{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:24:24.105320", "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": "2021-May-04_to_2021-May-06_293.0_-39.5"}, "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": 2021050000321}, "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": "May 04 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "May 06 2021"}, "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": 86194.74773994542}, "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": ["Argentina"]}, "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": -39.5}, "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": 293.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "293.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 292.0}, "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": -40.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -37.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-68.53, -36.97], [-68.0, -36.75], [-67.75, -36.854], [-67.5, -36.75], [-66.97, -36.97], [-66.823, -37.323], [-66.47, -37.47], [-66.25, -38.0], [-66.354, -38.25], [-66.323, -38.323], [-66.0, -38.457], [-65.677, -38.323], [-65.646, -38.25], [-65.75, -38.0], [-65.53, -37.47], [-65.177, -37.323], [-65.03, -36.97], [-64.5, -36.75], [-63.97, -36.97], [-63.823, -37.323], [-63.47, -37.47], [-63.25, -38.0], [-63.47, -38.53], [-63.823, -38.677], [-63.957, -39.0], [-63.75, -39.5], [-63.97, -40.03], [-64.323, -40.177], [-64.354, -40.25], [-64.25, -40.5], [-64.47, -41.03], [-65.0, -41.25], [-65.25, -41.146], [-65.5, -41.25], [-65.75, -41.146], [-66.0, -41.25], [-66.25, -41.146], [-66.5, -41.25], [-66.75, -41.146], [-67.0, -41.25], [-67.25, -41.146], [-67.5, -41.25], [-67.75, -41.146], [-68.0, -41.25], [-68.53, -41.03], [-68.75, -40.5], [-68.53, -39.97], [-68.177, -39.823], [-68.146, -39.75], [-68.25, -39.5], [-68.03, -38.97], [-67.677, -38.823], [-67.646, -38.75], [-67.677, -38.677], [-67.75, -38.646], [-68.0, -38.75], [-68.53, -38.53], [-68.75, -38.0], [-68.646, -37.75], [-68.75, -37.5], [-68.53, -36.97]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["S.E.South-America", "S.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-05-04T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-68.64644660940672, -37.75], [-68.75, -37.5], [-68.53033008588989, -36.96966991411009], [-68.0, -36.75], [-67.75, -36.85355339059328], [-67.5, -36.75], [-66.96966991411011, -36.96966991411009], [-66.82322330470339, -37.32322330470336], [-66.46966991411011, -37.46966991411009], [-66.25, -38.0], [-66.35355339059328, -38.25], [-66.32322330470339, -38.32322330470336], [-66.0, -38.45710678118656], [-65.67677669529661, -38.32322330470336], [-65.64644660940672, -38.25], [-65.75, -38.0], [-65.53033008588989, -37.46966991411009], [-65.17677669529661, -37.32322330470336], [-65.03033008588989, -36.96966991411009], [-64.5, -36.75], [-63.96966991411011, -36.96966991411009], [-63.82322330470339, -37.32322330470336], [-63.46966991411011, -37.46966991411009], [-63.25, -38.0], [-63.46966991411011, -38.53033008588991], [-63.82322330470339, -38.67677669529664], [-63.95710678118655, -39.0], [-63.75, -39.5], [-63.96966991411011, -40.03033008588991], [-64.32322330470339, -40.17677669529664], [-64.35355339059328, -40.25], [-64.25, -40.5], [-64.46966991411011, -41.03033008588991], [-65.0, -41.25], [-65.25, -41.14644660940672], [-65.5, -41.25], [-65.75, -41.14644660940672], [-66.0, -41.25], [-66.25, -41.14644660940672], [-66.5, -41.25], [-66.75, -41.14644660940672], [-67.0, -41.25], [-67.25, -41.14644660940672], [-67.5, -41.25], [-67.75, -41.14644660940672], [-68.0, -41.25], [-68.53033008588989, -41.03033008588991], [-68.75, -40.5], [-68.53033008588989, -39.96966991411009], [-68.17677669529661, -39.82322330470336], [-68.14644660940672, -39.75], [-68.25, -39.5], [-68.03033008588989, -38.96966991411009], [-67.67677669529661, -38.82322330470336], [-67.64644660940672, -38.75], [-67.67677669529661, -38.67677669529664], [-67.75, -38.64644660940672], [-68.0, -38.75], [-68.53033008588989, -38.53033008588991], [-68.75, -38.0], [-68.64644660940672, -37.75]]]}, "2021-05-05T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-68.64644660940672, -37.75], [-68.75, -37.5], [-68.53033008588989, -36.96966991411009], [-68.0, -36.75], [-67.75, -36.85355339059328], [-67.5, -36.75], [-66.96966991411011, -36.96966991411009], [-66.82322330470339, -37.32322330470336], [-66.46966991411011, -37.46966991411009], [-66.25, -38.0], [-66.35355339059328, -38.25], [-66.32322330470339, -38.32322330470336], [-66.0, -38.45710678118656], [-65.67677669529661, -38.32322330470336], [-65.64644660940672, -38.25], [-65.75, -38.0], [-65.53033008588989, -37.46966991411009], [-65.17677669529661, -37.32322330470336], [-65.03033008588989, -36.96966991411009], [-64.5, -36.75], [-63.96966991411011, -36.96966991411009], [-63.82322330470339, -37.32322330470336], [-63.46966991411011, -37.46966991411009], [-63.25, -38.0], [-63.46966991411011, -38.53033008588991], [-63.82322330470339, -38.67677669529664], [-63.95710678118655, -39.0], [-63.75, -39.5], [-63.96966991411011, -40.03033008588991], [-64.32322330470339, -40.17677669529664], [-64.35355339059328, -40.25], [-64.25, -40.5], [-64.46966991411011, -41.03033008588991], [-65.0, -41.25], [-65.25, -41.14644660940672], [-65.5, -41.25], [-65.75, -41.14644660940672], [-66.0, -41.25], [-66.25, -41.14644660940672], [-66.5, -41.25], [-66.75, -41.14644660940672], [-67.0, -41.25], [-67.25, -41.14644660940672], [-67.5, -41.25], [-67.75, -41.14644660940672], [-68.0, -41.25], [-68.53033008588989, -41.03033008588991], [-68.75, -40.5], [-68.53033008588989, -39.96966991411009], [-68.17677669529661, -39.82322330470336], [-68.14644660940672, -39.75], [-68.25, -39.5], [-68.03033008588989, -38.96966991411009], [-67.67677669529661, -38.82322330470336], [-67.64644660940672, -38.75], [-67.67677669529661, -38.67677669529664], [-67.75, -38.64644660940672], [-68.0, -38.75], [-68.53033008588989, -38.53033008588991], [-68.75, -38.0], [-68.64644660940672, -37.75]]]}, "2021-05-06T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-68.64644660940672, -37.75], [-68.75, -37.5], [-68.53033008588989, -36.96966991411009], [-68.0, -36.75], [-67.75, -36.85355339059328], [-67.5, -36.75], [-66.96966991411011, -36.96966991411009], [-66.82322330470339, -37.32322330470336], [-66.46966991411011, -37.46966991411009], [-66.25, -38.0], [-66.35355339059328, -38.25], [-66.32322330470339, -38.32322330470336], [-66.0, -38.45710678118656], [-65.67677669529661, -38.32322330470336], [-65.64644660940672, -38.25], [-65.75, -38.0], [-65.53033008588989, -37.46966991411009], [-65.17677669529661, -37.32322330470336], [-65.03033008588989, -36.96966991411009], [-64.5, -36.75], [-63.96966991411011, -36.96966991411009], [-63.82322330470339, -37.32322330470336], [-63.46966991411011, -37.46966991411009], [-63.25, -38.0], [-63.46966991411011, -38.53033008588991], [-63.82322330470339, -38.67677669529664], [-63.95710678118655, -39.0], [-63.75, -39.5], [-63.96966991411011, -40.03033008588991], [-64.32322330470339, -40.17677669529664], [-64.35355339059328, -40.25], [-64.25, -40.5], [-64.46966991411011, -41.03033008588991], [-65.0, -41.25], [-65.25, -41.14644660940672], [-65.5, -41.25], [-65.75, -41.14644660940672], [-66.0, -41.25], [-66.25, -41.14644660940672], [-66.5, -41.25], [-66.75, -41.14644660940672], [-67.0, -41.25], [-67.25, -41.14644660940672], [-67.5, -41.25], [-67.75, -41.14644660940672], [-68.0, -41.25], [-68.53033008588989, -41.03033008588991], [-68.75, -40.5], [-68.53033008588989, -39.96966991411009], [-68.17677669529661, -39.82322330470336], [-68.14644660940672, -39.75], [-68.25, -39.5], [-68.03033008588989, -38.96966991411009], [-67.67677669529661, -38.82322330470336], [-67.64644660940672, -38.75], [-67.67677669529661, -38.67677669529664], [-67.75, -38.64644660940672], [-68.0, -38.75], [-68.53033008588989, -38.53033008588991], [-68.75, -38.0], [-68.64644660940672, -37.75]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -7.8407994938783645}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -5.286890783924423}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [7.047067051452643, 6.124586131591798, 7.494187734877983]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [2.9404110243789887, 3.828000972318762, 4.827452450628925]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.240943146043744, -6.0599143405989935, -4.559814865130529]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-6.113579484194304, -7.8407994938783645, -5.661720362814094]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.6877219292856753, -1.9465283196270056, -1.5051690312370356]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-2.0677866902359914, -2.2577576233699457, -1.7053434148018902]}}