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Title: Cloud Climatology for Land Stations Worldwide, 1971-2009 (NDP-026D)

Surface synoptic weather reports for 39 years have been processed to provide a climatology of clouds for each of over 5000 land-based weather stations with long periods of record both day and night. For each station, this digital archive includes: multi-year annual, seasonal and monthly averages for day and night separately; seasonal and monthly averages by year; averages for eight times per day; and analyses of the first harmonic for the annual and diurnal cycles. Averages are given for total cloud cover, clear-sky frequency, and 9 cloud types: 5 in the low level (fog, St, Sc, Cu, Cb), 3 in the middle level (Ns, As, Ac) and one in the high level (all cirriform clouds combined). Cloud amounts and frequencies of occurrence are given for all types. In addition, non-overlapped amounts are given for middle and high cloud types, and average base heights are given for low cloud types. Nighttime averages were obtained by using only those reports that met an "illuminance criterion" (i.e., made under adequate moonlight or twilight), thus making possible the determination of diurnal cycles and nighttime trends for cloud types.The authors have also produced an online, gridded atlas of the cloud observations contained in NDP-026D. Themore » Online Cloud Atlas containing NDP-026D data is available via the University of Washington. « less
Authors:
 [1] ;  [2] ;  [2]
  1. University of Arizona
  2. University of Washington
Publication Date:
Report Number(s):
NPD-026D
ORNL/CDIAC-123
Product Type:
Dataset
Research Org(s):
Environmental System Science Data Infrastructure for a Virtual Ecosystem; Carbon Dioxide Information Analysis Center (CDIAC), Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Subject:
54 ENVIRONMENTAL SCIENCES
OSTI Identifier:
1394932

Hahn, C. J., Warren, S. G., and Eastman, R. Cloud Climatology for Land Stations Worldwide, 1971-2009 (NDP-026D). United States: N. p., Web. doi:10.3334/CDIAC/cli.ndp026d.
Hahn, C. J., Warren, S. G., & Eastman, R. Cloud Climatology for Land Stations Worldwide, 1971-2009 (NDP-026D). United States. doi:10.3334/CDIAC/cli.ndp026d.
Hahn, C. J., Warren, S. G., and Eastman, R. 2012. "Cloud Climatology for Land Stations Worldwide, 1971-2009 (NDP-026D)". United States. doi:10.3334/CDIAC/cli.ndp026d. https://www.osti.gov/servlets/purl/1394932.
@misc{osti_1394932,
title = {Cloud Climatology for Land Stations Worldwide, 1971-2009 (NDP-026D)},
author = {Hahn, C. J. and Warren, S. G. and Eastman, R.},
abstractNote = {Surface synoptic weather reports for 39 years have been processed to provide a climatology of clouds for each of over 5000 land-based weather stations with long periods of record both day and night. For each station, this digital archive includes: multi-year annual, seasonal and monthly averages for day and night separately; seasonal and monthly averages by year; averages for eight times per day; and analyses of the first harmonic for the annual and diurnal cycles. Averages are given for total cloud cover, clear-sky frequency, and 9 cloud types: 5 in the low level (fog, St, Sc, Cu, Cb), 3 in the middle level (Ns, As, Ac) and one in the high level (all cirriform clouds combined). Cloud amounts and frequencies of occurrence are given for all types. In addition, non-overlapped amounts are given for middle and high cloud types, and average base heights are given for low cloud types. Nighttime averages were obtained by using only those reports that met an "illuminance criterion" (i.e., made under adequate moonlight or twilight), thus making possible the determination of diurnal cycles and nighttime trends for cloud types.The authors have also produced an online, gridded atlas of the cloud observations contained in NDP-026D. The Online Cloud Atlas containing NDP-026D data is available via the University of Washington.},
doi = {10.3334/CDIAC/cli.ndp026d},
year = {2012},
month = {8} }
  1. The U.S. Department of Energy’s (DOE) Environmental Systems Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) is a data archive for Earth and environmental science data. The mission of ESS-DIVE is to preserve, expand access to, and improve usability of critical data generated through DOE-sponsored research of terrestrial and subsurface ecosystems. By making ESS research data easily accessible, ESS-DIVE has the potential to advance the scientific understanding and prediction of hydro-biogeochemical and ecosystem processes that occur from bedrock through soil and vegetation to the atmospheric interface.
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