SRB_REL3.0_LONGWAVE_CLDPROPS_3HRLY - GEWEX Longwave 3-hourly Cloud Properties 1.0 Introduction This README file provides information on the SRB_REL3.0_LONGWAVE_CLOUDPROPS_3HRLY data set. This data set provides 3-hourly global fields of 47 surface and cloud properties that serve as inputs to the GEWEX longwave algorithm of the NASA World Climate Research Programme/Global Energy and Water-Cycle Experiment (WCRP/GEWEX) Surface Radiation Budget (SRB) Project. If users have questions, please contact the Langley Atmospheric Science Data Center (ASDC) User and Data Services Office at: Atmospheric Science Data Center User and Data Services Office Mail Stop 157D NASA Langley Research Center Hampton, Virginia 23681-2199 U.S.A. E-mail: support-asdc@earthdata.nasa.gov Phone: (757)864-8656 FAX: (757)864-8807 URL: http://eosweb.larc.nasa.gov This readme includes the following sections: 1.0 Introduction 2.0 Data Set Description 2.1 Data Quality 2.2 Input Information 2.3 Grid Description 2.4 Points of Contact 3.0 Format and Packaging 4.0 Science Parameters Information 5.0 Sample Read Software Description 6.0 Implementing the Sample Read Software 7.0 Sample Output References 2.0 Data Set Description These 47 parameters fall into 19 classes; there are multiple parameters in some classes as listed below: 1. GLW Skin Temperature (glw_skint) 2. GEOS Skin Temperature (geos_skint) 3. ISCCP Skin Temperature (isccp_skint) 4. Precipitable Water (pw) 5. Snow/Ice Percentage (snow) 6. Day/Night flag (daynite; 1=Day, 0=Night) 7. Total Cloud Fraction (tot_cld_frac) 8. Total Cloud Top Pressure (tot_cld_pres) 9. Total Cloud Top Temperature (tot_cld_temp) 10. Total Cloud Optical Depth (tot_cld_tau) 11. Surface Pressure (sfc_pres) 12. Total Column Ozone (tot_column_o3) 13-17. Cloud Fraction for 5 cloud types (cfr) 13. high ice 14. mid-level ice 15. mid-level water 16. low-level ice 17. low-level water 18-22. Cloud Visible Optical Depth for 5 cloud types (tau) 18. high ice 19. mid-level ice 20. mid-level water 21. low-level ice 22. low-level water 23-27. Cloud particle size for 5 cloud types (cre) (droplet radius for water clouds; effective diameter for ice clouds) 23. high ice 24. mid-level ice 25. mid-level water 26. low-level ice 27. low-level water 28-32. Cloud Top Temperature for 5 cloud types (ctt) 28. high ice 29. mid-level ice 30. mid-level water 31. low-level ice 32. low-level water 33-37. Cloud Top Pressure for 5 cloud types (ctp) 33. high ice 34. mid-level ice 35. mid-level water 36. low-level ice 37. low-level water 38-42. Cloud Base Pressure for 5 cloud types (cbp) 38. high ice 39. mid-level ice 40. mid-level water 41. low-level ice 42. low-level water 43-47. Cloud Water or Ice Content for 5 cloud types (cwc) 43. high ice 44. mid-level ice 45. mid-level water 46. low-level ice 47. low-level water These parameters are derived on a 3-hourly temporal resolution (i.e., a global instantaneous gridded field every 3 hours). The 8 3-hourly times per day are UT hours: 00, 03, 06, 09, 12, 15, 18, and 21. The current version of the data sets is identified as Release 3.0. The sources for these inputs are briefly described below. Please contact Dr. Paul W. Stackhouse Jr. at the address below for further details. Version History: Release 2.1: 12 year data set (July 1983-October 1995), on nested grid (described in Section 2.3), using GEOS-1 meteorological data. Release 2.5: 22 year data set (July 1983-June 2005). Using GEOS-4 meteorological inputs for the data set in place of GEOS-1. Release 3.0: 24.5 year data set (July 1983-December 2007). Includes corrected ozone profile values. Improvements and corrections were applied to the basic cloud property inputs. These include changing the missing and glint area filling procedures to ensure that the cloud fractions of individual cloud types sum to the total cloud for both VIS/IR and IR-only ISCCP retrieved cloud properties. Additionally, the method to fill data gaps in cloud optical depths and temperatures was altered so that the interpolation better accounts for the radiative effects between components and total cloud (i.e., optical depths are logarithmically averaged, etc.). 2.1 Data Quality The authors have not done any independent validation of the parameters provided in these files. The purpose in providing these data is to enable the users to make flux computations on their own using any algorithms (including the one used in our work), if they so desire. To get an assessment of the quality, the users should refer to the original sources of these data. 2.1.2. Indian Ocean Gap Artifact There is a visible and common artifact in much of the data set period, due to a lack of coverage from geostationary satellites over an area centered on 70 degrees east longitude. This situation , commonly called the Indian Ocean gap, occurs for all of the July 1983 - June 1998 time period, except for April 1988 - March 1989, when data from the INSAT satellite is available to cover the gap. In July of 1998, Meteosat-5 was moved over the gap area, eliminating the gap. When the Indian Ocean gap occurs, the gap area is covered by polar orbiting satellites, which can result in only one or two daytime overpasses per day. Geosynchronous temporal sampling during the daytime is 3-5 times per day depending upon the latitude (between 55 degrees North and South) and the time or year. In addition, the limbs of the geostationary satellites which bound the gap may suffer from spuriously high cloud amounts, due to large view angles. This results in an abrupt drop-off of cloud fraction in the gap as compared to the gap boundary. 2.2 Input Information Inputs to the algorithm were obtained from the following sources: Cloud parameters were derived from the International Satellite Cloud Climatology Project (Rossow and Schiffer, 1999) DX data product. The cloud pixels were separated into categories of high, middle and low where middle and low clouds could be composed of ice or water. Cloud fractions and cloud optical depths were determined within these categories. Cloud particle sizes were assumed and cloud physical thicknesses were also assigned based upon information from literature. Random overlap is used between the high, middle and low layers to better approximate undercast conditions. Temperature and moisture profiles were obtained from the 4-D data assimilation Goddard EOS Data Assimilation System, level-4 (GEOS-4) obtained from the Global Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center (GSFC) (Bloom et al., 2005) Column ozone values for most of the duration of this dataset (July 1983 to December 2004) were obtained primarily from the Total Ozone Mapping Spectrometer (TOMS) archive. For the early period (July 1983-November 1994), TOMS data came from NIMBUS-7 and Meteor-3 satellites. There was an interruption of about 20 months (December 1994-July 1996) after which TOMS data from EP-TOMS became available in August 1996 and continued until December 2004. All gaps in TOMS data, including those over the polar night areas every year, were filled with column ozone values from TIROS Operational Vertical Sounder (TOVS) data. Column ozone data continued to be available beyond December 2004 from OMI instrument aboard Aura satellite but TOVS data, which is essential for filling the gaps in OMI data, developed some unexplained gaps of its own and became unusable. Beginning in January 2005, GEWEX/SRB started using a daily analysis ozone product from NOAA Climate Predictions Center (CPC), known as the Stratospheric Monitoring-group Ozone Blended Analysis (SMOBA). 2.3 Grid Description The properties are generated on a nested grid, which contains 44016 cells. The grid has a resolution of 1 degree latitude globally, and longitudinal resolution ranging from 1 degree in the tropics and subtropics to 120 degrees at the poles. The first cell is Latitude 89-90 degrees South, Longitude 0-120 degrees East. The cells start at the Greenwich meridian and proceed east around the globe, then shift one degree to the north. The number of cells per latitude band starting at the South Pole are: 3, 45, 45, 45, 45, 45, 45, 45, 45, 45, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 360, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 180, 90, 90, 90, 90, 90, 90, 90, 90, 90, 90, 45, 45, 45, 45, 45, 45, 45, 45, 45, 3 The read software described below contains a subroutine to regrid the fluxes to 1 degree latitude by 1 degree longitude grid using replication. 2.4 Points of Contact Scientific contact: Dr. Paul W. Stackhouse Jr. Mail Stop 420 NASA Langley Research Center Hampton, VA 23681-2199 U.S.A. E-mail: Paul.W.Stackhouse@nasa.gov Production Contact: Atmospheric Science Data Center User and Data Services Office Mail Stop 157D NASA Langley Research Center Hampton, VA 23681-2199 U.S.A. E-mail: support-asdc@earthdata.nasa.gov 3.0 Format and Packaging These data are provided as daily files each of which contains 3-hourly global fields of the 47 parameters described in Section 4.0 on an approximately 1 deg x 1 deg equal-area grid described in Section 2.3. The files contain binary data and are named according to the following convention: srb_rel3.0_longwave_cldprops_3hrly_yyyymmdd.binary, where srb Project name, Surface Radiation Budget rel3.0 Release number for these data (Release 3.0) longwave Name of the algorithm, GEWEX Longwave cldprops Denotes cloud properties 3hrly Time resolution of the data set yyyy 4-digit year for these data mm 2-digit month for these data dd 2-digit day for these data binary file format 4.0 Science Parameters Information The files contain global fields of 3-hourly values of the 47 parameters on the nested grid. Each files has 424 (53x8) records; 53 records for each 3-hourly time (00, 03, 06, 09, 12, 15, 18, and 21 UT). Notes: Parameters in the same classes are described together in the list below. The values in the cloud particle size fields represent droplet radius for water clouds and effective particle diameter for ice clouds. Name: GLW Skin Temperature Units: Kelvin Type: real Range: 175-375 Fill Values: -999.00 Scale Factor: None Name: GEOS-4 Skin Temperature Units: Kelvin Type: real Range: 175-375 Fill Values: -999.00 Scale Factor: None Name: ISCCP Skin Temperature Units: Kelvin Type: real Range: 175-375 Fill Values: -999.00 Scale Factor: None Name: Precipitable Water (pw) Units: grams per square centimeter Type: real Range: 0-10 Fill Values: -999.00 Scale Factor: None Name: Snow/Ice Percentage Units: % Type: real Range: 0.0 - 100.0 Fill Values: -999.0 Scale Factor: None Name: Day/Night flag (Day=1, Night=0) Units: none Type: real Range: 0.0 or 1.0 Fill Values: n/a Scale Factor: None Name: Total Cloud Fraction Units: none Type: real Range: 0.0-1.0 Fill Values: -999. Scale Factor: None Name. Total Cloud Top Pressure Units: hectopascals Type: real Range: 1000-100 Fill Values: -999.0 Scale Factor: None Name: Total Cloud Top Temperature Units: Kelvin Type: real Range: 150-350 Fill Values: -999.0 Scale Factor: None Name: Total Cloud Visible Optical Depth Units: none Type: real Range: 0-200 Fill Values: -999.0 Scale Factor: None Name. Surface Pressure Units: hectopascals Type: real Range: 1000-450 Fill Values: -999.0 Scale Factor: None Name: Cloud Fraction (5 fields) Units: none Type: real Range: 0.0-1.0 Fill Values: -999.0 Scale Factor: None Name: Cloud Visible Optical Depth (5 fields) Units: none Type: real Range: 0-200 Fill Values: -999.0 Scale Factor: None Name: Cloud particle size (5 fields) Units: micrometer Type: real Range: 0-100 Fill Values: -999.0 Scale Factor: None Name: Cloud Top Temperature (5 fields) Units: Kelvin Type: real Range: 150-350 Fill Values: -999.0 Scale Factor: None Name. Cloud Top Pressure (5 fields) Units: hectopascals Type: real Range: 1000-100 Fill Values: -999.0 Scale Factor: None Name. Cloud Base Pressure (5 fields) Units: hectopascals Type: real Range: 1000-100 Fill Values: -999.0 Scale Factor: None Name. Cloud Water or Ice Content (5 fields) Units: grams per cubic meter Type: real Range: 0-10 Fill Values: -999.0 Scale Factor: None 5. Read Software Description Sample read software written in Fortran-90, read_longwave_cloudprops_3hrly.f90, was developed for reading these data. This software constitutes the name of the input data file, accesses and reads it, using the information provided in the namelist file (longwave_cloudprops_3hrly.nml). The input files are read as direct-access fortran binary on the nested (44016 box) grid. The software reads one or more of the parameter fields, regrids them to an equal-angle 1 deg x 1 deg grid, and writes them output as ascii or binary format. The choice of file format (ascii or binary) and of the location of the output files is also made through the namelist file. A sample namelist file that would be used to read the Jan 24, 1991 data file and write all parameters to an ascii format output file is presented below. Note that only 19 of the 47 parameters are written to the output. Only one cloud type (#5; low water cloud) is chosen for all cloud parameters. This choice are made by using "cld=5" in the namelist file. &time_vars year=1991 month=7 day=24 ascii=.true. binary=.false. path_in='**** input file path here****' path_out='**** output file path here****' little_endian=.false. glw_skint=.true. geos_skint=.true. isccp_skint=.true. prec_water=.true. snow=.true. daynite=.true. tot_cld_frac=.true. tot_cld_pres=.true. tot_cld_temp=.true. tot_cld_tau=.true. sfc_pres=.true. tot_column_o3=.true. cld=5 cld_frac=.true. cld_tau=.true. cre=.true. cld_top_temp=.true. cld_top_pres=.true. cld_base_pres=.true. cld_water_cnt=.true. / There is a choice to convert the input fields from big endian to little endian byte order with the logical variable "little_endian" in the namelist. This applies to operating systems where byte order is stored opposite that of the machines used to create the data set, such as Linux and Macs with the Intel chip. If possible, a better choice for doing the conversion in these cases would be to use a compiler option. If using a compiler option, do not set little_endian to true. Both input and output fields have the same orientation: they start at the Greenwich meridian-south pole and go east and north from there. A limitation of this code is that it provides a complete global field of the specified parameters in the above orientation. The user should be easily able to extract values for any box or lat-lon region from these fields. 6.0 Implementing the Sample Read Software The sample read software can be compiled with any Fortran 90 or 95 compiler. To compile: % f90 -o run_cldprops_3hrly read_longwave_cloudprops_3hrly.f90 The providers used a gfortran compiler but any F90/F95 compiler should work. Edit the namelist file to select month and year to be processed, choose the parameters to be read and the format of the output file. Run the software: % run_cldprops_3hrly 7.0 Sample Output The 19 tables of numbers below show the values of the 19 parameters selected above from these files for latitude bands 45-51 (starting at the south pole) and longitude boxes 100-104 (starting at the Greenwich meridian) for hour 06 of day 24 of the month. Values for only a small lat-lon box for a single time are printed to the screen. When the is code run, the following information appears on the screen: ***************************************************************** * * * * * Data Set srb_rel3.0_longwave_cldprops_3hrly Read Software * * * * Version: 1.0 * * * * Contact: Atmospheric Science Data Center * * User and Data Services Office * * Mail Stop 157D * * NASA Langley Research Center * * Hampton, Virginia 23681-2199 * * U.S.A. * * * * E-mail: support-asdc@earthdata.nasa.gov * * Phone: (757)864-8656 * * FAX: (757)864-8807 * * * ***************************************************************** Variable glw_skint_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 282.487 282.806 282.806 282.742 282.742 lat band # 46 283.704 283.844 283.866 283.814 283.626 lat band # 47 284.656 284.749 284.753 284.698 284.499 lat band # 48 285.435 285.488 285.484 285.445 285.300 lat band # 49 286.144 286.179 286.175 286.158 286.088 lat band # 50 286.874 286.914 286.915 286.914 286.876 lat band # 51 287.657 287.712 287.716 287.713 287.650 file glw_skint_3hrly_19910124.ascii has been written Variable geos_skint_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 282.487 282.806 282.806 282.742 282.742 lat band # 46 283.704 283.844 283.866 283.814 283.626 lat band # 47 284.656 284.749 284.753 284.698 284.499 lat band # 48 285.435 285.488 285.484 285.445 285.300 lat band # 49 286.144 286.179 286.175 286.158 286.088 lat band # 50 286.874 286.914 286.915 286.914 286.876 lat band # 51 287.657 287.712 287.716 287.713 287.650 file geos_skint_3hrly_19910124.ascii has been written Variable isccp_skint_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 278.227 280.658 280.658 280.658 280.658 lat band # 46 279.553 279.553 -999.000 282.818 282.818 lat band # 47 280.909 281.487 284.375 281.713 281.763 lat band # 48 283.371 283.047 282.467 281.897 283.597 lat band # 49 283.873 282.567 283.069 283.957 282.607 lat band # 50 284.250 284.375 284.250 283.706 282.818 lat band # 51 284.878 285.380 285.300 284.124 286.000 file isccp_skint_3hrly_19910124.ascii has been written Variable prec_water_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 1.933 1.885 1.885 2.047 2.047 lat band # 46 1.791 1.806 1.871 1.954 2.017 lat band # 47 1.724 1.775 1.848 1.896 1.938 lat band # 48 1.724 1.772 1.799 1.811 1.837 lat band # 49 1.713 1.699 1.684 1.699 1.748 lat band # 50 1.701 1.642 1.620 1.653 1.716 lat band # 51 1.680 1.629 1.613 1.631 1.664 file prec_water_3hrly_19910124.ascii has been written Variable snow_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 0.000 0.000 0.000 0.000 lat band # 46 0.000 0.000 0.000 0.000 0.000 lat band # 47 0.000 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 0.000 0.000 0.000 lat band # 50 0.000 0.000 0.000 0.000 0.000 lat band # 51 0.000 0.000 0.000 0.000 0.000 file snow_3hrly_19910124.ascii has been written Variable daynite_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 1.000 1.000 1.000 1.000 1.000 lat band # 46 1.000 1.000 1.000 1.000 1.000 lat band # 47 1.000 1.000 1.000 1.000 1.000 lat band # 48 1.000 1.000 1.000 1.000 1.000 lat band # 49 1.000 1.000 1.000 1.000 1.000 lat band # 50 1.000 1.000 1.000 1.000 1.000 lat band # 51 1.000 1.000 1.000 1.000 1.000 file daynite_3hrly_19910124.ascii has been written Variable tot_cld_frac_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 1.000 0.999 0.999 1.000 1.000 lat band # 46 1.000 1.000 1.000 1.000 1.000 lat band # 47 1.000 1.000 1.000 0.500 0.750 lat band # 48 0.750 1.000 1.000 0.400 0.200 lat band # 49 0.750 0.333 0.500 1.000 0.000 lat band # 50 0.000 0.000 0.000 0.250 0.333 lat band # 51 0.000 0.000 0.000 0.200 0.000 file tot_cld_frac_3hrly_19910124.ascii has been written Variable tot_cld_pres_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 431.429 560.000 560.000 460.000 460.000 lat band # 46 429.000 598.333 545.000 626.667 473.333 lat band # 47 647.500 515.000 440.000 402.500 505.000 lat band # 48 443.333 440.000 517.500 590.000 660.000 lat band # 49 591.667 475.000 660.000 696.667 -999.000 lat band # 50 -999.000 -999.000 -999.000 730.000 765.000 lat band # 51 -999.000 -999.000 -999.000 740.000 -999.000 file tot_cld_pres_3hrly_19910124.ascii has been written Variable tot_cld_temp_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 248.571 260.150 260.150 250.500 250.500 lat band # 46 247.580 267.133 258.950 269.467 255.733 lat band # 47 270.700 258.300 251.475 246.400 258.733 lat band # 48 250.833 250.133 260.550 268.450 272.100 lat band # 49 269.433 257.500 272.400 276.433 -999.000 lat band # 50 -999.000 -999.000 -999.000 278.900 280.500 lat band # 51 -999.000 -999.000 -999.000 280.000 -999.000 file tot_cld_temp_3hrly_19910124.ascii has been written Variable tot_cld_tau_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 5.864 3.153 3.153 2.524 2.524 lat band # 46 2.490 4.100 4.240 6.147 3.153 lat band # 47 2.395 2.204 1.533 1.520 2.450 lat band # 48 1.420 1.270 0.860 0.790 0.460 lat band # 49 0.627 1.180 1.220 2.983 0.000 lat band # 50 0.000 0.000 0.000 5.880 1.730 lat band # 51 0.000 0.000 0.000 2.690 0.000 file tot_cld_tau_3hrly_19910124.ascii has been written Variable sfc_pres_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 1006.470 1007.912 1007.912 1009.767 1009.767 lat band # 46 1008.476 1009.143 1009.914 1010.803 1011.795 lat band # 47 1010.009 1010.648 1011.378 1012.214 1013.144 lat band # 48 1011.508 1012.092 1012.739 1013.456 1014.254 lat band # 49 1012.928 1013.446 1014.045 1014.660 1015.289 lat band # 50 1014.149 1014.621 1015.171 1015.749 1016.257 lat band # 51 1015.211 1015.625 1016.109 1016.668 1017.121 file sfc_pres_3hrly_19910124.ascii has been written Variable tot_column_o3_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 278.000 278.250 278.250 285.875 285.875 lat band # 46 270.000 273.000 276.750 278.500 279.750 lat band # 47 268.000 275.000 276.500 277.000 277.500 lat band # 48 269.000 277.000 277.000 276.500 275.750 lat band # 49 276.000 276.000 273.750 273.000 273.750 lat band # 50 272.000 273.000 274.500 273.000 271.750 lat band # 51 274.000 272.000 272.750 273.500 273.750 file tot_column_o3_3hrly_19910124.ascii has been written Variable cld_frac_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 0.167 0.167 0.000 0.000 lat band # 46 0.200 0.000 0.500 0.000 0.000 lat band # 47 0.500 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 0.250 0.667 0.000 lat band # 50 0.000 0.000 0.000 0.250 0.333 lat band # 51 0.000 0.000 0.000 0.200 0.000 file cld_frac_low_wat_3hrly_19910124.ascii has been written Variable cld_tau_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 4.480 4.480 0.000 0.000 lat band # 46 4.296 0.000 6.384 0.000 0.000 lat band # 47 0.680 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 1.520 5.940 0.000 lat band # 50 0.000 0.000 0.000 5.880 1.730 lat band # 51 0.000 0.000 0.000 2.690 0.000 file cld_tau_low_wat_3hrly_19910124.ascii has been written Variable cre_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 9.840 9.840 0.000 0.000 lat band # 46 9.840 0.000 9.840 0.000 0.000 lat band # 47 9.840 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 9.840 9.840 0.000 lat band # 50 0.000 0.000 0.000 9.840 9.840 lat band # 51 0.000 0.000 0.000 9.840 0.000 file cre_low_wat_3hrly_19910124.ascii has been written Variable cld_top_temp_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 276.733 276.733 0.000 0.000 lat band # 46 273.491 0.000 273.452 0.000 0.000 lat band # 47 276.427 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 282.026 278.479 0.000 lat band # 50 0.000 0.000 0.000 278.900 280.500 lat band # 51 0.000 0.000 0.000 280.000 0.000 file cld_top_temp_low_wat_3hrly_19910124.ascii has been written Variable cld_top_pres_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 717.814 717.814 0.000 0.000 lat band # 46 680.000 0.000 680.000 0.000 0.000 lat band # 47 682.588 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 780.307 725.112 0.000 lat band # 50 0.000 0.000 0.000 732.371 782.117 lat band # 51 0.000 0.000 0.000 751.427 0.000 file cld_top_pres_low_wat_3hrly_19910124.ascii has been written Variable cld_base_pres_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 767.814 767.814 0.000 0.000 lat band # 46 730.000 0.000 730.000 0.000 0.000 lat band # 47 732.588 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 830.307 775.112 0.000 lat band # 50 0.000 0.000 0.000 782.371 832.117 lat band # 51 0.000 0.000 0.000 801.427 0.000 file cld_base_pres_low_wat_3hrly_19910124.ascii has been written Variable cld_water_cnt_ Hour = 06 Day = 24 lon # = 100 101 102 103 104 lat band # 45 0.000 0.052 0.052 0.000 0.000 lat band # 46 0.047 0.000 0.071 0.000 0.000 lat band # 47 0.008 0.000 0.000 0.000 0.000 lat band # 48 0.000 0.000 0.000 0.000 0.000 lat band # 49 0.000 0.000 0.019 0.069 0.000 lat band # 50 0.000 0.000 0.000 0.069 0.022 lat band # 51 0.000 0.000 0.000 0.032 0.000 file cld_water_cnt_low_wat_3hrly_19910124.ascii has been written References: Bloom, Stephen, A. daSilva. D. Dee, M. Bosilovich, J-D. Chern, S. Pawson, S. Schubert, M. Sienkiewicz, I. Stajner, W-W. Tan, and M-L Wu, 2005: Documentation and Validation of the Goddard Earth Observing System (GEOS) Data Assimilation System, Version 4, NASA Technical Report,Report Number: NASA/TM-2005104606/ VOL26/VER4, Rept- 2005-01264-0/VOL26/VER4 Fu, Qiang, K. N. Liou, M. C. Cribb, T. P. Charlock, and A. Grossman, 1997: Multiple Scattering Parameterization in Thermal Infrared Radiative Transfer. J. Atmos. Sci. , Vol. 54, 2799-2812, doi: 10.1175/1520-0469(1997)054<2799:MSPITI>2.0.CO;2 Rossow, William B. and R. A. Schiffer, 1999: Advances in Understanding Clouds from ISCCP. BAMS, Vol. 80, 2261-2287, doi: 10.1175/1520-0477(1999)080<2261:AIUCFI>2.0.CO;2. Wilber, Anne C., Kratz, D. P., Gupta, S. K., 1999: Surface Emissivity Maps for Use in Satellite Retrievals of Longwave Radiation, NASA Technical Report, Report Number: L-17861, NAS 1.60:209362, NASA/TP-1999-209362.