{"version_information": {"version": "det_AHW_tail10.0_v1.1", "compiled_date": "2026-07-16 09:09:54.621224", "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": "2018-Jan-27_to_2018-Feb-02_142.5_-12.0"}, "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": 2018010000956}, "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 27 2018"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "February 02 2018"}, "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": 69251.32759519579}, "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": ["Australia"]}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.Australia"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Australia"]}, "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": ["Coral Sea"]}, "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": -12.0}, "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": 142.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "142.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 141.75}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 143.75}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -14.75}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.25}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2018-01-27T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -11.47], [142.5, -11.25], [142.75, -11.35], [143.0, -11.25], [143.53, -11.47], [143.75, -12.0], [143.53, -12.53], [143.18, -12.68], [143.03, -13.03], [142.5, -13.25], [141.97, -13.03], [141.75, -12.5], [141.85, -12.25], [141.75, -12.0], [141.97, -11.47]]]]}, "2018-01-28T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.97, -11.47], [142.5, -11.25], [142.75, -11.35], [143.0, -11.25], [143.53, -11.47], [143.75, -12.0], [143.53, -12.53], [143.18, -12.68], [143.03, -13.03], [142.5, -13.25], [141.97, -13.03], [141.75, -12.5], [141.85, -12.25], [141.75, -12.0], [141.97, -11.47]]]]}, "2018-01-29T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, -13.75], [141.25, -13.5], [141.35, -13.25], [141.25, -13.0], [141.35, -12.75], [141.25, -12.5], [141.35, -12.25], [141.25, -12.0], [141.47, -11.47], [141.82, -11.32], [141.97, -10.97], [142.5, -10.75], [143.03, -10.97], [143.18, -11.32], [143.53, -11.47], [143.75, -12.0], [143.65, -12.25], [143.68, -12.32], [144.03, -12.47], [144.25, -13.0], [144.15, -13.25], [144.25, -13.5], [144.03, -14.03], [143.68, -14.18], [143.65, -14.25], [143.75, -14.5], [143.53, -15.03], [143.0, -15.25], [142.75, -15.15], [142.5, -15.25], [142.25, -15.15], [142.0, -15.25], [141.47, -15.03], [141.25, -14.5], [141.35, -14.25], [141.25, -14.0], [141.35, -13.75]]]]}, "2018-01-30T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, -13.75], [141.25, -13.5], [141.35, -13.25], [141.25, -13.0], [141.35, -12.75], [141.25, -12.5], [141.35, -12.25], [141.25, -12.0], [141.47, -11.47], [141.82, -11.32], [141.97, -10.97], [142.5, -10.75], [143.03, -10.97], [143.18, -11.32], [143.53, -11.47], [143.75, -12.0], [143.65, -12.25], [143.68, -12.32], [144.03, -12.47], [144.25, -13.0], [144.15, -13.25], [144.25, -13.5], [144.03, -14.03], [143.68, -14.18], [143.65, -14.25], [143.75, -14.5], [143.53, -15.03], [143.0, -15.25], [142.75, -15.15], [142.5, -15.25], [142.25, -15.15], [142.0, -15.25], [141.47, -15.03], [141.25, -14.5], [141.35, -14.25], [141.25, -14.0], [141.35, -13.75]]]]}, "2018-01-31T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.35, -13.75], [141.25, -13.5], [141.35, -13.25], [141.25, -13.0], [141.35, -12.75], [141.25, -12.5], [141.35, -12.25], [141.25, -12.0], [141.47, -11.47], [141.82, -11.32], [141.97, -10.97], [142.5, -10.75], [142.75, -10.85], [143.0, -10.75], [143.53, -10.97], [143.68, -11.32], [144.03, -11.47], [144.25, -12.0], [144.04, -12.5], [144.25, -13.0], [144.15, -13.25], [144.25, -13.5], [144.03, -14.03], [143.68, -14.18], [143.65, -14.25], [143.75, -14.5], [143.53, -15.03], [143.0, -15.25], [142.75, -15.15], [142.5, -15.25], [142.25, -15.15], [142.0, -15.25], [141.47, -15.03], [141.25, -14.5], [141.35, -14.25], [141.25, -14.0], [141.35, -13.75]]]]}, "2018-02-01T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[141.47, -11.47], [141.82, -11.32], [141.97, -10.97], [142.5, -10.75], [142.75, -10.85], [143.0, -10.75], [143.53, -10.97], [143.68, -11.32], [144.03, -11.47], [144.25, -12.0], [144.03, -12.53], [143.68, -12.68], [143.65, -12.75], [143.75, -13.0], [143.53, -13.53], [143.18, -13.68], [143.03, -14.03], [142.5, -14.25], [141.97, -14.03], [141.75, -13.5], [141.85, -13.25], [141.82, -13.18], [141.47, -13.03], [141.25, -12.5], [141.35, -12.25], [141.25, -12.0], [141.47, -11.47]]]]}, "2018-02-02T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[142.25, -11.5], [142.47, -10.97], [143.0, -10.75], [143.53, -10.97], [143.68, -11.32], [144.03, -11.47], [144.25, -12.0], [144.03, -12.53], [143.5, -12.75], [142.97, -12.53], [142.82, -12.18], [142.47, -12.03], [142.25, -11.5]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.177860969518804}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -2.0688458625948742}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.49834318838083, 25.62887088794389, 25.06710990604296, 24.485099521824395, 25.205182101617197, 25.411402034665116, 26.347451479974325]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.13531944982708, 25.307772290068954, 24.223361961981823, 23.588521657402737, 24.17257199591694, 24.66090701142815, 25.960898272432303]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.6614071930580394, -1.5149096521416634, -2.0743101975325193, -2.650210957968506, -1.9457945033712165, -1.6931718374978761, -1.018333945965594]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.9140959148646175, -1.6615453244481273, -2.5484898202216755, -3.177860969518804, -2.7180558033276156, -2.218533020783923, -1.3303927903083945]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6760927503099696, -1.5700007801582114, -1.9201049835813198, -2.4750423217542825, -1.867169382196788, -1.7688287591598695, -1.8006252795309656]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.7280690123399458, -1.6530526029049126, -2.1733389065526025, -2.8166436307129215, -2.36862413221685, -2.1733238647484314, -2.3415171901584824]}}