{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:24:41.716240", "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-31_to_2021-Jun-04_305.0_15.5"}, "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": 2021050001267}, "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 31 2021"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 04 2021"}, "duration": {"name": "Duration", "description": "Time elapsed (days) from the start date to the end date", "value": 5}, "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": 166734.5364672807}, "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": ["Saint Lucia"]}, "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": ["Atlantic Ocean", "Caribbean Sea"]}, "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": 15.5}, "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": 305.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "305.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 299.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 312.0}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 13.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 17.5}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-61.0, 14.75], [-60.75, 14.646], [-60.5, 14.75], [-60.25, 14.646], [-60.177, 14.677], [-60.03, 15.03], [-59.5, 15.25], [-59.25, 15.146], [-59.0, 15.25], [-58.75, 15.146], [-58.5, 15.25], [-58.25, 15.146], [-58.0, 15.25], [-57.75, 15.146], [-57.677, 15.177], [-57.53, 15.53], [-57.0, 15.75], [-56.75, 15.646], [-56.5, 15.75], [-56.25, 15.646], [-56.177, 15.677], [-56.03, 16.03], [-55.677, 16.177], [-55.53, 16.53], [-55.0, 16.75], [-54.75, 16.646], [-54.5, 16.75], [-54.0, 16.543], [-53.5, 16.75], [-53.25, 16.646], [-53.177, 16.677], [-53.146, 16.75], [-53.25, 17.0], [-53.03, 17.53], [-52.5, 17.75], [-52.25, 17.646], [-52.0, 17.75], [-51.47, 17.53], [-51.323, 17.177], [-51.25, 17.146], [-51.177, 17.177], [-51.03, 17.53], [-50.5, 17.75], [-50.25, 17.646], [-50.0, 17.75], [-49.75, 17.646], [-49.5, 17.75], [-49.25, 17.646], [-49.0, 17.75], [-48.75, 17.646], [-48.677, 17.677], [-48.53, 18.03], [-48.0, 18.25], [-47.47, 18.03], [-47.25, 17.5], [-47.354, 17.25], [-47.25, 17.0], [-47.47, 16.47], [-48.0, 16.25], [-48.25, 16.354], [-48.5, 16.25], [-48.75, 16.354], [-48.823, 16.323], [-48.97, 15.97], [-49.5, 15.75], [-49.75, 15.854], [-49.823, 15.823], [-49.97, 15.47], [-50.323, 15.323], [-50.47, 14.97], [-51.0, 14.75], [-51.25, 14.854], [-51.5, 14.75], [-51.75, 14.854], [-52.0, 14.75], [-52.25, 14.854], [-52.5, 14.75], [-52.75, 14.854], [-53.0, 14.75], [-53.25, 14.854], [-53.323, 14.823], [-53.47, 14.47], [-54.0, 14.25], [-54.25, 14.354], [-54.5, 14.25], [-55.0, 14.457], [-55.5, 14.25], [-55.75, 14.354], [-55.823, 14.323], [-55.97, 13.97], [-56.5, 13.75], [-56.75, 13.854], [-57.0, 13.75], [-57.25, 13.854], [-57.323, 13.823], [-57.47, 13.47], [-58.0, 13.25], [-58.25, 13.354], [-58.5, 13.25], [-58.75, 13.354], [-59.0, 13.25], [-59.25, 13.354], [-59.5, 13.25], [-59.75, 13.354], [-60.0, 13.25], [-60.25, 13.354], [-60.323, 13.323], [-60.47, 12.97], [-61.0, 12.75], [-61.53, 12.97], [-61.75, 13.5], [-61.646, 13.75], [-61.75, 14.0], [-61.53, 14.53], [-61.0, 14.75]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["Caribbean", "N.Atlantic-Ocean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2021-05-31T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-55.67677669529661, 16.17677669529664], [-55.53033008588989, 16.53033008588991], [-55.0, 16.75], [-54.75, 16.646446609406723], [-54.5, 16.75], [-54.0, 16.542893218813443], [-53.5, 16.75], [-53.25, 16.646446609406723], [-53.17677669529661, 16.67677669529664], [-53.03033008588989, 17.03033008588991], [-52.5, 17.25], [-52.25, 17.146446609406723], [-52.0, 17.25], [-51.75, 17.146446609406723], [-51.5, 17.25], [-51.25, 17.146446609406723], [-51.17677669529661, 17.17677669529664], [-51.03033008588989, 17.53033008588991], [-50.5, 17.75], [-50.25, 17.646446609406723], [-50.0, 17.75], [-49.75, 17.646446609406723], [-49.5, 17.75], [-49.25, 17.646446609406723], [-49.0, 17.75], [-48.75, 17.646446609406723], [-48.5, 17.75], [-48.25, 17.646446609406723], [-48.0, 17.75], [-47.46966991411011, 17.53033008588991], [-47.25, 17.0], [-47.46966991411011, 16.46966991411009], [-48.0, 16.25], [-48.25, 16.353553390593277], [-48.5, 16.25], [-48.75, 16.353553390593277], [-48.82322330470339, 16.32322330470336], [-48.96966991411011, 15.969669914110089], [-49.5, 15.75], [-49.75, 15.853553390593278], [-49.82322330470339, 15.823223304703363], [-49.96966991411011, 15.469669914110089], [-50.32322330470339, 15.323223304703363], [-50.46966991411011, 14.969669914110089], [-51.0, 14.75], [-51.25, 14.853553390593278], [-51.5, 14.75], [-51.75, 14.853553390593278], [-52.0, 14.75], [-52.25, 14.853553390593278], [-52.5, 14.75], [-52.75, 14.853553390593278], [-53.0, 14.75], [-53.25, 14.853553390593278], [-53.32322330470339, 14.823223304703363], [-53.46966991411011, 14.469669914110089], [-54.0, 14.25], [-54.25, 14.353553390593278], [-54.5, 14.25], [-55.03033008588989, 14.469669914110089], [-55.17677669529661, 14.823223304703363], [-55.25, 14.853553390593278], [-55.5, 14.75], [-56.03033008588989, 14.969669914110089], [-56.25, 15.5], [-56.03033008588989, 16.03033008588991], [-55.67677669529661, 16.17677669529664]]]}, "2021-06-01T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-61.17677669529661, 14.176776695296637], [-61.03033008588989, 14.530330085889911], [-60.5, 14.75], [-60.25, 14.646446609406722], [-60.17677669529661, 14.676776695296637], [-60.03033008588989, 15.030330085889911], [-59.5, 15.25], [-59.25, 15.146446609406722], [-59.0, 15.25], [-58.75, 15.146446609406722], [-58.5, 15.25], [-58.25, 15.146446609406722], [-58.0, 15.25], [-57.75, 15.146446609406722], [-57.67677669529661, 15.176776695296637], [-57.53033008588989, 15.530330085889911], [-57.0, 15.75], [-56.75, 15.646446609406722], [-56.5, 15.75], [-56.25, 15.646446609406722], [-56.17677669529661, 15.676776695296637], [-56.03033008588989, 16.03033008588991], [-55.67677669529661, 16.17677669529664], [-55.53033008588989, 16.53033008588991], [-55.0, 16.75], [-54.75, 16.646446609406723], [-54.5, 16.75], [-54.0, 16.542893218813443], [-53.5, 16.75], [-53.25, 16.646446609406723], [-53.17677669529661, 16.67677669529664], [-53.14644660940672, 16.75], [-53.25, 17.0], [-53.03033008588989, 17.53033008588991], [-52.5, 17.75], [-52.25, 17.646446609406723], [-52.0, 17.75], [-51.46966991411011, 17.53033008588991], [-51.32322330470339, 17.17677669529664], [-51.25, 17.146446609406723], [-51.17677669529661, 17.17677669529664], [-51.03033008588989, 17.53033008588991], [-50.5, 17.75], [-50.25, 17.646446609406723], [-50.0, 17.75], [-49.75, 17.646446609406723], [-49.5, 17.75], [-49.25, 17.646446609406723], [-49.0, 17.75], [-48.75, 17.646446609406723], [-48.5, 17.75], [-48.25, 17.646446609406723], [-48.0, 17.75], [-47.46966991411011, 17.53033008588991], [-47.25, 17.0], [-47.46966991411011, 16.46966991411009], [-48.0, 16.25], [-48.25, 16.353553390593277], [-48.5, 16.25], [-48.75, 16.353553390593277], [-48.82322330470339, 16.32322330470336], [-48.96966991411011, 15.969669914110089], [-49.5, 15.75], [-49.75, 15.853553390593278], [-49.82322330470339, 15.823223304703363], [-49.96966991411011, 15.469669914110089], [-50.32322330470339, 15.323223304703363], [-50.46966991411011, 14.969669914110089], [-51.0, 14.75], [-51.25, 14.853553390593278], [-51.5, 14.75], [-51.75, 14.853553390593278], [-52.0, 14.75], [-52.25, 14.853553390593278], [-52.5, 14.75], [-52.75, 14.853553390593278], [-53.0, 14.75], [-53.25, 14.853553390593278], [-53.32322330470339, 14.823223304703363], [-53.46966991411011, 14.469669914110089], [-54.0, 14.25], [-54.25, 14.353553390593278], [-54.5, 14.25], [-55.0, 14.457106781186557], [-55.5, 14.25], [-55.75, 14.353553390593278], [-55.82322330470339, 14.323223304703363], [-55.96966991411011, 13.969669914110089], [-56.5, 13.75], [-56.75, 13.853553390593278], [-57.0, 13.75], [-57.25, 13.853553390593278], [-57.32322330470339, 13.823223304703363], [-57.46966991411011, 13.469669914110089], [-58.0, 13.25], [-58.25, 13.353553390593278], [-58.5, 13.25], [-58.75, 13.353553390593278], [-59.0, 13.25], [-59.25, 13.353553390593278], [-59.5, 13.25], [-59.75, 13.353553390593278], [-60.0, 13.25], [-60.25, 13.353553390593278], [-60.32322330470339, 13.323223304703363], [-60.46966991411011, 12.969669914110089], [-61.0, 12.75], [-61.53033008588989, 12.969669914110089], [-61.75, 13.5], [-61.53033008588989, 14.030330085889911], [-61.17677669529661, 14.176776695296637]]]}, "2021-06-02T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-61.64644660940672, 13.75], [-61.75, 14.0], [-61.53033008588989, 14.530330085889911], [-61.0, 14.75], [-60.75, 14.646446609406722], [-60.5, 14.75], [-60.25, 14.646446609406722], [-60.17677669529661, 14.676776695296637], [-60.03033008588989, 15.030330085889911], [-59.5, 15.25], [-59.25, 15.146446609406722], [-59.0, 15.25], [-58.75, 15.146446609406722], [-58.5, 15.25], [-58.25, 15.146446609406722], [-58.0, 15.25], [-57.75, 15.146446609406722], [-57.67677669529661, 15.176776695296637], [-57.53033008588989, 15.530330085889911], [-57.0, 15.75], [-56.75, 15.646446609406722], [-56.5, 15.75], [-56.25, 15.646446609406722], [-56.17677669529661, 15.676776695296637], [-56.03033008588989, 16.03033008588991], [-55.67677669529661, 16.17677669529664], [-55.53033008588989, 16.53033008588991], [-55.0, 16.75], [-54.75, 16.646446609406723], [-54.5, 16.75], [-54.0, 16.542893218813443], [-53.5, 16.75], [-53.25, 16.646446609406723], [-53.17677669529661, 16.67677669529664], [-53.14644660940672, 16.75], [-53.25, 17.0], [-53.03033008588989, 17.53033008588991], [-52.5, 17.75], [-52.25, 17.646446609406723], [-52.0, 17.75], [-51.46966991411011, 17.53033008588991], [-51.32322330470339, 17.17677669529664], [-51.25, 17.146446609406723], [-51.17677669529661, 17.17677669529664], [-51.03033008588989, 17.53033008588991], [-50.5, 17.75], [-50.25, 17.646446609406723], [-50.0, 17.75], [-49.75, 17.646446609406723], [-49.5, 17.75], [-49.25, 17.646446609406723], [-49.0, 17.75], [-48.75, 17.646446609406723], [-48.67677669529661, 17.67677669529664], [-48.53033008588989, 18.03033008588991], [-48.0, 18.25], [-47.46966991411011, 18.03033008588991], [-47.25, 17.5], [-47.35355339059328, 17.25], [-47.25, 17.0], [-47.46966991411011, 16.46966991411009], [-48.0, 16.25], [-48.25, 16.353553390593277], [-48.5, 16.25], [-48.75, 16.353553390593277], [-48.82322330470339, 16.32322330470336], [-48.96966991411011, 15.969669914110089], [-49.5, 15.75], [-49.75, 15.853553390593278], [-49.82322330470339, 15.823223304703363], [-49.96966991411011, 15.469669914110089], [-50.32322330470339, 15.323223304703363], [-50.46966991411011, 14.969669914110089], [-51.0, 14.75], [-51.25, 14.853553390593278], [-51.5, 14.75], [-51.75, 14.853553390593278], [-52.0, 14.75], [-52.25, 14.853553390593278], [-52.5, 14.75], [-52.75, 14.853553390593278], [-53.0, 14.75], [-53.25, 14.853553390593278], [-53.32322330470339, 14.823223304703363], [-53.46966991411011, 14.469669914110089], [-54.0, 14.25], [-54.25, 14.353553390593278], [-54.5, 14.25], [-55.0, 14.457106781186557], [-55.5, 14.25], [-55.75, 14.353553390593278], [-55.82322330470339, 14.323223304703363], [-55.96966991411011, 13.969669914110089], [-56.5, 13.75], [-56.75, 13.853553390593278], [-57.0, 13.75], [-57.25, 13.853553390593278], [-57.32322330470339, 13.823223304703363], [-57.46966991411011, 13.469669914110089], [-58.0, 13.25], [-58.25, 13.353553390593278], [-58.5, 13.25], [-58.75, 13.353553390593278], [-59.0, 13.25], [-59.25, 13.353553390593278], [-59.5, 13.25], [-59.75, 13.353553390593278], [-60.0, 13.25], [-60.25, 13.353553390593278], [-60.32322330470339, 13.323223304703363], [-60.46966991411011, 12.969669914110089], [-61.0, 12.75], [-61.53033008588989, 12.969669914110089], [-61.75, 13.5], [-61.64644660940672, 13.75]]]}, "2021-06-03T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-61.75, 14.0], [-61.53033008588989, 14.530330085889911], [-61.0, 14.75], [-60.75, 14.646446609406722], [-60.5, 14.75], [-60.25, 14.646446609406722], [-60.17677669529661, 14.676776695296637], [-60.03033008588989, 15.030330085889911], [-59.5, 15.25], [-59.25, 15.146446609406722], [-59.0, 15.25], [-58.75, 15.146446609406722], [-58.5, 15.25], [-58.25, 15.146446609406722], [-58.0, 15.25], [-57.75, 15.146446609406722], [-57.67677669529661, 15.176776695296637], [-57.53033008588989, 15.530330085889911], [-57.0, 15.75], [-56.75, 15.646446609406722], [-56.5, 15.75], [-56.25, 15.646446609406722], [-56.17677669529661, 15.676776695296637], [-56.03033008588989, 16.03033008588991], [-55.5, 16.25], [-55.25, 16.146446609406723], [-55.0, 16.25], [-54.75, 16.146446609406723], [-54.5, 16.25], [-53.96966991411011, 16.03033008588991], [-53.75, 15.5], [-53.96966991411011, 14.969669914110089], [-54.5, 14.75], [-54.75, 14.853553390593278], [-54.82322330470339, 14.823223304703363], [-54.96966991411011, 14.469669914110089], [-55.5, 14.25], [-55.75, 14.353553390593278], [-55.82322330470339, 14.323223304703363], [-55.96966991411011, 13.969669914110089], [-56.5, 13.75], [-56.75, 13.853553390593278], [-57.0, 13.75], [-57.25, 13.853553390593278], [-57.32322330470339, 13.823223304703363], [-57.46966991411011, 13.469669914110089], [-58.0, 13.25], [-58.25, 13.353553390593278], [-58.5, 13.25], [-58.75, 13.353553390593278], [-59.0, 13.25], [-59.25, 13.353553390593278], [-59.5, 13.25], [-59.75, 13.353553390593278], [-60.0, 13.25], [-60.25, 13.353553390593278], [-60.32322330470339, 13.323223304703363], [-60.46966991411011, 12.969669914110089], [-61.0, 12.75], [-61.53033008588989, 12.969669914110089], [-61.75, 13.5], [-61.64644660940672, 13.75], [-61.75, 14.0]]], [[[-53.03033008588989, 16.46966991411009], [-53.25, 17.0], [-53.03033008588989, 17.53033008588991], [-52.5, 17.75], [-52.25, 17.646446609406723], [-52.0, 17.75], [-51.46966991411011, 17.53033008588991], [-51.25, 17.0], [-51.46966991411011, 16.46966991411009], [-52.0, 16.25], [-52.25, 16.353553390593277], [-52.5, 16.25], [-53.03033008588989, 16.46966991411009]]], [[[-48.0, 16.75], [-48.53033008588989, 16.96966991411009], [-48.75, 17.5], [-48.53033008588989, 18.03033008588991], [-48.0, 18.25], [-47.46966991411011, 18.03033008588991], [-47.25, 17.5], [-47.46966991411011, 16.96966991411009], [-48.0, 16.75]]]]}, "2021-06-04T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-60.46966991411011, 13.469669914110089], [-61.0, 13.25], [-61.53033008588989, 13.469669914110089], [-61.75, 14.0], [-61.53033008588989, 14.530330085889911], [-61.0, 14.75], [-60.46966991411011, 14.530330085889911], [-60.25, 14.0], [-60.46966991411011, 13.469669914110089]]], [[[-47.46966991411011, 16.96966991411009], [-48.0, 16.75], [-48.53033008588989, 16.96966991411009], [-48.75, 17.5], [-48.53033008588989, 18.03033008588991], [-48.0, 18.25], [-47.46966991411011, 18.03033008588991], [-47.25, 17.5], [-47.46966991411011, 16.96966991411009]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.3158072289814982}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -0.9148009428421237}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.07651358004756, 25.20189617888252, 25.250241162000464, 25.935182661803708, 25.3698768106305]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [24.427614745545384, 24.417885298699446, 24.309495197771696, 24.64579745686609, 24.49831996046879]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-0.8201169793182246, -1.0016378613658345, -0.9795207086308773, -0.708500464322683, -0.9464340620161238]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.0981286160956074, -1.3158072289814982, -1.3011813985468734, -0.8455739945293317, -0.9875581393585549]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.430079210612489, -1.8188203035792196, -1.792441707613797, -1.3447264526383864, -1.5797098505790241]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.912905392632051, -2.411024942189269, -2.6001092226890736, -1.601146150862568, -1.6729692592399583]}}