{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:13:58.058557", "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-Jun-12_to_2020-Jun-16_283.0_25.0"}, "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": 2020060000404}, "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": "June 12 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "June 16 2020"}, "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": 92657.23819491935}, "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": ["Bahamas"]}, "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", "Great Bahama"]}, "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": 25.0}, "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": 283.0}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "283.0\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 280.5}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 284.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 23.5}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 26.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[-79.677, 25.677], [-79.53, 26.03], [-79.0, 26.25], [-78.75, 26.146], [-78.726, 26.156], [-78.677, 26.177], [-78.53, 26.53], [-78.0, 26.75], [-77.75, 26.646], [-77.5, 26.75], [-76.97, 26.53], [-76.823, 26.177], [-76.75, 26.146], [-76.5, 26.25], [-75.97, 26.03], [-75.823, 25.677], [-75.47, 25.53], [-75.323, 25.177], [-74.97, 25.03], [-74.75, 24.5], [-74.854, 24.25], [-74.75, 24.0], [-74.97, 23.47], [-75.5, 23.25], [-75.75, 23.354], [-76.0, 23.25], [-76.25, 23.354], [-76.323, 23.323], [-76.47, 22.97], [-77.0, 22.75], [-77.25, 22.854], [-77.5, 22.75], [-77.75, 22.854], [-78.0, 22.75], [-78.53, 22.97], [-78.75, 23.5], [-78.646, 23.75], [-78.677, 23.823], [-78.75, 23.854], [-79.0, 23.75], [-79.25, 23.854], [-79.5, 23.75], [-80.03, 23.97], [-80.25, 24.5], [-80.146, 24.75], [-80.25, 25.0], [-80.03, 25.53], [-79.677, 25.677]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["E.North-America", "Caribbean"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-06-12T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-79.14644660940672, 25.25], [-79.25, 25.5], [-79.03033008588989, 26.03033008588991], [-78.5, 26.25], [-78.25, 26.146446609406723], [-78.0, 26.25], [-77.75, 26.146446609406723], [-77.5, 26.25], [-76.96966991411011, 26.03033008588991], [-76.82322330470339, 25.67677669529664], [-76.75, 25.646446609406723], [-76.5, 25.75], [-75.96966991411011, 25.53033008588991], [-75.82322330470339, 25.17677669529664], [-75.46966991411011, 25.03033008588991], [-75.25, 24.5], [-75.46966991411011, 23.96966991411009], [-76.0, 23.75], [-76.25, 23.853553390593277], [-76.5, 23.75], [-76.75, 23.853553390593277], [-77.0, 23.75], [-77.25, 23.853553390593277], [-77.5, 23.75], [-78.03033008588989, 23.96966991411009], [-78.19822330470333, 24.375000000000007], [-78.5, 24.25], [-79.03033008588989, 24.46966991411009], [-79.25, 25.0], [-79.14644660940672, 25.25]]]}, "2020-06-13T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-80.14644660940672, 24.75], [-80.25, 25.0], [-80.03033008588989, 25.53033008588991], [-79.67677669529661, 25.67677669529664], [-79.53033008588989, 26.03033008588991], [-79.0, 26.25], [-78.75, 26.146446609406723], [-78.67677669529661, 26.17677669529664], [-78.53033008588989, 26.53033008588991], [-78.0, 26.75], [-77.75, 26.646446609406723], [-77.5, 26.75], [-76.96966991411011, 26.53033008588991], [-76.82322330470339, 26.17677669529664], [-76.75, 26.146446609406723], [-76.5, 26.25], [-75.96966991411011, 26.03033008588991], [-75.82322330470339, 25.67677669529664], [-75.46966991411011, 25.53033008588991], [-75.32322330470339, 25.17677669529664], [-74.96966991411011, 25.03033008588991], [-74.75, 24.5], [-74.85355339059328, 24.25], [-74.75, 24.0], [-74.96966991411011, 23.46966991411009], [-75.5, 23.25], [-75.75, 23.353553390593277], [-76.0, 23.25], [-76.25, 23.353553390593277], [-76.32322330470339, 23.32322330470336], [-76.46966991411011, 22.96966991411009], [-77.0, 22.75], [-77.25, 22.853553390593277], [-77.5, 22.75], [-77.75, 22.853553390593277], [-78.0, 22.75], [-78.53033008588989, 22.96966991411009], [-78.75, 23.5], [-78.64644660940672, 23.75], [-78.67677669529661, 23.82322330470336], [-78.75, 23.853553390593277], [-79.0, 23.75], [-79.25, 23.853553390593277], [-79.5, 23.75], [-80.03033008588989, 23.96966991411009], [-80.25, 24.5], [-80.14644660940672, 24.75]]]}, "2020-06-14T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-80.14644660940672, 24.75], [-80.25, 25.0], [-80.03033008588989, 25.53033008588991], [-79.67677669529661, 25.67677669529664], [-79.53033008588989, 26.03033008588991], [-79.0, 26.25], [-78.75, 26.146446609406723], [-78.67677669529661, 26.17677669529664], [-78.53033008588989, 26.53033008588991], [-78.0, 26.75], [-77.75, 26.646446609406723], [-77.5, 26.75], [-76.96966991411011, 26.53033008588991], [-76.82322330470339, 26.17677669529664], [-76.75, 26.146446609406723], [-76.5, 26.25], [-75.96966991411011, 26.03033008588991], [-75.82322330470339, 25.67677669529664], [-75.46966991411011, 25.53033008588991], [-75.32322330470339, 25.17677669529664], [-74.96966991411011, 25.03033008588991], [-74.75, 24.5], [-74.85355339059328, 24.25], [-74.75, 24.0], [-74.96966991411011, 23.46966991411009], [-75.5, 23.25], [-75.75, 23.353553390593277], [-76.0, 23.25], [-76.25, 23.353553390593277], [-76.32322330470339, 23.32322330470336], [-76.46966991411011, 22.96966991411009], [-77.0, 22.75], [-77.25, 22.853553390593277], [-77.5, 22.75], [-77.75, 22.853553390593277], [-78.0, 22.75], [-78.53033008588989, 22.96966991411009], [-78.75, 23.5], [-78.64644660940672, 23.75], [-78.67677669529661, 23.82322330470336], [-78.75, 23.853553390593277], [-79.0, 23.75], [-79.25, 23.853553390593277], [-79.5, 23.75], [-80.03033008588989, 23.96966991411009], [-80.25, 24.5], [-80.14644660940672, 24.75]]]}, "2020-06-15T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[-80.14644660940672, 24.75], [-80.25, 25.0], [-80.03033008588989, 25.53033008588991], [-79.67677669529661, 25.67677669529664], [-79.53033008588989, 26.03033008588991], [-79.0, 26.25], [-78.75, 26.146446609406723], [-78.67677669529661, 26.17677669529664], [-78.53033008588989, 26.53033008588991], [-78.0, 26.75], [-77.75, 26.646446609406723], [-77.5, 26.75], [-76.96966991411011, 26.53033008588991], [-76.82322330470339, 26.17677669529664], [-76.75, 26.146446609406723], [-76.5, 26.25], [-75.96966991411011, 26.03033008588991], [-75.82322330470339, 25.67677669529664], [-75.46966991411011, 25.53033008588991], [-75.32322330470339, 25.17677669529664], [-74.96966991411011, 25.03033008588991], [-74.75, 24.5], [-74.85355339059328, 24.25], [-74.75, 24.0], [-74.96966991411011, 23.46966991411009], [-75.5, 23.25], [-75.75, 23.353553390593277], [-76.0, 23.25], [-76.25, 23.353553390593277], [-76.32322330470339, 23.32322330470336], [-76.46966991411011, 22.96966991411009], [-77.0, 22.75], [-77.25, 22.853553390593277], [-77.5, 22.75], [-77.75, 22.853553390593277], [-78.0, 22.75], [-78.53033008588989, 22.96966991411009], [-78.75, 23.5], [-78.64644660940672, 23.75], [-78.67677669529661, 23.82322330470336], [-78.75, 23.853553390593277], [-79.0, 23.75], [-79.25, 23.853553390593277], [-79.5, 23.75], [-80.03033008588989, 23.96966991411009], [-80.25, 24.5], [-80.14644660940672, 24.75]]]}, "2020-06-16T11:30:00.000000000": {"type": "MultiPolygon", "coordinates": [[[[-77.46966991411011, 24.46966991411009], [-78.0, 24.25], [-78.53033008588989, 24.46966991411009], [-78.75, 25.0], [-78.53033008588989, 25.53033008588991], [-78.0, 25.75], [-77.46966991411011, 25.53033008588991], [-77.25, 25.0], [-77.46966991411011, 24.46966991411009]]], [[[-75.46966991411011, 24.46966991411009], [-76.0, 24.25], [-76.53033008588989, 24.46966991411009], [-76.75, 25.0], [-76.53033008588989, 25.53033008588991], [-76.0, 25.75], [-75.46966991411011, 25.53033008588991], [-75.25, 25.0], [-75.46966991411011, 24.46966991411009]]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -1.8121916035016739}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -1.3354312198932559}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [25.733272040833185, 25.711379650607, 25.54965331709002, 25.753868155020882, 25.781148651119793]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [25.448859294789997, 25.014550568433094, 24.94215232878571, 25.19340731208797, 25.57945054534656]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-1.1279026660934877, -1.2905820138111452, -1.489527076126802, -1.3053260532748598, -1.1710037874968293]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-1.3667070853869632, -1.7468219043395834, -1.8121916035016739, -1.567594030203793, -1.2038891644069167]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.592535353757456, -1.7809020224975436, -1.993519638337456, -1.6488182491922279, -1.3920980555027693]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.9533911772944481, -2.43927858324763, -2.4958172149273627, -1.9808137953084421, -1.4933542153539325]}}