netcdf CatOfLambWTyRSetAndGaleDaysBa_1_6186131972551505405 {
dimensions:
time = UNLIMITED ; // (366 currently)
bnds = 2 ;
variables:
float time(time) ;
time:standard_name = "time" ;
time:long_name = "Time" ;
time:calendar = "standard" ;
time:units = "days since 1900-01-01 00:00:00" ;
time:bounds = "time_bnds" ;
time:axis = "T" ;
short lambwt(time) ;
lambwt:flag_meanings = "NE SE SW NW A C" ;
lambwt:flag_values = 45s, 135s, 225s, 315s, -1s, 1s ;
lambwt:long_name = "lamb weather type" ;
lambwt:units = "1" ;
lambwt:cell_methods = "time: mean" ;
short rotation(time) ;
rotation:flag_meanings = "A C" ;
rotation:flag_values = -1s, 1s ;
rotation:long_name = "rotation type" ;
rotation:units = "1" ;
rotation:cell_methods = "time: mean" ;
short winddir(time) ;
winddir:flag_meanings = "NE SE SW NW" ;
winddir:flag_values = 45s, 135s, 225s, 315s ;
winddir:long_name = "wind direction" ;
winddir:units = "degree" ;
winddir:cell_methods = "time: mean" ;
winddir:standard_name = "wind_from_direction" ;
short galesev(time) ;
galesev:flag_meanings = "NUL G SG VSG" ;
galesev:flag_values = 0s, 1s, 2s, 3s ;
galesev:long_name = "gale severity" ;
galesev:units = "1" ;
galesev:cell_methods = "time: mean" ;
double time_bnds(time, bnds) ;
// global attributes:
:comment = "An ascii version of this dataset that is continuously updated is available at the BSH homepage https://www.bsh.de/EN/DATA/Climate-and-Sea/Weather-and-Gales/weather-and-gales_node.html." ;
:contact = " ; " ;
:Conventions = "CF-1.8 ATMODAT-3.0" ;
:creation_date = "2024-04-30T13:46:13" ;
:creator = "Peter Loewe ; https://orcid.org/0000-0001-8243-2111" ;
:featureType = "timeSeries" ;
:frequency = "day" ;
:metadata_link = "https://doi.org/10.26050/WDCC/LambWTyRSetAndGaleDaysOverTheBa" ;
:geospatial_lat_resolution = "point" ;
:geospatial_lon_resolution = "point" ;
:geospatial_vertical_resolution = "point" ;
:institution = "Bundesamt fuer Seeschifffahrt und Hydrographie, Hamburg, Germany" ;
:institution_id = "https://ror.org/03ycvrj88" ;
:keywords = "Earth Science > Atmosphere > Atmospheric Pressure > Sea Level Pressure, Lamb Weather Type, Earth Science > Atmosphere > Weather Events > Wind Storms > Gale, Baltic Sea, NCEP/NCAR Reanalysis, ATMODAT" ;
:keywords_vocabulary = "GCMD, None, GCMD, geonames, None, None" ;
:license = "CC BY 4.0" ;
:product_version = "1.0" ;
:realm = "atmos" ;
:references = "Jenkinson und Collison (1977), Synoptic Climatology Branch Memorandum, No. 62, 18pp., UK Met Office ; \r\nKalnay et al. (1996), https://doi.org/10.1175/1520-0477(1996)077<0437:TNYRP>2.0.CO;2 ; \r\nLoewe et al. (2006), https://urn.issn.org/URN:ISSN:0946-6010 (https://www.bsh.de/download/Berichte-des-BSH-40.pdf) ; \r\nLoewe et al. (2013), https://urn.issn.org/URN:ISSN:0946-6010 (https://www.bsh.de/download/Berichte-des-BSH-49.pdf) ; " ;
:source = "Weather-type and gale classification have been performed by BSH on NCEP/NCAR reanalysis 1 daily mean sea level pressure data provided by the NOAA Physical Sciences Laboratory, Boulder, Colorado, USA, and accessed from their website at https://psl.noaa.gov, specifically https://downloads.psl.noaa.gov/Datasets/ncep.reanalysis.dailyavgs/surface/slp.YYYY.nc, YYYY=1948,1949,...\"" ;
:standard_name_vocabulary = "CF Standard Name Table v78" ;
:summary = "Sea level pressure is a fundamental weather and climate element and the very basis of everyday weather maps. Daily sea level pressure distributions provide information on the influence of high and low pressure systems, air flow, weather activity, and, hence, synoptic conditions.\r\n\r\nUsing sea level pressure distributions from the NCEP/NCAR Reanalysis 1 (Kalnay et al., 1996) and a simplified variant of the weather-typing scheme by Jenkinson and Collison (1977) the atmospheric circulation over the Baltic Sea has been classified as to pattern and intensity on a daily basis starting in 1948. The analysis has been carried out on Jenkinson and Collison (1977)\'s original 16-point grid moved 15° eastward and 5° northward. Though formally valid at its central point (60°N, 20°E), results are representative of the Baltic Sea region between 55°N-65°N and 15°E-25°E. \r\nThe modified scheme (Loewe et al., 2006) allows for six weather types, namely four directional (NE=Northeast, SE, SW, NW) and two rotational types (C=cyclonic and A=anticyclonic). The strength of the atmospheric circulation is classified by way of a peak-over-threshold technique, employing re-calibrated thresholds G* of 29.9, 38.7, and 47.2 hPa for gale (G), severe gale (SG), and very severe gale (VSG), respectively. Technically, the set of weather-typing and gale-classification rules is implemented as a lean FORTRAN code (lwtbssim.f), internally known as \"Simple Lamb weather-typing scheme for the Baltic Sea\".\r\n\r\nBoth, weather types and gale days, form a catalogue of more than 70 annual calendars since 1948 that is presented and continuously updated to the present day at https://www.bsh.de/EN/DATA/Climate-and-Sea/Weather-and-Gales/weather-and-gales_node.html." ;
:title = "Lamb weather types (reduced set) and gale days over the Baltic Sea since 1948 based on NCEP/NCAR Reanalysis 1 sea level pressure fields." ;
:geospatial_lat_units = "degree_north" ;
:geospatial_lon_units = "degree_east" ;
:geospatial_bounds = "POLYGON ((15 65, 15 60, 15 55, 25 55, 25 60, 25 65, 15 65))" ;
:geospatial_bounds_crs = "EPSG:4326" ;
:publisher_name = "World Data Center for Climate (WDCC) at DKRZ" ;
:publisher_url = "https://www.wdc-climate.de" ;
:history = "2024-04-30T13:46:13: conversion to netCDF and addition of metadata with BSH_ascii_to_ATMODAT_annual_update_BalticSea.ipynb\n, 2021-12-08T19:55:40: Raw ASCII output data created with by BSH lwtbssim.f" ;
}