DATA

GSIP data can be accessed at the following sites:
 
  NOAA/NESDIS site


The instantaneous GSIP data can be downloaded from the directory /pub/gsip at the NOAA/NESDIS ftp site at 140.90.195.61. Access to this ftp site can be obtained by sending a request to the NOAA/NESDIS Office of Satellite Data Processing and Distribution (OSDPD) Satellite Services Division (SSD). Contact: Richard Garey, E/SP22, Room 607, WWBG, 5200 Auth Road, Camp Springs, MD 20746-430, voice: 301‑763‑8142, x130, fax: 301‑899‑9196, e-mail: Richard.Garey@noaa.gov. Dowload the request form (MS Word document) from here.

There are two types of files in the directory /pub/gsip:

  • data for a particular observation time, HRyydddhh.Z and
  • data for a day, Dyyddd.Z. This file contains all HR* files for a day.
    •
yy: two-digit year (e.g.: 2005 is 05)
ddd: day of year (range: 1-365/366)
hh: nominal hour of satellite observation (UTC)

The UNIX compressed files contain little-endian binary data. For every observation time 71 parameters are reported. A complete list of these parameters along with an example Fortran code for reading the files is found here.

The HR* and D* files are kept at this site for the last 5-6 days.
 
  GCIP/GAPP site at the Department of Meteorology, UMD, College Park


Instantaneous, hourly, daily, and monthly averages of selected parameters:

  • surface downward shortwave radiation,
  • surface downward photosynthetically active radiation (PAR),
  • top of atmosphere downward shortwave radiation,
  • top of atmosphere upward shortwave radiation,
  • cloud cover fraction, and
  • surface skin temperature

can be downloaded from the GCIP/GAPP website at the Department of Meteorology, University of Maryland at College Park.