{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:45:36.193964", "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": "2010-Sep-05_to_2010-Sep-10_188.0_-13.5"}, "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": 2010090000284}, "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": "September 05 2010"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "September 10 2010"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 6}, "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": 51054.51039242024}, "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": ["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": -13.5}, "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": 188.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "188.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 186.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 190.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -15.25}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -12.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2010-09-05T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-171.5, -13.25], [-170.97, -13.47], [-170.75, -14.0], [-170.97, -14.53], [-171.5, -14.75], [-172.03, -14.53], [-172.25, -14.0], [-172.03, -13.47], [-171.5, -13.25]]]]}, "2010-09-06T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-172.0, -12.25], [-171.75, -12.35], [-171.5, -12.25], [-170.97, -12.47], [-170.82, -12.82], [-170.47, -12.97], [-170.25, -13.5], [-170.35, -13.75], [-170.32, -13.82], [-170.25, -13.85], [-170.0, -13.75], [-169.75, -13.85], [-169.5, -13.75], [-168.97, -13.97], [-168.75, -14.5], [-168.97, -15.03], [-169.32, -15.18], [-169.47, -15.53], [-170.0, -15.75], [-170.53, -15.53], [-170.68, -15.18], [-170.75, -15.15], [-171.0, -15.25], [-171.53, -15.03], [-171.68, -14.68], [-172.03, -14.53], [-172.18, -14.18], [-172.25, -14.15], [-172.5, -14.25], [-173.03, -14.03], [-173.25, -13.5], [-173.03, -12.97], [-172.68, -12.82], [-172.53, -12.47], [-172.0, -12.25]]]]}, "2010-09-07T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-174.03, -13.03], [-174.25, -12.5], [-174.03, -11.97], [-173.5, -11.75], [-172.97, -11.97], [-172.8, -12.37], [-172.5, -12.25], [-172.25, -12.35], [-172.0, -12.25], [-171.75, -12.35], [-171.5, -12.25], [-170.97, -12.47], [-170.82, -12.82], [-170.47, -12.97], [-170.25, -13.5], [-170.35, -13.75], [-170.32, -13.82], [-170.25, -13.85], [-170.0, -13.75], [-169.75, -13.85], [-169.5, -13.75], [-168.97, -13.97], [-168.75, -14.5], [-168.97, -15.03], [-169.32, -15.18], [-169.47, -15.53], [-170.0, -15.75], [-170.53, -15.53], [-170.68, -15.18], [-170.75, -15.15], [-171.0, -15.25], [-171.53, -15.03], [-171.68, -14.68], [-172.03, -14.53], [-172.18, -14.18], [-172.25, -14.15], [-172.5, -14.25], [-173.03, -14.03], [-173.25, -13.5], [-173.15, -13.25], [-173.2, -13.13], [-173.5, -13.25], [-174.03, -13.03]]]]}, "2010-09-08T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-174.03, -11.97], [-173.5, -11.75], [-172.97, -11.97], [-172.82, -12.32], [-172.75, -12.35], [-172.5, -12.25], [-172.25, -12.35], [-172.0, -12.25], [-171.75, -12.35], [-171.5, -12.25], [-170.97, -12.47], [-170.82, -12.82], [-170.47, -12.97], [-170.25, -13.5], [-170.35, -13.75], [-170.32, -13.82], [-170.25, -13.85], [-170.0, -13.75], [-169.75, -13.85], [-169.5, -13.75], [-168.97, -13.97], [-168.75, -14.5], [-168.97, -15.03], [-169.32, -15.18], [-169.47, -15.53], [-170.0, -15.75], [-170.53, -15.53], [-170.68, -15.18], [-170.75, -15.15], [-171.0, -15.25], [-171.53, -15.03], [-171.68, -14.68], [-172.03, -14.53], [-172.18, -14.18], [-172.25, -14.15], [-172.5, -14.25], [-173.03, -14.03], [-173.18, -13.68], [-173.25, -13.65], [-173.5, -13.75], [-174.03, -13.53], [-174.25, -13.0], [-174.15, -12.75], [-174.25, -12.5], [-174.03, -11.97]]]]}, "2010-09-09T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-174.03, -11.97], [-173.5, -11.75], [-172.97, -11.97], [-172.82, -12.32], [-172.75, -12.35], [-172.5, -12.25], [-172.25, -12.35], [-172.0, -12.25], [-171.47, -12.47], [-171.25, -13.0], [-171.35, -13.25], [-171.25, -13.5], [-171.47, -14.03], [-172.0, -14.25], [-172.53, -14.03], [-172.68, -13.68], [-172.75, -13.65], [-173.0, -13.75], [-173.25, -13.65], [-173.5, -13.75], [-174.03, -13.53], [-174.25, -13.0], [-174.15, -12.75], [-174.25, -12.5], [-174.03, -11.97]]]]}, "2010-09-10T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-174.03, -11.97], [-173.5, -11.75], [-172.97, -11.97], [-172.82, -12.32], [-172.75, -12.35], [-172.5, -12.25], [-172.25, -12.35], [-172.0, -12.25], [-171.47, -12.47], [-171.25, -13.0], [-171.35, -13.25], [-171.25, -13.5], [-171.47, -14.03], [-172.0, -14.25], [-172.53, -14.03], [-172.68, -13.68], [-172.75, -13.65], [-173.0, -13.75], [-173.25, -13.65], [-173.5, -13.75], [-174.03, -13.53], [-174.25, -13.0], [-174.15, -12.75], [-174.25, -12.5], [-174.03, -11.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.284484538938102}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.8941937135695042}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.688818300140213, 25.155191340180465, 25.228704139154956, 25.41888956793781, 25.947719026576408, 25.578636756224796]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.688818300140213, 23.706453685240433, 23.600075471491607, 23.571807685602835, 25.550237736418183, 25.306772572161208]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.7197054043582511, -0.9117039268037519, -0.9621508213992229, -0.843486281634097, -0.6906000714860548, -1.0627082327566484]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.7197054043582511, -1.2575082869254857, -1.2212903508836348, -0.9505022507450462, -0.8500385170355003, -1.284484538938102]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3233774383628123, -1.7226050436398617, -1.877330536233116, -1.6726602074379695, -1.4752898526991511, -2.2088593249544117]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.3233774383628123, -2.324817859521525, -2.4411583601117015, -2.2608939468428018, -1.7651694475132336, -2.8323474534626243]}}