ICOADS Long-Term Means
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SST for April 2021 R3.0.2 is missing data values. The issue is being investigated by the data providers.
Brief Description:
- The International Comprehensive Ocean-Atmosphere Data Set (ICOADS) is the most extensive collection of surface marine data spanning the past three centuries, together with simple gridded monthly summary products extending from 1800 forward.
Temporal Coverage:
- Long-term monthly means, and percentage of years with extant data making up each climatological mean value, derived from data spanning 1971 - 2000 and 1981 - 2010.
- Long-term monthly means, derived from data for years 1950 - 1979.
Spatial Coverage:
- 2.0 degree latitude x 2.0 degree longitude global grid (90x180).
- 89.0N - 89.0S, 1.0E - 359.0E.
Levels:
- Sea Surface
Update Schedule:
- Static
Download/Plot Data: (FTP Access)
- 1981 - 2010 long-term monthly means based on ICOADS Release 3.0 enhanced data.
Variable Statistic Level Download File Create Plot/Subset Sea Surface Temperature (S) Long-Term Mean
Percentage of Years in ClimatologySurface sst.ltm.nc
sst.ltm.perc.ncAir Temperature (A) Long-Term Mean
Percentage of Years in ClimatologySurface air.ltm.nc
air.ltm.perc.ncScalar Wind (W) Long-Term Mean
Percentage of Years in ClimatologySurface wspd.ltm.nc
wspd.ltm.perc.ncU-wind (U) Long-Term Mean
Percentage of Years in ClimatologySurface uwnd.ltm.nc
uwnd.ltm.perc.ncV-wind (V) Long-Term Mean
Percentage of Years in ClimatologySurface vwnd.ltm.nc
vwnd.ltm.perc.ncSea Level Pressure (P) Long-Term Mean
Percentage of Years in ClimatologySurface slp.ltm.nc
slp.ltm.perc.ncCloudiness (C) Long-Term Mean
Percentage of Years in ClimatologySurface cldc.ltm.nc
cldc.ltm.perc.ncSpecific Humidity (Q) Long-Term Mean
Percentage of Years in ClimatologySurface shum.ltm.nc
shum.ltm.perc.ncRelative Humidity (R) Long-Term Mean
Percentage of Years in ClimatologySurface rhum.ltm.nc
rhum.ltm.perc.ncSea-air Temperature difference (S-A) Long-Term Mean
Percentage of Years in ClimatologySurface smina.ltm.nc
smina.ltm.perc.ncSensible Heat Parameter ([S-A]*W) Long-Term Mean
Percentage of Years in ClimatologySurface sflx.ltm.nc
sflx.ltm.perc.ncSat Sp Hum at SST minus Sp Hum (Qs-Q) Long-Term Mean
Percentage of Years in ClimatologySurface qsminq.ltm.nc
qsminq.ltm.perc.ncLatent Heat Parameter ([Qs-Q]*W) Long-Term Mean
Percentage of Years in ClimatologySurface lflx.ltm.nc
lflx.ltm.perc.ncU-wind Stress (U*W) Long-Term Mean
Percentage of Years in ClimatologySurface upstr.ltm.nc
upstr.ltm.perc.ncV-wind Stress (V*W) Long-Term Mean
Percentage of Years in ClimatologySurface vpstr.ltm.nc
vpstr.ltm.perc.ncSensible Heat Trans Eastward Param (U*A) Long-Term Mean
Percentage of Years in ClimatologySurface uairt.ltm.nc
uairt.ltm.perc.ncSensible Heat Trans Northward Param (V*A) Long-Term Mean
Percentage of Years in ClimatologySurface vairt.ltm.nc
vairt.ltm.perc.ncLatent Heat Trans Eastward Param (U*Q) Long-Term Mean
Percentage of Years in ClimatologySurface uspeh.ltm.nc
uspeh.ltm.perc.ncLatent Heat Trans Northward Param (V*Q) Long-Term Mean
Percentage of Years in ClimatologySurface vspeh.ltm.nc
vspeh.ltm.perc.ncZonal Latent Heat Parameter (U*[Qs-Q]) Long-Term Mean
Percentage of Years in ClimatologySurface ulflx.ltm.nc
ulflx.ltm.perc.ncMeridional Latent Heat Parameter (V*[Qs-Q]) Long-Term Mean
Percentage of Years in ClimatologySurface vlflx.ltm.nc
vlflx.ltm.perc.ncScalar Wind cubed (W*W*W) Long-Term Mean
Percentage of Years in ClimatologySurface wspd3.ltm.nc
wspd3.ltm.perc.nc
- 1971 - 2000 long-term monthly means based on ICOADS Release 2.5 enhanced data.
Variable Statistic Level Download File Create Plot/Subset Sea Surface Temperature (S) Long-Term Mean
Percentage of Years in ClimatologySurface sst.ltm.nc
sst.ltm.perc.ncAir Temperature (A) Long-Term Mean
Percentage of Years in ClimatologySurface air.ltm.nc
air.ltm.perc.ncScalar Wind (W) Long-Term Mean
Percentage of Years in ClimatologySurface wspd.ltm.nc
wspd.ltm.perc.ncU-wind (U) Long-Term Mean
Percentage of Years in ClimatologySurface uwnd.ltm.nc
uwnd.ltm.perc.ncV-wind (V) Long-Term Mean
Percentage of Years in ClimatologySurface vwnd.ltm.nc
vwnd.ltm.perc.ncSea Level Pressure (P) Long-Term Mean
Percentage of Years in ClimatologySurface slp.ltm.nc
slp.ltm.perc.ncCloudiness (C) Long-Term Mean
Percentage of Years in ClimatologySurface cldc.ltm.nc
cldc.ltm.perc.ncSpecific Humidity (Q) Long-Term Mean
Percentage of Years in ClimatologySurface shum.ltm.nc
shum.ltm.perc.ncRelative Humidity (R) Long-Term Mean
Percentage of Years in ClimatologySurface rhum.ltm.nc
rhum.ltm.perc.ncSea-air Temperature difference (S-A) Long-Term Mean
Percentage of Years in ClimatologySurface smina.ltm.nc
smina.ltm.perc.ncSensible Heat Parameter ([S-A]*W) Long-Term Mean
Percentage of Years in ClimatologySurface sflx.ltm.nc
sflx.ltm.perc.ncSat Sp Hum at SST minus Sp Hum (Qs-Q) Long-Term Mean
Percentage of Years in ClimatologySurface qsminq.ltm.nc
qsminq.ltm.perc.ncLatent Heat Parameter ([Qs-Q]*W) Long-Term Mean
Percentage of Years in ClimatologySurface lflx.ltm.nc
lflx.ltm.perc.ncU-wind Stress (U*W) Long-Term Mean
Percentage of Years in ClimatologySurface upstr.ltm.nc
upstr.ltm.perc.ncV-wind Stress (V*W) Long-Term Mean
Percentage of Years in ClimatologySurface vpstr.ltm.nc
vpstr.ltm.perc.ncSensible Heat Trans Eastward Param (U*A) Long-Term Mean
Percentage of Years in ClimatologySurface uairt.ltm.nc
uairt.ltm.perc.ncSensible Heat Trans Northward Param (V*A) Long-Term Mean
Percentage of Years in ClimatologySurface vairt.ltm.nc
vairt.ltm.perc.ncLatent Heat Trans Eastward Param (U*Q) Long-Term Mean
Percentage of Years in ClimatologySurface uspeh.ltm.nc
uspeh.ltm.perc.ncLatent Heat Trans Northward Param (V*Q) Long-Term Mean
Percentage of Years in ClimatologySurface vspeh.ltm.nc
vspeh.ltm.perc.ncZonal Latent Heat Parameter (U*[Qs-Q]) Long-Term Mean
Percentage of Years in ClimatologySurface ulflx.ltm.nc
ulflx.ltm.perc.ncMeridional Latent Heat Parameter (V*[Qs-Q]) Long-Term Mean
Percentage of Years in ClimatologySurface vlflx.ltm.nc
vlflx.ltm.perc.ncScalar Wind cubed (W*W*W) Long-Term Mean
Percentage of Years in ClimatologySurface wspd3.ltm.nc
wspd3.ltm.perc.nc
- 1950 - 1979 long-term monthly means based on original COADS Release 1 (1854-1979) data.
Variable Statistic Level Download File Create Plot/Subset Sea Surface Temperature (S) Long-Term Mean Surface sst.ltm.nc Air Temperature (A) Long-Term Mean Surface air.ltm.nc Scalar Wind (W) Long-Term Mean Surface wspd.ltm.nc U-wind (U) Long-Term Mean Surface uwnd.ltm.nc V-wind (V) Long-Term Mean Surface vwnd.ltm.nc Sea Level Pressure (P) Long-Term Mean Surface slp.ltm.nc Cloudiness (C) Long-Term Mean Surface cldc.ltm.nc Specific Humidity (Q) Long-Term Mean Surface shum.ltm.nc Relative Humidity (R) Long-Term Mean Surface rhum.ltm.nc Sensible Heat Parameter ([S-A]*W) Long-Term Mean Surface sflx.ltm.nc Latent Heat Parameter ([Qs-Q]*W) Long-Term Mean Surface lflx.ltm.nc U-wind Stress (U*W) Long-Term Mean Surface upstr.ltm.nc V-wind Stress (V*W) Long-Term Mean Surface vpstr.ltm.nc
Usage Restrictions:
- None
Detailed Description:
- Simple long-term monthly means, and percentage of years with extant data making up each climatological mean value, derived from ICOADS Release 3.0 (1981-2010) enhanced data.
- Simple long-term monthly means, and percentage of years with extant data making up each climatological mean value, derived from ICOADS Release 2.5 (1971-2000) enhanced data.
- Simple long-term monthly mean files constructed from the original COADS Release 1 (1854-1979) data.
Caveats:
- Small numerical biases in previous netCDF files are described here.
Related File Naming & Structure Information:
File Names:
- var.stat[.perc].nc (In directory: /Datasets/icoads/2degree/enh/LTMs1981-2010)
- var.stat[.perc].nc (In directory: /Datasets/icoads/2degree/enh/LTMs1971-2000)
- var.stat.nc (In directory: /Datasets/icoads/2degree/LTMs1950-1979)
Dataset Format and Size:
- PSL standard NetCDF >392 Kbyte file for each long-term mean and percentage of years in climatology files (packed).
- PSL standard NetCDF >781 Kbyte file for each long-term mean wspd3 file.
Missing Data:
- Missing data is flagged with a value of 32766s.
Citation:
- Please note: If you acquire ICOADS data products from PSL, we ask that you acknowledge us in your use of the data. This may be done by including text such as ICOADS data provided by the NOAA/OAR/ESRL PSL, Boulder, Colorado, USA, from their Web site at / in any documents or publications using these data. We would also appreciate receiving a copy of the relevant publications. This will help PSL to justify keeping the ICOADS data set freely available online in the future. Thank you!
References:
- Please refer to the ICOADS Website Publications page.
Original Source:
- Multinational. The US contribution is the result of a cooperative project between the National Oceanic and Atmospheric Administration (NOAA)--specifically its Earth System Research Laboratories (ESRL), its National Centers for Environmental Information (NCEI), and the Cooperative Institute for Research in Environmental Sciences (CIRES), conducted jointly with the University of Colorado--and the National Science Foundation's National Center for Atmospheric Research (NCAR).
Contact:
- NetCDF questions:
Physical Sciences Laboratory: Data Management
NOAA/ESRL/PSL
325 Broadway
Boulder, CO 80305-3328
psl.data@noaa.gov - Dataset questions:
Eric Freeman, Team STG, Inc./ERT
NOAA National Centers for Environmental Information (NCEI)
Center for Coasts, Oceans and Geophysics (CCOG)
151 Patton Avenue
Asheville, NC 28801-5001 USA
Phone: +1 828-271-4463 (Fax: -4022)
e-mail: Eric.Freeman@noaa.gov
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