{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:22:28.480827", "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-Feb-28_to_2021-Mar-03_304.0_-4.0"}, "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": 2021020001090}, "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": "February 28 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 03 2021"}, "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": 52317.22699383186}, "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": -4.0}, "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": 304.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "304.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 304.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 306.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": -6.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": -4.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-56.75, -4.0], [-56.53, -3.47], [-56.0, -3.25], [-55.75, -3.354], [-55.5, -3.25], [-54.97, -3.47], [-54.823, -3.823], [-54.47, -3.97], [-54.25, -4.5], [-54.354, -4.75], [-54.323, -4.823], [-54.25, -4.854], [-54.0, -4.75], [-53.47, -4.97], [-53.25, -5.5], [-53.354, -5.75], [-53.25, -6.0], [-53.47, -6.53], [-53.823, -6.677], [-53.97, -7.03], [-54.5, -7.25], [-54.75, -7.146], [-55.0, -7.25], [-55.53, -7.03], [-55.75, -6.5], [-55.646, -6.25], [-55.677, -6.177], [-55.75, -6.146], [-56.0, -6.25], [-56.53, -6.03], [-56.75, -5.5], [-56.646, -5.25], [-56.75, -5.0], [-56.543, -4.5], [-56.75, -4.0]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["N.South-America"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-02-28T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-55.75, -4.646446609406722], [-56.0, -4.75], [-56.53033008588989, -4.5303300858899105], [-56.75, -4.0], [-56.53033008588989, -3.4696699141100895], [-56.0, -3.25], [-55.75, -3.3535533905932784], [-55.5, -3.25], [-54.96966991411011, -3.4696699141100895], [-54.75, -4.0], [-54.96966991411011, -4.5303300858899105], [-55.5, -4.75], [-55.75, -4.646446609406722]]]}, "2021-03-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-56.64644660940672, -5.25], [-56.75, -5.0], [-56.54289321881345, -4.5], [-56.75, -4.0], [-56.53033008588989, -3.4696699141100895], [-56.0, -3.25], [-55.75, -3.3535533905932784], [-55.5, -3.25], [-54.96966991411011, -3.4696699141100895], [-54.82322330470339, -3.823223304703363], [-54.46966991411011, -3.9696699141100895], [-54.25, -4.5], [-54.35355339059328, -4.75], [-54.32322330470339, -4.8232233047033635], [-54.25, -4.853553390593278], [-54.0, -4.75], [-53.46966991411011, -4.9696699141100895], [-53.25, -5.5], [-53.35355339059328, -5.75], [-53.25, -6.0], [-53.46966991411011, -6.5303300858899105], [-53.82322330470339, -6.6767766952966365], [-53.96966991411011, -7.0303300858899105], [-54.5, -7.25], [-54.75, -7.146446609406722], [-55.0, -7.25], [-55.53033008588989, -7.0303300858899105], [-55.75, -6.5], [-55.64644660940672, -6.25], [-55.67677669529661, -6.1767766952966365], [-55.75, -6.146446609406722], [-56.0, -6.25], [-56.53033008588989, -6.0303300858899105], [-56.75, -5.5], [-56.64644660940672, -5.25]]]}, "2021-03-02T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-56.64644660940672, -5.25], [-56.75, -5.0], [-56.54289321881345, -4.5], [-56.75, -4.0], [-56.53033008588989, -3.4696699141100895], [-56.0, -3.25], [-55.75, -3.3535533905932784], [-55.5, -3.25], [-54.96966991411011, -3.4696699141100895], [-54.82322330470339, -3.823223304703363], [-54.46966991411011, -3.9696699141100895], [-54.25, -4.5], [-54.35355339059328, -4.75], [-54.32322330470339, -4.8232233047033635], [-54.25, -4.853553390593278], [-54.0, -4.75], [-53.46966991411011, -4.9696699141100895], [-53.25, -5.5], [-53.35355339059328, -5.75], [-53.25, -6.0], [-53.46966991411011, -6.5303300858899105], [-53.82322330470339, -6.6767766952966365], 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"description": "The daily evolution of maximum t2m.", "value": [24.198207719586833, 22.95079001841924, 23.17636223890827, 22.481568361165046]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.3906778811573588, -1.5541759946894511, -1.4969162983684328, -2.240997660115237]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.4044477665287332, -1.7884744150180154, -1.7543339257069306, -2.484038786037047]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4857997449337903, -1.6393183090134271, -1.5339856514494907, -2.2605497433619814]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.5077429329698748, -1.934797148118872, -1.7346930459107397, -2.5208669629310076]}}