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Global Attributes:	title: Darwin/Tahiti Sea Level Pressure and various SOIs source: ftp.ncep.noaa.gov:/pub/cpc/wd52dg/data/indices http://www.cpc.ncep.noaa.gov/data/indices/index.html Darwin and Tahiti SLP prior to 1882 and 1935, respectively were added from the CRU [http://www.cru.uea.ac.uk/] process: Darwin and Tahiti sea level pressure were obtained from either of the above locations. The C-shell script /home/shea/soi/SOI.scr was run. comment: The variables SOI_SIGNAL, SOI_NOISE and SOI_DARWIN were derived using standardized values derived from monthly values over the 1951-1980 reference period. This is also the approach used by the Climate Prediction Center. As noted by Trenberth, better signal-to-noise ratios can be obtained using standardized values derived from annual values. The variables SOI_SIGNAL_AnnStd, SOI_NOISE_AnnStd and SOI_DARWIN_AnnStd were derived using the annual values over the 1951-1980 reference period. reference: Signal Versus Noise in the Southern Oscillation Trenberth, MWR, Feb 1984: 112:326-332 creation_date: Sun Feb 9 09:02:19 MST 2020

Variables:	time: Array of 32 bit Integers [time = 0..1859] time: units: YYYYMM long_name: calendar year month
	TIME: Array of 32 bit Reals [time = 0..1859] time: units: year and fraction of year long_name: TIME
	SOI_SIGNAL: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa: 1000 hPa subtracted long_name: SOI Signal using Trenberth method: monthly std
	SOI_NOISE: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa: 1000 hPa subtracted long_name: SOI Noise using Trenberth method: monthly std
	SOI_DARWIN: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa: 1000 hPa subtracted long_name: Darwin only SOI using Trenberth method: monthly std
	DARWIN: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 long_name: Darwin: Sea Level Pressure units: hPa: 1000 hPa subtracted
	TAHITI: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 long_name: Tahiti: Sea Level Pressure units: hPa: 1000 hPa subtracted
	DARWIN_ANOM: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa long_name: Darwin: slp anomalies: 1951-1980 means
	TAHITI_ANOM: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa long_name: Tahiti: slp anomalies: 1951-1980 means
	SOI_SIGNAL_AnnStd: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa: 1000 hPa subtracted long_name: SOI Signal using Trenberth method: annual std
	SOI_NOISE_AnnStd: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa: 1000 hPa subtracted long_name: SOI Noise using Trenberth method: annual std
	SOI_DARWIN_AnnStd: Array of 32 bit Reals [time = 0..1859] time: _FillValue: -99.9 units: hPa: 1000 hPa subtracted long_name: Darwin only SOI using Trenberth method: annual std

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DDS:

Dataset {
    Int32 time[time = 1860];
    Float32 TIME[time = 1860];
    Float32 SOI_SIGNAL[time = 1860];
    Float32 SOI_NOISE[time = 1860];
    Float32 SOI_DARWIN[time = 1860];
    Float32 DARWIN[time = 1860];
    Float32 TAHITI[time = 1860];
    Float32 DARWIN_ANOM[time = 1860];
    Float32 TAHITI_ANOM[time = 1860];
    Float32 SOI_SIGNAL_AnnStd[time = 1860];
    Float32 SOI_NOISE_AnnStd[time = 1860];
    Float32 SOI_DARWIN_AnnStd[time = 1860];
} Projects/ESM/jlou/data/NCAR_SOI.nc;

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