{"version_information": {"version": "det_AHW_v1.1", "compiled_date": "2026-03-19 18:11:53.264338", "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-23_to_2020-Mar-27_58.5_32.0"}, "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": 2020030000629}, "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 23 2020"}, "end_date": {"name": "End date", "description": "Last date on which grid points are under the influence of an event", "value": "March 27 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": 65196.160703737085}, "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": ["Iran, Islamic Republic of"]}, "continents_affected": {"name": "Continents affected", "description": "List of all continents affected", "value": ["Asia"]}, "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": 32.0}, "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": 58.5}, "center_latf": {"name": "Center latitude", "description": "Formatted version of center longitude", "value": "58.5\u00b0E"}, "western_lon": {"name": "Westernmost longitude", "description": "Westernmost longitude affected by event", "value": 57.0}, "eastern_lon": {"name": "Easternmost longitude", "description": "Easternmost longitude affected by event", "value": 60.5}, "southern_lat": {"name": "Southernmost latitude", "description": "Southernmost latitude affected by event", "value": 31.0}, "northern_lat": {"name": "Northernmost latitude", "description": "Northernmost latitude affected by event", "value": 34.0}, "polygons_merged": {"name": "Merged polygon", "description": "Merger or polygons at each time step", "value": {"type": "Polygon", "coordinates": [[[58.03, 34.53], [58.177, 34.177], [58.302, 34.125], [58.47, 34.53], [59.0, 34.75], [59.53, 34.53], [59.677, 34.177], [60.03, 34.03], [60.177, 33.677], [60.53, 33.53], [60.75, 33.0], [60.646, 32.75], [60.75, 32.5], [60.646, 32.25], [60.677, 32.177], [61.03, 32.03], [61.25, 31.5], [61.03, 30.97], [60.5, 30.75], [60.25, 30.854], [60.0, 30.75], [59.75, 30.854], [59.5, 30.75], [59.25, 30.854], [59.177, 30.823], [59.03, 30.47], [58.5, 30.25], [57.97, 30.47], [57.823, 30.823], [57.47, 30.97], [57.25, 31.5], [57.354, 31.75], [57.25, 32.0], [57.457, 32.5], [57.302, 32.875], [57.0, 32.75], [56.47, 32.97], [56.25, 33.5], [56.47, 34.03], [56.823, 34.177], [56.97, 34.53], [57.5, 34.75], [58.03, 34.53]]]}}, "IPCC_regions": {"name": "IPCC regions", "description": "List of all IPCC regions affected", "value": ["W.C.Asia"]}, "polygons": {"name": "Polygons", "description": "Polygon vertices describing the boundary of the event at each time step", "value": {"2020-03-23T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[57.85355339059328, 31.75], [57.75, 32.0], [57.96966991411009, 32.53033008588991], [58.5, 32.75], [58.75, 32.64644660940672], [59.0, 32.75], [59.53033008588991, 32.53033008588991], [59.75, 32.0], [59.53033008588991, 31.46966991411009], [59.17677669529664, 31.32322330470336], [59.03033008588991, 30.96966991411009], [58.5, 30.75], [57.96966991411009, 30.96966991411009], [57.75, 31.5], [57.85355339059328, 31.75]]]}, "2020-03-24T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[56.82322330470336, 34.17677669529664], [56.96966991411009, 34.53033008588991], [57.5, 34.75], [58.03033008588991, 34.53033008588991], [58.17677669529664, 34.17677669529664], [58.30177669529664, 34.125], [58.46966991411009, 34.53033008588991], [59.0, 34.75], [59.53033008588991, 34.53033008588991], [59.67677669529664, 34.17677669529664], [60.03033008588991, 34.03033008588991], [60.17677669529664, 33.67677669529664], [60.53033008588991, 33.53033008588991], [60.75, 33.0], [60.64644660940672, 32.75], [60.75, 32.5], [60.64644660940672, 32.25], [60.67677669529664, 32.17677669529664], [61.03033008588991, 32.03033008588991], [61.25, 31.5], [61.03033008588991, 30.96966991411009], [60.5, 30.75], [60.25, 30.853553390593273], [60.0, 30.75], [59.75, 30.853553390593273], [59.5, 30.75], [59.25, 30.853553390593273], [59.17677669529664, 30.82322330470336], [59.03033008588991, 30.46966991411009], [58.5, 30.25], [57.96966991411009, 30.46966991411009], [57.82322330470336, 30.82322330470336], [57.46966991411009, 30.96966991411009], [57.25, 31.5], [57.35355339059328, 31.75], [57.25, 32.0], [57.45710678118655, 32.5], [57.30177669529664, 32.875], [57.0, 32.75], [56.46966991411009, 32.96966991411009], [56.25, 33.5], [56.46966991411009, 34.03033008588991], [56.82322330470336, 34.17677669529664]]]}, "2020-03-25T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[56.82322330470336, 34.17677669529664], [56.96966991411009, 34.53033008588991], [57.5, 34.75], [58.03033008588991, 34.53033008588991], [58.17677669529664, 34.17677669529664], [58.30177669529664, 34.125], [58.46966991411009, 34.53033008588991], [59.0, 34.75], [59.53033008588991, 34.53033008588991], [59.67677669529664, 34.17677669529664], [60.03033008588991, 34.03033008588991], [60.17677669529664, 33.67677669529664], [60.53033008588991, 33.53033008588991], [60.75, 33.0], [60.64644660940672, 32.75], [60.75, 32.5], [60.64644660940672, 32.25], [60.67677669529664, 32.17677669529664], [61.03033008588991, 32.03033008588991], [61.25, 31.5], [61.03033008588991, 30.96966991411009], [60.5, 30.75], [60.25, 30.853553390593273], [60.0, 30.75], [59.75, 30.853553390593273], [59.5, 30.75], [59.25, 30.853553390593273], [59.17677669529664, 30.82322330470336], [59.03033008588991, 30.46966991411009], [58.5, 30.25], [57.96966991411009, 30.46966991411009], [57.82322330470336, 30.82322330470336], [57.46966991411009, 30.96966991411009], [57.25, 31.5], [57.35355339059328, 31.75], [57.25, 32.0], [57.45710678118655, 32.5], [57.30177669529664, 32.875], [57.0, 32.75], [56.46966991411009, 32.96966991411009], [56.25, 33.5], [56.46966991411009, 34.03033008588991], [56.82322330470336, 34.17677669529664]]]}, "2020-03-26T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[56.82322330470336, 34.17677669529664], [56.96966991411009, 34.53033008588991], [57.5, 34.75], [58.03033008588991, 34.53033008588991], [58.17677669529664, 34.17677669529664], [58.30177669529664, 34.125], [58.46966991411009, 34.53033008588991], [59.0, 34.75], [59.53033008588991, 34.53033008588991], [59.67677669529664, 34.17677669529664], [60.03033008588991, 34.03033008588991], [60.17677669529664, 33.67677669529664], [60.53033008588991, 33.53033008588991], [60.75, 33.0], [60.64644660940672, 32.75], [60.75, 32.5], [60.64644660940672, 32.25], [60.67677669529664, 32.17677669529664], [61.03033008588991, 32.03033008588991], [61.25, 31.5], [61.03033008588991, 30.96966991411009], [60.5, 30.75], [60.25, 30.853553390593273], [60.0, 30.75], [59.75, 30.853553390593273], [59.5, 30.75], [59.25, 30.853553390593273], [59.17677669529664, 30.82322330470336], [59.03033008588991, 30.46966991411009], [58.5, 30.25], [57.96966991411009, 30.46966991411009], [57.82322330470336, 30.82322330470336], [57.46966991411009, 30.96966991411009], [57.25, 31.5], [57.35355339059328, 31.75], [57.25, 32.0], [57.45710678118655, 32.5], [57.30177669529664, 32.875], [57.0, 32.75], [56.46966991411009, 32.96966991411009], [56.25, 33.5], [56.46966991411009, 34.03033008588991], [56.82322330470336, 34.17677669529664]]]}, "2020-03-27T11:30:00.000000000": {"type": "Polygon", "coordinates": [[[57.75, 32.0], [57.96966991411009, 32.53033008588991], [58.5, 32.75], [59.03033008588991, 32.53033008588991], [59.25, 32.0], [59.03033008588991, 31.46966991411009], [58.5, 31.25], [57.96966991411009, 31.46966991411009], [57.75, 32.0]]]}}}, "max_amp": {"name": "Maximum anomaly amplitude", "description": "Maximum t2m anomaly recorded over entire duration", "value": -9.561338767445534}, "mean_amp": {"name": "Mean anomaly amplitude", "description": "Mean t2m anomaly over entire duration", "value": -6.592162252243026}, "evo_areamean": {"name": "Evolution of mean t2m", "description": "The daily evolution of mean t2m.", "value": [13.790816618047188, 8.452281964102838, 9.390904608103483, 10.802981143682302, 15.57448886041675]}, "evo_maxamp": {"name": "Evolution of maximum t2m", "description": "The daily evolution of maximum t2m.", "value": [10.738402131320072, 2.37950032800444, 4.208072647463325, 4.796617026129695, 15.57448886041675]}, "anom_evo_areamean": {"name": "Evolution of mean t2m anomalies", "description": "The daily evolution of mean t2m anomalies.", "value": [-5.6620707947268825, -7.442728089062232, -6.794933657864412, -5.691440002268248, -5.567061813145983]}, "anom_evo_maxamp": {"name": "Evolution of maximum t2m anomalies", "description": "The daily evolution of maximum t2m anomalies.", "value": [-5.800806991534216, -9.561338767445534, -8.919505438326212, -7.12762938223517, -5.567061813145983]}, "anom_scaled_evo_areamean": {"name": "Evolution of mean standardized t2m anomalies", "description": "The daily evolution of mean standardized t2m anomalies.", "value": [-1.4649516003796348, -1.915755595963637, -1.7279686350016137, -1.432325401773226, -1.3572764584472816]}, "anom_scaled_evo_maxamp": {"name": "Evolution of maximum standardized t2m anomalies", "description": "The daily evolution of maximum standardized t2m anomalies.", "value": [-1.4800031232556419, -2.378614209894863, -2.271218991362242, -1.7593985914382835, -1.3572764584472816]}}