{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:18:44.361499", "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-Oct-23_to_2020-Oct-26_315.0_-18.0"}, "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": 2020100000669}, "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": "October 23 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "October 26 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": 175909.55645770344}, "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": ["Brazil"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America"]}, "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": -18.0}, "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": 315.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "315.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 312.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 319.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -20.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -16.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-48.75, -17.5], [-48.646, -17.25], [-48.75, -17.0], [-48.646, -16.75], [-48.75, -16.5], [-48.53, -15.97], [-48.0, -15.75], [-47.47, -15.97], [-47.323, -16.323], [-47.0, -16.457], [-46.677, -16.323], [-46.53, -15.97], [-46.0, -15.75], [-45.47, -15.97], [-45.25, -16.5], [-45.354, -16.75], [-45.323, -16.823], [-45.25, -16.854], [-45.0, -16.75], [-44.75, -16.854], [-44.5, -16.75], [-44.0, -16.957], [-43.5, -16.75], [-42.97, -16.97], [-42.75, -17.5], [-42.854, -17.75], [-42.75, -18.0], [-42.875, -18.302], [-42.75, -18.354], [-42.677, -18.323], [-42.53, -17.97], [-42.0, -17.75], [-41.47, -17.97], [-41.323, -18.323], [-41.25, -18.354], [-41.0, -18.25], [-40.47, -18.47], [-40.25, -19.0], [-40.354, -19.25], [-40.25, -19.5], [-40.47, -20.03], [-40.823, -20.177], [-40.97, -20.53], [-41.5, -20.75], [-41.75, -20.646], [-42.0, -20.75], [-42.25, -20.646], [-42.5, -20.75], [-42.75, -20.646], [-43.0, -20.75], [-43.25, -20.646], [-43.5, -20.75], [-44.03, -20.53], [-44.177, -20.177], [-44.53, -20.03], [-44.677, -19.677], [-44.75, -19.646], [-45.0, -19.75], [-45.25, -19.646], [-45.5, -19.75], [-45.75, -19.646], [-46.0, -19.75], [-46.25, -19.646], [-46.5, -19.75], [-46.75, -19.646], [-47.0, -19.75], [-47.53, -19.53], [-47.677, -19.177], [-47.75, -19.146], [-48.0, -19.25], [-48.53, -19.03], [-48.75, -18.5], [-48.646, -18.25], [-48.75, -18.0], [-48.646, -17.75], [-48.75, -17.5]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.E.South-America", "S.E.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-10-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-48.64644660940672, -18.25], [-48.75, -18.0], [-48.64644660940672, -17.75], [-48.75, -17.5], [-48.64644660940672, -17.25], [-48.75, -17.0], [-48.64644660940672, -16.75], [-48.75, -16.5], [-48.53033008588989, -15.969669914110089], [-48.0, -15.75], [-47.46966991411011, -15.969669914110089], [-47.32322330470339, -16.32322330470336], [-47.0, -16.457106781186557], [-46.67677669529661, -16.32322330470336], [-46.53033008588989, -15.969669914110089], [-46.0, -15.75], [-45.46966991411011, -15.969669914110089], [-45.25, -16.5], [-45.35355339059328, -16.75], [-45.32322330470339, -16.82322330470336], [-45.25, -16.853553390593277], [-45.0, -16.75], [-44.46966991411011, -16.96966991411009], [-44.32322330470339, -17.32322330470336], [-44.25, -17.353553390593277], [-44.17677669529661, -17.32322330470336], [-44.03033008588989, -16.96966991411009], [-43.5, -16.75], [-42.96966991411011, -16.96966991411009], [-42.75, -17.5], [-42.85355339059328, -17.75], [-42.75, -18.0], [-42.875, -18.301776695296635], [-42.75, -18.353553390593277], [-42.67677669529661, -18.32322330470336], [-42.53033008588989, -17.96966991411009], [-42.0, -17.75], [-41.46966991411011, -17.96966991411009], [-41.32322330470339, -18.32322330470336], [-41.25, -18.353553390593277], [-41.0, -18.25], [-40.46966991411011, -18.46966991411009], [-40.25, -19.0], [-40.35355339059328, -19.25], [-40.25, -19.5], [-40.46966991411011, -20.03033008588991], [-40.82322330470339, -20.17677669529664], [-40.96966991411011, -20.53033008588991], [-41.5, -20.75], [-41.75, -20.646446609406723], [-42.0, -20.75], [-42.25, -20.646446609406723], [-42.5, -20.75], [-42.75, -20.646446609406723], [-43.0, -20.75], [-43.25, -20.646446609406723], [-43.5, -20.75], [-44.03033008588989, -20.53033008588991], [-44.17677669529661, -20.17677669529664], [-44.53033008588989, -20.03033008588991], [-44.67677669529661, -19.67677669529664], [-44.75, -19.646446609406723], [-45.0, -19.75], [-45.25, -19.646446609406723], [-45.5, -19.75], [-45.75, -19.646446609406723], [-46.0, -19.75], [-46.25, -19.646446609406723], [-46.5, -19.75], [-46.75, -19.646446609406723], [-47.0, -19.75], [-47.53033008588989, -19.53033008588991], [-47.67677669529661, -19.17677669529664], [-47.75, -19.146446609406723], [-48.0, -19.25], [-48.53033008588989, -19.03033008588991], [-48.75, -18.5], [-48.64644660940672, -18.25]]]}, "2020-10-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-48.64644660940672, -18.25], [-48.75, -18.0], [-48.64644660940672, -17.75], [-48.75, -17.5], [-48.64644660940672, -17.25], [-48.75, -17.0], [-48.64644660940672, -16.75], [-48.75, -16.5], [-48.53033008588989, -15.969669914110089], [-48.0, -15.75], [-47.46966991411011, -15.969669914110089], [-47.32322330470339, -16.32322330470336], [-47.0, -16.457106781186557], [-46.67677669529661, -16.32322330470336], [-46.53033008588989, -15.969669914110089], [-46.0, -15.75], [-45.46966991411011, -15.969669914110089], [-45.25, -16.5], [-45.35355339059328, -16.75], [-45.32322330470339, -16.82322330470336], [-45.25, -16.853553390593277], [-45.0, -16.75], [-44.75, -16.853553390593277], [-44.5, -16.75], [-44.0, -16.957106781186557], [-43.5, -16.75], [-42.96966991411011, -16.96966991411009], [-42.75, -17.5], [-42.85355339059328, -17.75], [-42.75, -18.0], [-42.875, -18.301776695296635], [-42.75, -18.353553390593277], [-42.67677669529661, -18.32322330470336], [-42.53033008588989, -17.96966991411009], [-42.0, -17.75], [-41.46966991411011, -17.96966991411009], [-41.32322330470339, -18.32322330470336], [-41.25, -18.353553390593277], [-41.0, -18.25], [-40.46966991411011, -18.46966991411009], [-40.25, -19.0], [-40.35355339059328, -19.25], [-40.25, -19.5], [-40.46966991411011, -20.03033008588991], [-40.82322330470339, -20.17677669529664], [-40.96966991411011, -20.53033008588991], [-41.5, -20.75], [-41.75, -20.646446609406723], [-42.0, -20.75], [-42.25, -20.646446609406723], [-42.5, -20.75], [-42.75, -20.646446609406723], [-43.0, -20.75], [-43.25, -20.646446609406723], [-43.5, -20.75], [-44.03033008588989, -20.53033008588991], [-44.17677669529661, -20.17677669529664], [-44.53033008588989, -20.03033008588991], [-44.67677669529661, -19.67677669529664], [-44.75, -19.646446609406723], [-45.0, -19.75], [-45.25, -19.646446609406723], [-45.5, -19.75], [-45.75, -19.646446609406723], [-46.0, -19.75], [-46.25, -19.646446609406723], [-46.5, -19.75], [-46.75, -19.646446609406723], [-47.0, -19.75], [-47.53033008588989, -19.53033008588991], [-47.67677669529661, -19.17677669529664], [-47.75, -19.146446609406723], [-48.0, -19.25], [-48.53033008588989, -19.03033008588991], [-48.75, -18.5], [-48.64644660940672, -18.25]]]}, "2020-10-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-48.64644660940672, -18.25], [-48.75, -18.0], [-48.64644660940672, -17.75], [-48.75, -17.5], [-48.64644660940672, -17.25], [-48.75, -17.0], [-48.64644660940672, -16.75], [-48.75, -16.5], [-48.53033008588989, -15.969669914110089], [-48.0, -15.75], [-47.46966991411011, -15.969669914110089], [-47.32322330470339, -16.32322330470336], [-47.0, -16.457106781186557], [-46.67677669529661, -16.32322330470336], [-46.53033008588989, -15.969669914110089], [-46.0, -15.75], [-45.46966991411011, -15.969669914110089], [-45.25, -16.5], [-45.35355339059328, -16.75], [-45.32322330470339, -16.82322330470336], [-45.25, -16.853553390593277], [-45.0, -16.75], [-44.75, -16.853553390593277], [-44.5, -16.75], [-44.0, -16.957106781186557], [-43.5, -16.75], [-42.96966991411011, -16.96966991411009], [-42.75, -17.5], [-42.85355339059328, -17.75], [-42.75, -18.0], [-42.875, -18.301776695296635], [-42.75, -18.353553390593277], [-42.67677669529661, -18.32322330470336], [-42.53033008588989, -17.96966991411009], [-42.0, -17.75], [-41.46966991411011, -17.96966991411009], [-41.32322330470339, -18.32322330470336], [-41.25, -18.353553390593277], [-41.0, -18.25], [-40.46966991411011, -18.46966991411009], [-40.25, -19.0], [-40.35355339059328, -19.25], [-40.25, -19.5], [-40.46966991411011, -20.03033008588991], [-40.82322330470339, -20.17677669529664], [-40.96966991411011, -20.53033008588991], [-41.5, -20.75], [-41.75, -20.646446609406723], [-42.0, -20.75], [-42.25, -20.646446609406723], [-42.5, -20.75], [-42.75, -20.646446609406723], [-43.0, -20.75], [-43.25, -20.646446609406723], [-43.5, -20.75], [-44.03033008588989, -20.53033008588991], [-44.17677669529661, -20.17677669529664], [-44.53033008588989, -20.03033008588991], [-44.67677669529661, -19.67677669529664], [-44.75, -19.646446609406723], [-45.0, -19.75], [-45.25, -19.646446609406723], [-45.5, -19.75], [-45.75, -19.646446609406723], [-46.0, -19.75], [-46.25, -19.646446609406723], [-46.5, -19.75], [-46.75, -19.646446609406723], [-47.0, -19.75], [-47.53033008588989, -19.53033008588991], [-47.67677669529661, -19.17677669529664], [-47.75, -19.146446609406723], [-48.0, -19.25], [-48.53033008588989, -19.03033008588991], [-48.75, -18.5], [-48.64644660940672, -18.25]]]}, "2020-10-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-45.25, -17.5], [-45.03033008588989, -16.96966991411009], [-44.5, -16.75], [-43.96966991411011, -16.96966991411009], [-43.75, -17.5], [-43.96966991411011, -18.03033008588991], [-44.5, -18.25], [-45.03033008588989, -18.03033008588991], [-45.25, -17.5]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -5.627954745215845}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -3.7872640364011962}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [20.992927318427576, 20.053354622296524, 21.066604739231536, 22.383893769004146]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [17.658044390372595, 17.015208419679425, 18.21875181611557, 22.383893769004146]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-3.4311563591443854, -4.447652960269861, -3.487658884573824, -3.1505906720753956]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-4.649210101198264, -5.627954745215845, -4.878201792168966, -3.1505906720753956]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4937086225967449, -1.9844663185700975, -1.6406586248180868, -1.3714590562743778]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.955255907080623, -2.301231375397316, -2.090236501850827, -1.3714590562743778]}}