Prec

Just my own personal notes and source  :p

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Water Vapor Animations (last 3 days) – Eastern Hemisphere

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Akumulasi CH time series dan normal

INDONESIA 30 90 365

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GEWEX dataset

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Explanation and Links


A new sea surface temperature (SST) climatology for the 1971-2000 base
period was constructed using the method of Reynolds and Smith (1995)
and Smith and Reynolds (1998).

The new climatology was built from two intermediate climatologies:
a 2 degree SST climatology developed from in situ data for the
period 1971-2000, and a 1 degree SST climatology for the period
1982-2000 derived from the second version optimum interpolation (OI.v2)
SST analysis.  The OI.v2 is a major improvement over the original
OI analysis (OI.v1) at high latitudes due to a new ice algorithm
(Reynolds et. al. 2002).  The OI.v2 was put into operation at the
Climate Prediction Center in August 2001.

The changes in the climatology are caused by the changes in the base
period as well as the changes in the OI analysis. The figures at
http://www.cpc.noaa.gov/products/predictions/30day/SSTs/sst_clim.html
show the new SST climatology (column 1), the changes of climatology
due to the changes in the base period (column 2), and the changes of
climatology due to the changes in the OI analysis (column 3). In the
tropics and subtropics, the changes in the climatology are largely due
to the changes in the base period, and are generally small with absolute
differences usually less than 0.2°C (column 2 and column 3).  However,
in high latitudes the changes in climatology are due to the changes in
the OI analysis alone. This is because there are insufficient in situ
observations in high latitudes prior to 1982, and the climatology is
based on the OI analysis alone (1982-2000). It is seen that the changes
of climatology due to the changes in the OI analysis often
exceed 1°C (third column).

The OI.v2 can be downloaded from
 ftp://ftp.emc.ncep.noaa.gov/cmb/sst/oisst_v2,
and the SST climatology derived with OI.v2 for the 1971-2000
and 1961-1990 base periods can be downloaded from
 ftp://prd.cpc.ncep.noaa.gov/wd52yx/sstclim.

Questions can be sent to Yan Xue at yan.xue@noaa.gov.

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