{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 08:48:51.292051", "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-16_to_2011-Nov-20_179.0_-16.0"}, "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": 2011110000824}, "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 16 2011"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 20 2011"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 56400.262789301916}, "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": ["Fiji"]}, "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": -16.0}, "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": 179.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "179.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 176.25}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 179.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -17.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -15.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2011-11-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[178.47, -16.53], [178.25, -16.0], [178.47, -15.47], [179.0, -15.25], [179.25, -15.35], [179.5, -15.25], [180.0, -15.46], [180.0, -16.54], [179.5, -16.75], [179.25, -16.65], [179.0, -16.75], [178.47, -16.53]]], [[[-179.97, -15.47], [-179.75, -16.0], [-179.97, -16.53], [-180.0, -16.54], [-180.0, -15.46], [-179.97, -15.47]]]]}, "2011-11-17T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[175.75, -15.5], [175.97, -14.97], [176.5, -14.75], [176.75, -14.85], [177.0, -14.75], [177.25, -14.85], [177.5, -14.75], [177.75, -14.85], [178.0, -14.75], [178.25, -14.85], [178.5, -14.75], [179.03, -14.97], [179.18, -15.32], [179.25, -15.35], [179.5, -15.25], [180.0, -15.46], [180.0, -16.54], [179.68, -16.68], [179.53, -17.03], [179.0, -17.25], [178.75, -17.15], [178.5, -17.25], [178.25, -17.15], [178.0, -17.25], [177.75, -17.15], [177.5, -17.25], [176.97, -17.03], [176.82, -16.68], [176.47, -16.53], [176.32, -16.18], [175.97, -16.03], [175.75, -15.5]]], [[[-179.97, -15.47], [-179.75, -16.0], [-179.97, -16.53], [-180.0, -16.54], [-180.0, -15.46], [-179.97, -15.47]]]]}, "2011-11-18T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[175.75, -15.5], [175.97, -14.97], [176.5, -14.75], [176.75, -14.85], [177.0, -14.75], [177.25, -14.85], [177.5, -14.75], [177.75, -14.85], [178.0, -14.75], [178.25, -14.85], [178.5, -14.75], [179.03, -14.97], [179.18, -15.32], [179.25, -15.35], [179.5, -15.25], [180.0, -15.46], [180.0, -17.04], [179.5, -17.25], [179.25, -17.15], [179.0, -17.25], [178.75, -17.15], [178.63, -17.2], [178.75, -17.5], [178.53, -18.03], [178.0, -18.25], [177.47, -18.03], [177.32, -17.68], [177.25, -17.65], [177.0, -17.75], [176.47, -17.53], [176.25, -17.0], [176.46, -16.5], [176.32, -16.18], [175.97, -16.03], [175.75, -15.5]]], [[[-179.97, -15.47], [-179.75, -16.0], [-179.85, -16.25], [-179.75, -16.5], [-179.97, -17.03], [-180.0, -17.04], [-180.0, -15.46], [-179.97, -15.47]]]]}, "2011-11-19T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[175.75, -15.5], [175.97, -14.97], [176.5, -14.75], [176.75, -14.85], [177.0, -14.75], [177.25, -14.85], [177.5, -14.75], [177.75, -14.85], [178.0, -14.75], [178.25, -14.85], [178.5, -14.75], [179.03, -14.97], [179.18, -15.32], [179.25, -15.35], [179.5, -15.25], [180.0, -15.46], [180.0, -17.04], [179.5, -17.25], [179.25, -17.15], [179.0, -17.25], [178.75, -17.15], [178.63, -17.2], [178.75, -17.5], [178.53, -18.03], [178.0, -18.25], [177.47, -18.03], [177.32, -17.68], [177.25, -17.65], [177.0, -17.75], [176.47, -17.53], [176.25, -17.0], [176.46, -16.5], [176.32, -16.18], [175.97, -16.03], [175.75, -15.5]]], [[[-179.97, -15.47], [-179.75, -16.0], [-179.85, -16.25], [-179.75, -16.5], [-179.97, -17.03], [-180.0, -17.04], [-180.0, -15.46], [-179.97, -15.47]]]]}, "2011-11-20T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[176.75, -16.0], [176.85, -15.75], [176.75, -15.5], [176.97, -14.97], [177.5, -14.75], [177.75, -14.85], [178.0, -14.75], [178.53, -14.97], [178.68, -15.32], [178.75, -15.35], [179.0, -15.25], [179.53, -15.47], [179.68, -15.82], [180.0, -15.96], [180.0, -17.04], [179.5, -17.25], [179.25, -17.15], [179.0, -17.25], [178.75, -17.15], [178.63, -17.2], [178.75, -17.5], [178.53, -18.03], [178.0, -18.25], [177.47, -18.03], [177.32, -17.68], [177.25, -17.65], [177.0, -17.75], [176.47, -17.53], [176.25, -17.0], [176.47, -16.47], [176.82, -16.32], [176.85, -16.25], [176.75, -16.0]]], [[[-179.97, -15.97], [-179.75, -16.5], [-179.97, -17.03], [-180.0, -17.04], [-180.0, -15.96], [-179.97, -15.97]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.051472729667978}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9988598061478614}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.690398876281904, 25.268670841004564, 25.235168697976462, 24.97037651264185, 25.086113355054465]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.65817031514979, 24.572254251218624, 22.29827622918947, 21.606427571828306, 22.43231774480722]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.6619380946612807, -1.0511296181536258, -0.8770895716070539, -1.1596461081720002, -0.93803773191239]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-0.6929193207278672, -1.3490729593527817, -1.3640111173486957, -2.051472729667978, -1.418466836001926]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.3934650108465085, -2.030682520492727, -1.61068614715135, -2.0720815926419522, -1.5987641999423385]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4735695770011148, -2.6434239994937316, -2.0319747273743687, -2.589055957755121, -2.3170043798261286]}}