{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:53.319104", "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-Dec-26_to_2020-Dec-29_296.0_-11.5"}, "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": 2020120001008}, "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": "December 26 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "December 29 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": 57399.68013489513}, "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": ["Bolivia, Plurinational State of", "Brazil"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["America", "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": -11.5}, "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": 296.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "296.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 296.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -13.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -11.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-67.5, -11.25], [-67.25, -11.354], [-67.0, -11.25], [-66.5, -11.457], [-66.177, -11.323], [-66.03, -10.97], [-65.5, -10.75], [-65.25, -10.854], [-65.0, -10.75], [-64.75, -10.854], [-64.5, -10.75], [-64.25, -10.854], [-64.0, -10.75], [-63.47, -10.97], [-63.25, -11.5], [-63.47, -12.03], [-63.823, -12.177], [-63.854, -12.25], [-63.75, -12.5], [-63.97, -13.03], [-64.323, -13.177], [-64.47, -13.53], [-65.0, -13.75], [-65.25, -13.646], [-65.5, -13.75], [-65.75, -13.646], [-66.0, -13.75], [-66.53, -13.53], [-66.677, -13.177], [-66.75, -13.146], [-67.0, -13.25], [-67.25, -13.146], [-67.5, -13.25], [-68.03, -13.03], [-68.25, -12.5], [-68.146, -12.25], [-68.25, -12.0], [-68.03, -11.47], [-67.5, -11.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["South-American-Monsoon"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-12-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-66.17677669529661, -11.323223304703363], [-66.03033008588989, -10.969669914110089], [-65.5, -10.75], [-65.25, -10.853553390593278], [-65.0, -10.75], [-64.75, -10.853553390593278], [-64.5, -10.75], [-64.25, -10.853553390593278], [-64.0, -10.75], [-63.46966991411011, -10.969669914110089], [-63.25, -11.5], [-63.46966991411011, -12.030330085889911], [-63.82322330470339, -12.176776695296637], [-63.85355339059328, -12.25], [-63.75, -12.5], [-63.96966991411011, -13.030330085889911], [-64.5, -13.25], [-64.75, -13.146446609406722], [-65.0, -13.25], [-65.53033008588989, -13.030330085889911], [-65.67677669529661, -12.676776695296637], [-65.75, -12.646446609406722], [-66.0, -12.75], [-66.53033008588989, -12.530330085889911], [-66.75, -12.0], [-66.53033008588989, -11.469669914110089], [-66.17677669529661, -11.323223304703363]]]}, "2020-12-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-68.14644660940672, -12.25], [-68.25, -12.0], [-68.03033008588989, -11.469669914110089], [-67.5, -11.25], [-67.25, -11.353553390593278], [-67.0, -11.25], [-66.5, -11.457106781186557], [-66.17677669529661, -11.323223304703363], [-66.03033008588989, -10.969669914110089], [-65.5, -10.75], [-65.25, -10.853553390593278], [-65.0, -10.75], [-64.75, -10.853553390593278], [-64.5, -10.75], [-64.25, -10.853553390593278], [-64.0, -10.75], [-63.46966991411011, -10.969669914110089], [-63.25, -11.5], [-63.46966991411011, -12.030330085889911], [-63.82322330470339, -12.176776695296637], [-63.85355339059328, -12.25], [-63.75, -12.5], [-63.96966991411011, -13.030330085889911], [-64.32322330470339, -13.176776695296637], [-64.46966991411011, -13.530330085889911], [-65.0, -13.75], [-65.25, -13.646446609406722], [-65.5, -13.75], [-65.75, -13.646446609406722], [-66.0, -13.75], [-66.53033008588989, -13.530330085889911], [-66.67677669529661, -13.176776695296637], [-66.75, -13.146446609406722], [-67.0, -13.25], [-67.25, -13.146446609406722], [-67.5, -13.25], [-68.03033008588989, -13.030330085889911], [-68.25, -12.5], [-68.14644660940672, -12.25]]]}, "2020-12-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-68.14644660940672, -12.25], [-68.25, -12.0], [-68.03033008588989, -11.469669914110089], [-67.5, -11.25], [-67.25, -11.353553390593278], [-67.0, -11.25], [-66.5, -11.457106781186557], [-66.17677669529661, -11.323223304703363], [-66.03033008588989, -10.969669914110089], [-65.5, -10.75], [-65.25, -10.853553390593278], [-65.0, -10.75], [-64.75, -10.853553390593278], [-64.5, -10.75], [-64.25, -10.853553390593278], [-64.0, -10.75], [-63.46966991411011, -10.969669914110089], [-63.25, -11.5], [-63.46966991411011, -12.030330085889911], [-63.82322330470339, -12.176776695296637], [-63.85355339059328, -12.25], [-63.75, -12.5], [-63.96966991411011, -13.030330085889911], [-64.32322330470339, -13.176776695296637], [-64.46966991411011, -13.530330085889911], [-65.0, -13.75], [-65.25, -13.646446609406722], [-65.5, -13.75], [-65.75, -13.646446609406722], [-66.0, -13.75], [-66.53033008588989, -13.530330085889911], [-66.67677669529661, -13.176776695296637], [-66.75, -13.146446609406722], [-67.0, -13.25], [-67.25, -13.146446609406722], [-67.5, -13.25], [-68.03033008588989, -13.030330085889911], [-68.25, -12.5], [-68.14644660940672, -12.25]]]}, "2020-12-29T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-68.14644660940672, -12.25], [-68.25, -12.0], [-68.03033008588989, -11.469669914110089], [-67.5, -11.25], [-67.25, -11.353553390593278], [-67.0, -11.25], [-66.46966991411011, -11.469669914110089], [-66.32322330470339, -11.823223304703363], [-66.25, -11.853553390593278], [-66.0, -11.75], [-65.46966991411011, -11.969669914110089], [-65.32322330470339, -12.323223304703363], [-65.25, -12.353553390593278], [-65.0, -12.25], [-64.46966991411011, -12.469669914110089], [-64.25, -13.0], [-64.46966991411011, -13.530330085889911], [-65.0, -13.75], [-65.25, -13.646446609406722], [-65.5, -13.75], [-65.75, -13.646446609406722], [-66.0, -13.75], [-66.53033008588989, -13.530330085889911], [-66.67677669529661, -13.176776695296637], [-66.75, -13.146446609406722], [-67.0, -13.25], [-67.25, -13.146446609406722], [-67.5, -13.25], [-68.03033008588989, -13.030330085889911], [-68.25, -12.5], [-68.14644660940672, -12.25]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.572292050084684}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.720388093553502}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [24.330028126497325, 23.994956742434738, 24.721677779619768, 24.92798413941381]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [23.475794803086842, 23.07209122053132, 24.211131038769338, 24.35214805105528]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.646886930057093, -2.204984292946072, -1.4234697191952848, -1.4058473112547683]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8819699410098565, -2.572292050084684, -1.882953940344521, -1.5797014257463502]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5909165487913999, -2.1968047377532685, -1.4377279657042132, -1.4211595502130772]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9598765907645872, -2.7393943845723996, -1.729390957859599, -1.6307497322590907]}}