Sea Surface Temperature - Pathfinder CDR Data Flow Diagram

ACISEG Module - Scan L1B file to determine how best to break

orbit file into smaller segments/granules

ACI Module - Unpack and ingest L1b file. Split the file into ~ 6

granules and determine pixel geo-location and viewing geometry

L2gen_both Module - Level 1 to Level 2 generation. Apply

calibration and convert counts to radiance, calculate SST and pixel

quality

L2bin_both Module

Spatial bin swath data into equal area 4km grid

Next steps repeated at ¼ deg for quick look QC up to final HDF

L3bin Module - STEP 1. space binned L2 swaths re-combined back

to single orbit files for the data-day eg. 14-16 space binned orbits

SMIgen_both Module - Generate Standard Map Image

observations convert equal area to equal angle map.

L3bin Module - script: avhprc-orb list of orbits to bin

STEP2. Bin pixels into data-day for daytime or night. Assemble data

day by combining different orbits from today, additional pieces from

previous and next days’ orbits. See CATB definition of data-day

Script: avprc-orb controls

ingest-> L2Bin

L1b Class files to process

command lines for

aciseg, aci, L2gen, L2bin,

L3bin->orbit

Script: avhprc-dday controls

L3 binning and mapping

provides L3bin and SMIgen

command line arguments

and list of L2 files to time

bin into orbits and then into

data-days and list of L3 files

to map

CLASS L1B orbit files

e.g.

NSS.GHRR.NN.

D10291.S0032.E02

17.B2787677.GC

Ephemeris and Clock

correction LUT

Save to disk for NCEI

post processing

Mapped file: 3 maps

per L3 bin file 1

parameter per file

YYYYDDD.

i<res><day/night>-

pf<ver>ap-<SAT>-

<par>.hdf

Save to disk for NCEI

post processing

L2 file:

YYYYDDDhhmmss.

<SAT>.L2_GAC.hdf

~6 files per orbit 14 to

16 orbits per data day

Start /end scan line for a segment

Filename: <YYYYDDDhhmmss>.inp

~6 output files per Class L1b orbit file

Segmented CLASS L1B: ~96 segments

per data-day ~6 segments per Class file

with 2 files per segment data files:

YYYDDDhhmmss.L1B.hdf

Geo files: YYYYDDDhhmmss.geo.hd

L2 file: YYYYDDDhhmmss.<SAT>.

L2_GAC.hdf

~6 files per orbit 14 to 16 orbits per data

day

L3 file from binned 4-km L2 file:

YYYYDDD.b<res><day/night>-

pf<ver>ap-<SAT>-sst.hdf

Temporary bin orbit files

~16 day or night orbits files per data day

YYYYDDDhhmmss.b<res>o<day/night>

-pf<ver>ap-<SAT>.hdf

L3 binned file 1 file per day or night data

day

YYYYDDD.b<res><day/night>-

pf<ver>ap.<SAT>-sst.hdf

Mapped file: 3 maps per L3 bin file 1

parameter per file

YYYYDDD.i<res><day/night>-pf<ver>ap-

<SAT>-<par>.hdf

Algorithm

coefficients

for SST

Non-linear

calibration

Reference field

DOISST v2

avhrr-only-v2pfv52.

YYYYMMDD.nc

NCEP reanalysis

vwind.YYYY.nc

uwind.YYYY.nc

Keep Mapped QC

HDF file at ¼ deg

<res>=qd

hdf2nc_PFV53_L3C Module - NCEI post processing for converting L3

HDF to GHRSST L3C netCDF.

NetCDF file <date><time><RDAC><processing level>

_GHSST-<SST Type>-<character string>-<additional

segregator>-v<GDS Version>-fv<File Versions>.<file

type>

e. g. 19811230160746-NCEI-L3C_GHRSST-SSTskin-

AVHRR_Pathfinder-PFV5.3_NOAA07_G_1981364_day-v02.0-

fv01.0.nc

Aerosol:

aerosol_optical_thickness.aer

o100.interp.YYYYwWW.dat or

aerosol_optical_thickness.

avhrrpf.inter p.YYYYMM.dat

where YYYY=year, WW=week,

MM=month, DD=date

Ice:

ice_conc_polstere-

100_reproc_YYYYMMDD

HHmm.nc Or

YYYYMMDD-NCDC-

L4LRblendGLOB-v01-

fv02_0-AVHRR_OI.

ncYYY.nc

Wind:

uwnd.10m.gauss.YYYY.nc

and vwnd.10m.gauss.

YYYY.nc.

hdf2nc_PFV53_L3U Module - NCEI post processing for converting

L2P HDF to GHRSST L3U netCDF.

NetCDF file <date><time><RDAC><processing level>

_GHSST-<SST Type>-<character string>-<additional

segregator>-v<GDS Version>-fv<File Versions>.<file

type>

e. g. 19811112232240-NCEI-L3U_GHRSST-SSTskin-

AVHRR_Pathfinder-PFV5.3_NOAA07_G_day-v02.0-fv01.0.

hdf2nc_PFV53_L2P Module - NCEI post processing for converting

L2P HDF to GHRSST L2P netCDF.

NetCDF file <date><time><RDAC><processing level>

_GHSST-<SST Type>-<character string>-<additional

segregator>-v<GDS Version>-fv<File Versions>.<file

type>

e. g. 19811121231858-NCEI-L2P_GHRSST-SSTskin-

AVHRR_Pathfinder-PFV5.3_NOAA07_G-

SST_s2318_e0009-v02.0-fv01.0.nc

NCEI Pathfinder

SST GHRSST

standardization

post processing

Save to disk for NCEI archiving

e.g.

L3C:19811230160746-NCEI-L3C_GHRSST-

SSTskin-AVHRR_Pathfinder-PFV5.

3_NOAA07_G_1981364_day-v02.0-fv01.0.

L3:19811112232240-NCEI-L3U_GHRSST-

SSTskin-AVHRR_Pathfinder-PFV5.

3_NOAA07_G_day-v02.0-fv01.0.nc

L2P:19811121231858-NCEI-L2P_GHRSST-

SSTskin-AVHRR_Pathfinder-PFV5.

3_NOAA07_G-SST_s2318_e0009-v02.0-

fv01.0.nc

Final input/output files

Process modules

Description / example

Look-up tables

Functional /control

scripts

Intermediate files

Ancillary files

Legend

Sea Surface Temperature - Pathfinder CDR

Data Flow Diagram

CDRP-DIA-0277

Rev 2 6/23/2016