{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:52.632385", "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-Mar-21_to_2020-Mar-23_286.5_-9.5"}, "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": 2020030000576}, "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": "March 21 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 23 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": 54975.753181084954}, "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", "Peru"]}, "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": -9.5}, "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": 286.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "286.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 284.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 287.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -10.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -7.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-76.03, -7.97], [-75.5, -7.75], [-75.25, -7.854], [-75.0, -7.75], [-74.75, -7.854], [-74.677, -7.823], [-74.53, -7.47], [-74.177, -7.323], [-74.03, -6.97], [-73.5, -6.75], [-72.97, -6.97], [-72.823, -7.323], [-72.47, -7.47], [-72.25, -8.0], [-72.47, -8.53], [-72.823, -8.677], [-72.854, -8.75], [-72.75, -9.0], [-72.854, -9.25], [-72.75, -9.5], [-72.854, -9.75], [-72.75, -10.0], [-72.97, -10.53], [-73.5, -10.75], [-74.03, -10.53], [-74.177, -10.177], [-74.25, -10.146], [-74.5, -10.25], [-74.75, -10.146], [-75.0, -10.25], [-75.25, -10.146], [-75.5, -10.25], [-76.03, -10.03], [-76.25, -9.5], [-76.043, -9.0], [-76.25, -8.5], [-76.03, -7.97]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.W.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-21T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-76.04289321881345, -9.0], [-76.25, -8.5], [-76.03033008588989, -7.9696699141100895], [-75.5, -7.75], [-75.25, -7.853553390593278], [-75.0, -7.75], [-74.75, -7.853553390593278], [-74.67677669529661, -7.8232233047033635], [-74.53033008588989, -7.4696699141100895], [-74.17677669529661, -7.3232233047033635], [-74.03033008588989, -6.9696699141100895], [-73.5, -6.75], [-72.96966991411011, -6.9696699141100895], [-72.82322330470339, -7.3232233047033635], [-72.46966991411011, -7.4696699141100895], [-72.25, -8.0], [-72.46966991411011, -8.530330085889911], [-72.82322330470339, -8.676776695296637], [-72.85355339059328, -8.75], [-72.75, -9.0], [-72.85355339059328, -9.25], [-72.75, -9.5], [-72.85355339059328, -9.75], [-72.75, -10.0], [-72.96966991411011, -10.530330085889911], [-73.5, -10.75], [-74.03033008588989, -10.530330085889911], [-74.17677669529661, -10.176776695296637], [-74.25, -10.146446609406722], [-74.5, -10.25], [-74.75, -10.146446609406722], [-75.0, -10.25], [-75.25, -10.146446609406722], [-75.5, -10.25], [-76.03033008588989, -10.030330085889911], [-76.25, -9.5], [-76.04289321881345, -9.0]]]}, "2020-03-22T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-76.04289321881345, -9.0], [-76.25, -8.5], [-76.03033008588989, -7.9696699141100895], [-75.5, -7.75], [-75.25, -7.853553390593278], [-75.0, -7.75], [-74.75, -7.853553390593278], [-74.67677669529661, -7.8232233047033635], [-74.53033008588989, -7.4696699141100895], [-74.17677669529661, -7.3232233047033635], [-74.03033008588989, -6.9696699141100895], [-73.5, -6.75], [-72.96966991411011, -6.9696699141100895], [-72.82322330470339, -7.3232233047033635], [-72.46966991411011, -7.4696699141100895], [-72.25, -8.0], [-72.46966991411011, -8.530330085889911], [-72.82322330470339, -8.676776695296637], [-72.85355339059328, -8.75], [-72.75, -9.0], [-72.85355339059328, -9.25], [-72.75, -9.5], [-72.85355339059328, -9.75], [-72.75, -10.0], [-72.96966991411011, -10.530330085889911], [-73.5, -10.75], [-74.03033008588989, -10.530330085889911], [-74.17677669529661, -10.176776695296637], [-74.25, -10.146446609406722], [-74.5, -10.25], [-74.75, -10.146446609406722], [-75.0, -10.25], [-75.25, -10.146446609406722], [-75.5, -10.25], [-76.03033008588989, -10.030330085889911], [-76.25, -9.5], [-76.04289321881345, -9.0]]]}, "2020-03-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-76.04289321881345, -9.0], [-76.25, -8.5], [-76.03033008588989, -7.9696699141100895], [-75.5, -7.75], [-75.25, -7.853553390593278], [-75.0, -7.75], [-74.75, -7.853553390593278], [-74.67677669529661, -7.8232233047033635], [-74.53033008588989, -7.4696699141100895], [-74.17677669529661, -7.3232233047033635], [-74.03033008588989, -6.9696699141100895], [-73.5, -6.75], [-72.96966991411011, -6.9696699141100895], [-72.82322330470339, -7.3232233047033635], [-72.46966991411011, -7.4696699141100895], [-72.25, -8.0], [-72.46966991411011, -8.530330085889911], [-72.82322330470339, -8.676776695296637], [-72.85355339059328, -8.75], [-72.75, -9.0], [-72.85355339059328, -9.25], [-72.75, -9.5], [-72.85355339059328, -9.75], [-72.75, -10.0], [-72.96966991411011, -10.530330085889911], [-73.5, -10.75], [-74.03033008588989, -10.530330085889911], [-74.17677669529661, -10.176776695296637], [-74.25, -10.146446609406722], [-74.5, -10.25], [-74.75, -10.146446609406722], [-75.0, -10.25], [-75.25, -10.146446609406722], [-75.5, -10.25], [-76.03033008588989, -10.030330085889911], [-76.25, -9.5], [-76.04289321881345, -9.0]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -3.019231612190822}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.795076635125676}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [23.60719584575122, 22.642107773446355, 23.548828216645575]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [20.50479903141843, 19.83737680681429, 20.569813947666205]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.4418403995422295, -2.4209021573849503, -1.5224873484498478]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.8863418206682923, -3.019231612190822, -1.9269789914506532]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.5174108059952145, -2.436328129978294, -1.4697624985033038]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.059927780617196, -2.8416461573410294, -1.7913767936339162]}}