Dataset Information

title: Multisensor Advanced Climatology of LWP (MAC-LWP) Cloud-Component Only LWP (CloudLWP) Diurnal Cycle Fit Parameters
Identifier_Product_DOI_Authority: http://dx.doi.org/
Identifier_Product_DOI: 10.5067/MEASURES/MACLWPD
institution: Columbia University/NASA GISS, New York, NY; and Colorado State University, Fort Collins, CO
source: Based upon Remote Sensing Systems (RSS) V7 SSM/I, V7 SSMIS, V7 WindSat, V7 AMSR-E, V7 AMSR-2, V7 TMI, and V8.1 GMI 0.25 Degree Cloud LWP Retrievals. Co-located AMSR-E/MODIS data have revealed the presence of a bias in Cloud LWP (positive Cloud LWP when there should be none). Thus, all sensor and scene 0.25 Degree Cloud LWP data are bias-corrected to account for this discrepancy.
history: This MAC-LWP Version 1 field was created on Feb 2017. The MAC-LWP product, further described in Elsaesser et al. (2017, J. Climate), is an extension of the heritage UWisc CloudLWP climatology (O'Dell et al. 2008). The use of the latest Remote Sensing Systems (RSS) input datasets, several new satellite sensors, a total (cloud+rain) liquid water path field, and a cloud water bias correction are new relative to the UWisc product.
references: MAC-LWP product and data fields are described in Elsaesser et al. 2017 (J. Climate).
comments: Diurnal Cycle was fit to the following equation:\012 CloudLWP(T) = M + A1 cos(T-T1) + A2 cos 2(T-T2)\012 where the 5 fit parameters are {M,A1,T1,A2,T2}For cases where Nfit=1, the 2nd harmonic term was not used in the fit\012For cases where Nfit=0, no diurnal cycle was fit; only a mean is found.\012All times are effective local time in hours, LOCAL_TIME_HR.\012The effective local time in hours runs from 0-24 and is defined as:\012 LOCAL_TIME_HR = UTC_TIME_HR + LON/15
contacts: Greg Elsaesser: gregory.elsaesser@columbia.edu; Chris O'Dell: odell@atmos.colostate.edu; Matt Lebsock: matthew.d.lebsock@jpl.nasa.gov; Frank Wentz: frank.wentz@remss.com.
Conventions: CF-1.6

Variables in this Dataset

lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
lon_bnds: Array of 32 bit Reals [lon = 0..359][bnds = 0..1]
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lat_bnds: Array of 32 bit Reals [lat = 0..179][bnds = 0..1]
meanfit: Grid
long_name: Diurnal Cycle Fitted M, the mean CloudLWP
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
meanfit: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Diurnal Cycle Fitted M, the mean CloudLWP
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
amp1: Grid
long_name: Diurnal Cycle Fitted A1, the first harmonic amplitude of CloudLWP
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
amp1: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Diurnal Cycle Fitted A1, the first harmonic amplitude of CloudLWP
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
phase1: Grid
long_name: Diurnal Cycle Fitted T1, the first harmonic phase of CloudLWP
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
phase1: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Diurnal Cycle Fitted T1, the first harmonic phase of CloudLWP
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
amp2: Grid
long_name: Diurnal Cycle Fitted A2, the second harmonic amplitude of CloudLWP
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
amp2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Diurnal Cycle Fitted A2, the second harmonic amplitude of CloudLWP
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
phase2: Grid
long_name: Diurnal Cycle Fitted T2, the second harmonic phase of CloudLWP
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
phase2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Diurnal Cycle Fitted T2, the second harmonic phase of CloudLWP
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details on fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_meanfit: Grid
long_name: Statistical Error on M (the mean CloudLWP)
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_meanfit: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error on M (the mean CloudLWP)
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_amp1: Grid
long_name: Statistical Error on A1 (the first harmonic amplitude of CloudLWP)
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_amp1: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error on A1 (the first harmonic amplitude of CloudLWP)
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_phase1: Grid
long_name: Statistical Error on T1 (the first harmonic phase of CloudLWP)
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_phase1: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error on T1 (the first harmonic phase of CloudLWP)
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_amp2: Grid
long_name: Statistical Error on A2 (the second harmonic amplitude of CloudLWP)
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_amp2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error on A2 (the second harmonic amplitude of CloudLWP)
units: g/m^2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_phase2: Grid
long_name: Statistical Error on T2 (the second harmonic phase of CloudLWP)
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_phase2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error on T2 (the second harmonic phase of CloudLWP)
units: hr
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_M_A1: Grid
long_name: Statistical Error Correlation on M and A1
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_M_A1: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on M and A1
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_M_T1: Grid
long_name: Statistical Error Correlation on M and T1
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_M_T1: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on M and T1
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_M_A2: Grid
long_name: Statistical Error Correlation on M and A2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_M_A2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on M and A2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_M_T2: Grid
long_name: Statistical Error Correlation on M and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_M_T2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on M and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_A1_T1: Grid
long_name: Statistical Error Correlation on A1 and T1
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_A1_T1: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on A1 and T1
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_A1_A2: Grid
long_name: Statistical Error Correlation on A1 and A2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_A1_A2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on A1 and A2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_A1_T2: Grid
long_name: Statistical Error Correlation on A1 and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_A1_T2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on A1 and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_T1_A2: Grid
long_name: Statistical Error Correlation on T1 and A2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_T1_A2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on T1 and A2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_T1_T2: Grid
long_name: Statistical Error Correlation on T1 and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_T1_T2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on T1 and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
error_correlation_A2_T2: Grid
long_name: Statistical Error Correlation on A2 and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
error_correlation_A2_T2: Array of 32 bit Reals [lat = 0..179][lon = 0..359]
long_name: Statistical Error Correlation on A2 and T2
missing_value: -999.000000
_FillValue: -999.000000
comment: See global attribute COMMENTS for details fitting parameters and fitting equation.
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
npoints: Grid
long_name: Number of Satellite Overpasses contributing to the fit
missing_value: 0
_FillValue: 0
npoints: Array of 16 bit Integers [lat = 0..179][lon = 0..359]
long_name: Number of Satellite Overpasses contributing to the fit
missing_value: 0
_FillValue: 0
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds
nfit: Grid
long_name: Fitting Order performed. 0: M only; 1: {M,A1,T1}; 2: {M,A1,T1,A2,T2}
missing_value: -1
_FillValue: -1
nfit: Array of 16 bit Integers [lat = 0..179][lon = 0..359]
long_name: Fitting Order performed. 0: M only; 1: {M,A1,T1}; 2: {M,A1,T1,A2,T2}
missing_value: -1
_FillValue: -1
lat: Array of 32 bit Reals [lat = 0..179]
long_name: latitude
units: degrees_north
axis: Y
bounds: lat_bnds
lon: Array of 32 bit Reals [lon = 0..359]
long_name: longitude
units: degrees_east
axis: X
bounds: lon_bnds