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Title: Climatological Data For Clouds Over the Globe From Surface Observations, 1982-1991: The Total Cloud Edition (1994) (NDP-026a)

Abstract

Routine, synoptic surface weather reports from ships and land stations over the entire globe, for the10-year period December 1981 through November 1991, were processed for total cloud cover and the frequencies of occurrence of clear sky, sky-obscured due to precipitation, and sky-obscured due to fog. Archived data, consisting of various annual, seasonal and monthly averages, are provided in grid boxes that are typically 2.5° × 2.5° for land and 5° × 5° for ocean. Day and nighttime averages are also given separately for each season. Several derived quantities, such as interannual variations and annual and diurnal harmonics, are provided as well. This data set incorporates an improved representation of nighttime cloudiness by utilizing only those nighttime observations for which the illuminance due to moonlight exceeds a specified threshold. This reduction in the night-detection bias increases the computed global average total cloud cover by about 2%. The impact on computed diurnal cycles is even greater, particularly over the oceans where it is found (in contrast to previous surface-based climatologies), that cloudiness is often greater at night than during the day.

Authors:
 [1];  [2];  [3]
  1. Univ. of Colorado, Boulder, CO (United States). Cooperative Inst. for Research in Environmental Sciences (CIRES)
  2. Department of Atmospheric Sciences, University of Colorado, Boulder, CO
  3. Department of Astrophysical, Planetary, and Atmospheric Sciences, University of Colorado, Boulder, CO
Publication Date:
Research Org.:
Environmental System Science Data Infrastructure for a Virtual Ecosystem (ESS-DIVE) (United States); 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)
OSTI Identifier:
1394926
Report Number(s):
NDP-026A
Resource Type:
Data
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Hahn, Carole J., Warren, Stephen G., and London, Julius. Climatological Data For Clouds Over the Globe From Surface Observations, 1982-1991: The Total Cloud Edition (1994) (NDP-026a). United States: N. p., 1994. Web. doi:10.3334/CDIAC/CLI.NDP026A.
Hahn, Carole J., Warren, Stephen G., & London, Julius. Climatological Data For Clouds Over the Globe From Surface Observations, 1982-1991: The Total Cloud Edition (1994) (NDP-026a). United States. doi:10.3334/CDIAC/CLI.NDP026A.
Hahn, Carole J., Warren, Stephen G., and London, Julius. Sat . "Climatological Data For Clouds Over the Globe From Surface Observations, 1982-1991: The Total Cloud Edition (1994) (NDP-026a)". United States. doi:10.3334/CDIAC/CLI.NDP026A. https://www.osti.gov/servlets/purl/1394926.
@article{osti_1394926,
title = {Climatological Data For Clouds Over the Globe From Surface Observations, 1982-1991: The Total Cloud Edition (1994) (NDP-026a)},
author = {Hahn, Carole J. and Warren, Stephen G. and London, Julius},
abstractNote = {Routine, synoptic surface weather reports from ships and land stations over the entire globe, for the10-year period December 1981 through November 1991, were processed for total cloud cover and the frequencies of occurrence of clear sky, sky-obscured due to precipitation, and sky-obscured due to fog. Archived data, consisting of various annual, seasonal and monthly averages, are provided in grid boxes that are typically 2.5° × 2.5° for land and 5° × 5° for ocean. Day and nighttime averages are also given separately for each season. Several derived quantities, such as interannual variations and annual and diurnal harmonics, are provided as well. This data set incorporates an improved representation of nighttime cloudiness by utilizing only those nighttime observations for which the illuminance due to moonlight exceeds a specified threshold. This reduction in the night-detection bias increases the computed global average total cloud cover by about 2%. The impact on computed diurnal cycles is even greater, particularly over the oceans where it is found (in contrast to previous surface-based climatologies), that cloudiness is often greater at night than during the day.},
doi = {10.3334/CDIAC/CLI.NDP026A},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {1}
}

Works referencing / citing this record:

Global anthropogenic aerosol effects on convective clouds in ECHAM5-HAM
journal, January 2008


Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM
journal, January 2007

  • Lohmann, U.; Stier, P.; Hoose, C.
  • Atmospheric Chemistry and Physics Discussions, Vol. 7, Issue 2
  • DOI: 10.5194/acpd-7-3719-2007

Influence of Giant CCN on warm rain processes in the ECHAM5 GCM
journal, January 2008


Cloud microphysics and aerosol indirect effects in the global climate model ECHAM5-HAM
journal, January 2007

  • Lohmann, U.; Stier, P.; Hoose, C.
  • Atmospheric Chemistry and Physics, Vol. 7, Issue 13
  • DOI: 10.5194/acp-7-3425-2007

Global anthropogenic aerosol effects on convective clouds in ECHAM5-HAM
journal, January 2007