{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:19:15.552744", "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-Nov-17_to_2020-Nov-19_288.5_10.5"}, "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": 2020110000551}, "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 17 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "November 19 2020"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 3}, "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": 51732.352732370935}, "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": ["Venezuela, Bolivarian Republic of"]}, "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": 10.5}, "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": 288.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "288.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 287.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 290.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 9.0}, "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": [[[-73.146, 10.25], [-73.25, 10.5], [-73.03, 11.03], [-72.677, 11.177], [-72.646, 11.25], [-72.75, 11.5], [-72.53, 12.03], [-72.0, 12.25], [-71.47, 12.03], [-71.25, 11.5], [-71.354, 11.25], [-71.323, 11.177], [-71.25, 11.146], [-71.0, 11.25], [-70.5, 11.043], [-70.0, 11.25], [-69.75, 11.146], [-69.5, 11.25], [-68.97, 11.03], [-68.75, 10.5], [-68.97, 9.97], [-69.323, 9.823], [-69.354, 9.75], [-69.25, 9.5], [-69.47, 8.97], [-69.823, 8.823], [-69.97, 8.47], [-70.5, 8.25], [-70.75, 8.354], [-71.0, 8.25], [-71.53, 8.47], [-71.698, 8.875], [-72.0, 8.75], [-72.25, 8.854], [-72.5, 8.75], [-73.03, 8.97], [-73.25, 9.5], [-73.146, 9.75], [-73.25, 10.0], [-73.146, 10.25]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.W.South-America", "N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-11-17T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-73.14644660940672, 9.75], [-73.25, 10.0], [-73.14644660940672, 10.25], [-73.25, 10.5], [-73.03033008588989, 11.030330085889911], [-72.67677669529661, 11.176776695296637], [-72.64644660940672, 11.25], [-72.75, 11.5], [-72.53033008588989, 12.030330085889911], [-72.0, 12.25], [-71.46966991411011, 12.030330085889911], [-71.25, 11.5], [-71.35355339059328, 11.25], [-71.32322330470339, 11.176776695296637], [-71.25, 11.146446609406722], [-71.0, 11.25], [-70.5, 11.042893218813443], [-70.0, 11.25], [-69.75, 11.146446609406722], [-69.5, 11.25], [-68.96966991411011, 11.030330085889911], [-68.75, 10.5], [-68.96966991411011, 9.969669914110089], [-69.32322330470339, 9.823223304703363], [-69.35355339059328, 9.75], [-69.25, 9.5], [-69.46966991411011, 8.969669914110089], [-69.82322330470339, 8.823223304703363], [-69.96966991411011, 8.469669914110089], [-70.5, 8.25], [-70.75, 8.353553390593278], [-71.0, 8.25], [-71.53033008588989, 8.469669914110089], [-71.69822330470333, 8.875000000000007], [-72.0, 8.75], [-72.25, 8.853553390593278], [-72.5, 8.75], [-73.03033008588989, 8.969669914110089], [-73.25, 9.5], [-73.14644660940672, 9.75]]]}, "2020-11-18T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-73.14644660940672, 9.75], [-73.25, 10.0], [-73.14644660940672, 10.25], [-73.25, 10.5], [-73.03033008588989, 11.030330085889911], [-72.67677669529661, 11.176776695296637], [-72.64644660940672, 11.25], [-72.75, 11.5], [-72.53033008588989, 12.030330085889911], [-72.0, 12.25], [-71.46966991411011, 12.030330085889911], [-71.25, 11.5], [-71.35355339059328, 11.25], [-71.32322330470339, 11.176776695296637], [-71.25, 11.146446609406722], [-71.0, 11.25], [-70.5, 11.042893218813443], [-70.0, 11.25], [-69.75, 11.146446609406722], [-69.5, 11.25], [-68.96966991411011, 11.030330085889911], [-68.75, 10.5], [-68.96966991411011, 9.969669914110089], [-69.32322330470339, 9.823223304703363], [-69.35355339059328, 9.75], [-69.25, 9.5], [-69.46966991411011, 8.969669914110089], [-69.82322330470339, 8.823223304703363], [-69.96966991411011, 8.469669914110089], [-70.5, 8.25], [-70.75, 8.353553390593278], [-71.0, 8.25], [-71.53033008588989, 8.469669914110089], [-71.69822330470333, 8.875000000000007], [-72.0, 8.75], [-72.25, 8.853553390593278], [-72.5, 8.75], [-73.03033008588989, 8.969669914110089], [-73.25, 9.5], [-73.14644660940672, 9.75]]]}, "2020-11-19T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-73.14644660940672, 9.75], [-73.25, 10.0], [-73.14644660940672, 10.25], [-73.25, 10.5], [-73.03033008588989, 11.030330085889911], [-72.67677669529661, 11.176776695296637], [-72.64644660940672, 11.25], [-72.75, 11.5], [-72.53033008588989, 12.030330085889911], [-72.0, 12.25], [-71.46966991411011, 12.030330085889911], [-71.25, 11.5], [-71.35355339059328, 11.25], [-71.32322330470339, 11.176776695296637], [-71.25, 11.146446609406722], [-71.0, 11.25], [-70.5, 11.042893218813443], [-70.0, 11.25], [-69.75, 11.146446609406722], [-69.5, 11.25], [-68.96966991411011, 11.030330085889911], [-68.75, 10.5], [-68.96966991411011, 9.969669914110089], [-69.32322330470339, 9.823223304703363], [-69.35355339059328, 9.75], [-69.25, 9.5], [-69.46966991411011, 8.969669914110089], [-69.82322330470339, 8.823223304703363], [-69.96966991411011, 8.469669914110089], [-70.5, 8.25], [-70.75, 8.353553390593278], [-71.0, 8.25], [-71.53033008588989, 8.469669914110089], [-71.69822330470333, 8.875000000000007], [-72.0, 8.75], [-72.25, 8.853553390593278], [-72.5, 8.75], [-73.03033008588989, 8.969669914110089], [-73.25, 9.5], [-73.14644660940672, 9.75]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -2.5181633764424873}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.671312724486351}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [22.635471973310246, 22.682723432559044, 23.05242367162299]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [14.508581832025754, 15.13928333390919, 15.350213752826846]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.8071318006025663, -1.7769095117799472, -1.4298968610765395]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-2.5181633764424873, -2.4171767486772637, -1.931016176647347]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-2.037667661561079, -1.969122702475799, -1.590167703369755]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.802875642960475, -2.479919277477996, -1.9534101711918583]}}