{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:17:48.137699", "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": "2020-Aug-06_to_2020-Aug-09_134.5_-27.0"}, "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": 2020080000277}, "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": "August 06 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "August 09 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 4}, "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": 158622.41092508798}, "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"]}, "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": []}, "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": -27.0}, "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": 134.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "134.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 133.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 138.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -29.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -23.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[132.823, -27.823], [132.854, -27.75], [132.75, -27.5], [132.854, -27.25], [132.823, -27.177], [132.47, -27.03], [132.25, -26.5], [132.457, -26.0], [132.25, -25.5], [132.47, -24.97], [132.823, -24.823], [132.97, -24.47], [133.5, -24.25], [133.75, -24.354], [134.0, -24.25], [134.25, -24.354], [134.323, -24.323], [134.47, -23.97], [135.0, -23.75], [135.25, -23.854], [135.5, -23.75], [135.75, -23.854], [135.823, -23.823], [135.97, -23.47], [136.323, -23.323], [136.47, -22.97], [137.0, -22.75], [137.5, -22.957], [138.0, -22.75], [138.25, -22.854], [138.5, -22.75], [139.03, -22.97], [139.25, -23.5], [139.03, -24.03], [138.625, -24.198], [138.75, -24.5], [138.646, -24.75], [138.75, -25.0], [138.646, -25.25], [138.75, -25.5], [138.53, -26.03], [138.0, -26.25], [137.5, -26.043], [137.177, -26.177], [137.03, -26.53], [136.677, -26.677], [136.53, -27.03], [136.177, -27.177], [136.03, -27.53], [135.5, -27.75], [135.25, -27.646], [135.0, -27.75], [134.751, -27.646], [134.75, -27.646], [134.677, -27.677], [134.646, -27.75], [134.646, -27.751], [134.75, -28.0], [134.646, -28.25], [134.75, -28.5], [134.53, -29.03], [134.0, -29.25], [133.75, -29.146], [133.677, -29.177], [133.53, -29.53], [133.0, -29.75], [132.47, -29.53], [132.25, -29.0], [132.354, -28.75], [132.25, -28.5], [132.47, -27.97], [132.823, -27.823]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["C.Australia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-08-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[132.35355339059328, -28.75], [132.25, -28.5], [132.46966991411009, -27.96966991411009], [132.82322330470336, -27.82322330470336], [132.85355339059328, -27.75], [132.75, -27.5], [132.85355339059328, -27.25], [132.75, -27.0], [132.96966991411009, -26.46966991411009], [133.32322330470336, -26.32322330470336], [133.46966991411009, -25.96966991411009], [134.0, -25.75], [134.25, -25.853553390593273], [134.5, -25.75], [134.75, -25.853553390593273], [135.0, -25.75], [135.25, -25.853553390593273], [135.5, -25.75], [135.75, -25.853553390593273], [135.82322330470336, -25.82322330470336], [135.96966991411009, -25.46966991411009], [136.5, -25.25], [137.03033008588991, -25.46966991411009], [137.25, -26.0], [137.03033008588991, -26.53033008588991], [136.67677669529664, -26.67677669529664], [136.53033008588991, -27.03033008588991], [136.17677669529664, -27.17677669529664], [136.03033008588991, -27.53033008588991], [135.5, -27.75], [135.25, -27.646446609406727], [135.0, -27.75], [134.75, -27.646446609406727], [134.67677669529664, -27.67677669529664], [134.64644660940672, -27.75], [134.75, -28.0], [134.64644660940672, -28.25], [134.75, -28.5], [134.53033008588991, -29.03033008588991], [134.0, -29.25], [133.75, -29.146446609406727], [133.67677669529664, -29.17677669529664], [133.53033008588991, -29.53033008588991], [133.0, -29.75], [132.46966991411009, -29.53033008588991], [132.25, -29.0], [132.35355339059328, -28.75]]]}, "2020-08-07T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[132.35355339059328, -28.75], [132.25, -28.5], [132.46966991411009, -27.96966991411009], [132.82322330470336, -27.82322330470336], [132.85355339059328, -27.75], [132.75, -27.5], [132.85355339059328, -27.25], [132.82322330470336, -27.17677669529664], [132.46966991411009, -27.03033008588991], [132.25, -26.5], [132.45710678118655, -26.0], [132.25, -25.5], [132.46966991411009, -24.96966991411009], [132.82322330470336, -24.82322330470336], [132.96966991411009, -24.46966991411009], [133.5, -24.25], [133.75, -24.353553390593273], [134.0, -24.25], [134.25, -24.353553390593273], [134.32322330470336, -24.32322330470336], [134.46966991411009, -23.96966991411009], [135.0, -23.75], [135.25, -23.853553390593273], [135.5, -23.75], [135.75, -23.853553390593273], [135.82322330470336, -23.82322330470336], [135.96966991411009, -23.46966991411009], [136.32322330470336, -23.32322330470336], [136.46966991411009, -22.96966991411009], [137.0, -22.75], [137.5, -22.957106781186546], [138.0, -22.75], [138.25, -22.853553390593273], [138.5, -22.75], [139.03033008588991, -22.96966991411009], [139.25, -23.5], [139.03033008588991, -24.03033008588991], [138.625, -24.19822330470336], [138.75, -24.5], [138.64644660940672, -24.75], [138.75, -25.0], [138.64644660940672, -25.25], [138.75, -25.5], [138.53033008588991, -26.03033008588991], [138.0, -26.25], [137.5, -26.042893218813454], [137.17677669529664, -26.17677669529664], [137.03033008588991, -26.53033008588991], [136.67677669529664, -26.67677669529664], [136.53033008588991, -27.03033008588991], [136.17677669529664, -27.17677669529664], [136.03033008588991, -27.53033008588991], [135.5, -27.75], [135.25, -27.646446609406727], [135.0, -27.75], [134.75, -27.646446609406727], [134.67677669529664, -27.67677669529664], [134.64644660940672, -27.75], [134.75, -28.0], [134.64644660940672, -28.25], [134.75, -28.5], [134.53033008588991, -29.03033008588991], [134.0, -29.25], [133.75, -29.146446609406727], [133.67677669529664, -29.17677669529664], [133.53033008588991, -29.53033008588991], [133.0, -29.75], [132.46966991411009, -29.53033008588991], [132.25, -29.0], [132.35355339059328, -28.75]]]}, "2020-08-08T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[132.35355339059328, -28.75], [132.25, -28.5], [132.46966991411009, -27.96966991411009], [132.82322330470336, -27.82322330470336], [132.85355339059328, -27.75], [132.75, -27.5], [132.85355339059328, -27.25], [132.82322330470336, -27.17677669529664], [132.46966991411009, -27.03033008588991], [132.25, -26.5], [132.45710678118655, -26.0], [132.25, -25.5], [132.46966991411009, -24.96966991411009], [132.82322330470336, -24.82322330470336], [132.96966991411009, -24.46966991411009], [133.5, -24.25], [133.75, -24.353553390593273], [134.0, -24.25], [134.25, -24.353553390593273], [134.32322330470336, -24.32322330470336], [134.46966991411009, -23.96966991411009], [135.0, -23.75], [135.25, -23.853553390593273], [135.5, -23.75], [135.75, -23.853553390593273], [135.82322330470336, -23.82322330470336], [135.96966991411009, -23.46966991411009], [136.32322330470336, -23.32322330470336], [136.46966991411009, -22.96966991411009], [137.0, -22.75], [137.5, -22.957106781186546], [138.0, -22.75], [138.25, -22.853553390593273], [138.5, -22.75], [139.03033008588991, -22.96966991411009], [139.25, -23.5], [139.03033008588991, -24.03033008588991], [138.625, -24.19822330470336], [138.75, -24.5], [138.64644660940672, -24.75], [138.75, -25.0], [138.64644660940672, -25.25], [138.75, -25.5], [138.53033008588991, -26.03033008588991], [138.0, -26.25], [137.5, -26.042893218813454], [137.17677669529664, -26.17677669529664], [137.03033008588991, -26.53033008588991], [136.67677669529664, -26.67677669529664], [136.53033008588991, -27.03033008588991], [136.17677669529664, -27.17677669529664], [136.03033008588991, -27.53033008588991], [135.5, -27.75], [135.25, -27.646446609406727], [135.0, -27.75], [134.75, -27.646446609406727], [134.67677669529664, -27.67677669529664], [134.64644660940672, -27.75], [134.75, -28.0], [134.64644660940672, -28.25], [134.75, -28.5], [134.53033008588991, -29.03033008588991], [134.0, -29.25], [133.75, -29.146446609406727], [133.67677669529664, -29.17677669529664], [133.53033008588991, -29.53033008588991], [133.0, -29.75], [132.46966991411009, -29.53033008588991], [132.25, -29.0], [132.35355339059328, -28.75]]]}, "2020-08-09T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[132.45710678118655, -26.0], [132.25, -25.5], [132.46966991411009, -24.96966991411009], [132.82322330470336, -24.82322330470336], [132.96966991411009, -24.46966991411009], [133.5, -24.25], [133.75, -24.353553390593273], [134.0, -24.25], [134.25, -24.353553390593273], [134.32322330470336, -24.32322330470336], [134.46966991411009, -23.96966991411009], [135.0, -23.75], [135.25, -23.853553390593273], [135.5, -23.75], [135.75, -23.853553390593273], [135.82322330470336, -23.82322330470336], [135.96966991411009, -23.46966991411009], [136.32322330470336, -23.32322330470336], [136.46966991411009, -22.96966991411009], [137.0, -22.75], [137.5, -22.957106781186546], [138.0, -22.75], [138.25, -22.853553390593273], [138.5, -22.75], [139.03033008588991, -22.96966991411009], [139.25, -23.5], [139.03033008588991, -24.03033008588991], [138.625, -24.19822330470336], [138.75, -24.5], [138.64644660940672, -24.75], [138.75, -25.0], [138.64644660940672, -25.25], [138.75, -25.5], [138.53033008588991, -26.03033008588991], [138.0, -26.25], [137.5, -26.042893218813454], [137.17677669529664, -26.17677669529664], [137.03033008588991, -26.53033008588991], [136.5, -26.75], [136.19822330470336, -26.625], [136.03033008588991, -27.03033008588991], [135.5, -27.25], [135.25, -27.146446609406727], [135.17677669529664, -27.17677669529664], [135.03033008588991, -27.53033008588991], [134.67677669529664, -27.67677669529664], [134.53033008588991, -28.03033008588991], [134.17677669529664, -28.17677669529664], [134.03033008588991, -28.53033008588991], [133.5, -28.75], [132.96966991411009, -28.53033008588991], [132.75, -28.0], [132.85355339059328, -27.75], [132.75, -27.5], [132.85355339059328, -27.25], [132.82322330470336, -27.17677669529664], [132.46966991411009, -27.03033008588991], [132.25, -26.5], [132.45710678118655, -26.0]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -6.104959332514852}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -4.574345834673953}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [9.857975736963226, 9.533552615488247, 10.325228036960652, 10.701068882143772]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [9.01686056382539, 7.834038264559297, 8.923924526025814, 9.542089989570798]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-4.238862313210321, -5.170200268977919, -4.397266441307613, -4.217284805579353]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.895749156355919, -6.104959332514852, -5.348152804739584, -4.950738977338801]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4394355380958899, -1.6582556804598994, -1.387535338694003, -1.292058103099231]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.655950788330145, -2.072663059352345, -1.5936539383771033, -1.5086399229135288]}}