, -13.18], [-178.03, -13.03], [-178.25, -12.5], [-178.15, -12.25], [-178.25, -12.0], [-178.15, -11.75], [-178.18, -11.68], [-178.53, -11.53], [-178.68, -11.18], [-179.03, -11.03], [-179.25, -10.5]], [[-171.25, -12.85], [-171.18, -12.82], [-171.12, -12.7], [-171.25, -12.65], [-171.5, -12.75], [-171.25, -12.85]], [[-175.35, -13.75], [-175.32, -13.82], [-175.07, -13.93], [-175.18, -13.68], [-175.3, -13.63], [-175.35, -13.75]], [[-175.68, -12.68], [-175.75, -12.65], [-175.82, -12.68], [-175.85, -12.75], [-175.82, -12.82], [-175.7, -12.87], [-175.65, -12.75], [-175.68, -12.68]]]]}, "2011-11-11T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-179.25, -10.5], [-179.03, -9.97], [-178.68, -9.82], [-178.65, -9.75], [-178.75, -9.5], [-178.53, -8.97], [-178.0, -8.75], [-177.75, -8.85], [-177.5, -8.75], [-176.97, -8.97], [-176.75, -9.5], [-176.85, -9.75], [-176.8, -9.87], [-176.68, -9.82], [-176.53, -9.47], [-176.0, -9.25], [-175.75, -9.35], [-175.5, -9.25], [-175.25, -9.35], [-175.18, -9.32], [-175.03, -8.97], [-174.5, -8.75], [-174.25, -8.85], [-174.0, -8.75], [-173.47, -8.97], [-173.32, -9.32], [-172.97, -9.47], [-172.82, -9.82], [-172.47, -9.97], [-172.32, -10.32], [-171.97, -10.47], [-171.82, -10.82], [-171.75, -10.85], [-171.5, -10.75], [-171.25, -10.85], [-171.0, -10.75], [-170.47, -10.97], [-170.32, -11.32], [-170.25, -11.35], [-170.0, -11.25], [-169.47, -11.47], [-169.32, -11.82], [-169.25, -11.85], [-169.0, -11.75], [-168.75, -11.85], [-168.5, -11.75], [-168.25, -11.85], [-168.0, -11.75], [-167.47, -11.97], [-167.25, -12.5], [-167.47, -13.03], [-167.82, -13.18], [-167.97, -13.53], [-168.5, -13.75], [-169.0, -13.54], [-169.32, -13.68], [-169.47, -14.03], [-169.82, -14.18], [-169.97, -14.53], [-170.5, -14.75], [-170.75, -14.65], [-171.0, -14.75], [-171.25, -14.65], [-171.5, -14.75], [-172.03, -14.53], [-172.25, -14.0], [-172.15, -13.75], [-172.25, -13.5], [-172.03, -12.97], [-171.5, -12.75], [-172.03, -12.53], [-172.18, -12.18], [-172.5, -12.04], [-173.0, -12.25], [-173.25, -12.15], [-173.32, -12.18], [-173.46, -12.5], [-173.25, -13.0], [-173.35, -13.25], [-173.25, -13.5], [-173.35, -13.75], [-173.25, -14.0], [-173.47, -14.53], [-174.0, -14.75], [-174.53, -14.53], [-174.68, -14.18], [-174.93, -14.07], [-174.75, -14.5], [-174.85, -14.75], [-174.75, -15.0], [-174.97, -15.53], [-175.32, -15.68], [-175.47, -16.03], [-176.0, -16.25], [-176.53, -16.03], [-176.75, -15.5], [-176.65, -15.25], [-176.68, -15.18], [-177.03, -15.03], [-177.25, -14.5], [-177.15, -14.25], [-177.25, -14.0], [-177.15, -13.75], [-177.18, -13.68], [-177.53, -13.53], [-177.68, -13.18], [-178.03, -13.03], [-178.25, -12.5], [-178.15, -12.25], [-178.25, -12.0], [-178.15, -11.75], [-178.18, -11.68], [-178.53, -11.53], [-178.68, -11.18], [-179.03, -11.03], [-179.25, -10.5]], [[-171.25, -12.85], [-171.18, -12.82], [-171.12, -12.7], [-171.25, -12.65], [-171.5, -12.75], [-171.25, -12.85]], [[-175.35, -13.75], [-175.32, -13.82], [-175.07, -13.93], [-175.18, -13.68], [-175.3, -13.63], [-175.35, -13.75]], [[-175.68, -12.68], [-175.75, -12.65], [-175.82, -12.68], [-175.85, -12.75], [-175.82, -12.82], [-175.7, -12.87], [-175.65, -12.75], [-175.68, -12.68]]]]}, "2011-11-12T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-168.5, -11.75], [-168.25, -11.85], [-168.0, -11.75], [-167.47, -11.97], [-167.25, -12.5], [-167.47, -13.03], [-167.82, -13.18], [-167.97, -13.53], [-168.5, -13.75], [-169.03, -13.53], [-169.25, -13.0], [-169.15, -12.75], [-169.25, -12.5], [-169.03, -11.97], [-168.5, -11.75]]], [[[-179.03, -9.97], [-178.68, -9.82], [-178.65, -9.75], [-178.75, -9.5], [-178.53, -8.97], [-178.0, -8.75], [-177.47, -8.97], [-177.32, -9.32], [-176.97, -9.47], [-176.75, -10.0], [-176.85, -10.25], [-176.82, -10.32], [-176.47, -10.47], [-176.25, -11.0], [-176.35, -11.25], [-176.32, -11.32], [-175.97, -11.47], [-175.75, -12.0], [-175.85, -12.25], [-175.75, -12.5], [-175.85, -12.75], [-175.75, -13.0], [-175.85, -13.25], [-175.75, -13.5], [-175.85, -13.75], [-175.75, -14.0], [-175.85, -14.25], [-175.75, -14.5], [-175.97, -15.03], [-176.5, -15.25], [-177.03, -15.03], [-177.25, -14.5], [-177.15, -14.25], [-177.25, -14.0], [-177.15, -13.75], [-177.18, -13.68], [-177.53, -13.53], [-177.68, -13.18], [-178.03, -13.03], [-178.25, -12.5], [-178.15, -12.25], [-178.25, -12.0], [-178.15, -11.75], [-178.18, -11.68], [-178.53, -11.53], [-178.68, -11.18], [-179.03, -11.03], [-179.25, -10.5], [-179.03, -9.97]]]]}, "2011-11-13T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-179.25, -10.5], [-179.03, -9.97], [-178.68, -9.82], [-178.65, -9.75], [-178.75, -9.5], [-178.53, -8.97], [-178.0, -8.75], [-177.47, -8.97], [-177.32, -9.32], [-176.97, -9.47], [-176.75, -10.0], [-176.85, -10.25], [-176.75, -10.5], [-176.85, -10.75], [-176.75, -11.0], [-176.85, -11.25], [-176.75, -11.5], [-176.97, -12.03], [-177.5, -12.25], [-178.03, -12.03], [-178.18, -11.68], [-178.53, -11.53], [-178.68, -11.18], [-179.03, -11.03], [-179.25, -10.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.554853652206134}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.0396639993338523}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [26.442642791797596, 26.343643177617423, 26.30326213438451, 26.274199728729002, 26.02383635070845, 26.00167288258217, 25.84930789694795, 25.938438938714, 26.24751794268434]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [26.420868536652506, 26.201794226477546, 26.146659415284603, 26.170764248197486, 24.962259793678925, 25.175141425785228, 25.157495622685985, 25.548633160062252, 26.11516332145095]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.9458126810598344, -0.9568596357658308, -0.9564152386647916, -0.9324953752355687, -0.9927577181703128, -1.0229880873583272, -1.1563482434638779, -1.0813294320585987, -0.9622527022001969]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.9652855314773774, -1.0902671897245568, -1.068750365627693, -1.209644092392466, -1.2983909178507815, -1.378581142168514, -1.554853652206134, -1.529729885530287, -1.1524288268496434]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4791408449297578, -1.5001528142040335, -1.47632771307826, -1.386547698233427, -1.5522030516770473, -1.6087712301748218, -1.8530407599532763, -1.7856750945444955, -1.5752820488473904]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4824677910541944, -1.7050259513154442, -1.6332708208306204, -1.7694353238723761, -1.9117977081333437, -2.149362360678842, -2.3748435882639325, -2.489107036760255, -1.8255722437769724]}}