Lists of "stations" or sites for various periods are in
(Last checked: 9 Feb 2006) staids.2005090100-present staids.2004021800-2005083112 staids.2003020700-xxxxxxxxxx staids.2001112712-xxxxxxxxxx staids.2001070212-2001112700 staids.2000112112-2001070200 staids.2000032912-2000112100 staidsal.99052700-xxxxxxxx staidsen.99052700-xxxxxxxx staidsal.99033112-99052612 staidsen.99033112-99052612 staidsal.98060312-99033100 staidsen.98060312-99033100 staidsal.98020912-98060300 staidsen.98020912-98060300 staidsal.97072912-98020900 staidsen.97072912-98020900 staidsal.97021812-97072900 staidsen.97021812-97072900 staidsal.97011412-97021800 staidsen.97011412-97021800 staidsal.96050912-97011400 staidsen.96050912-97011400 staidsal.96022912-96050900 staidsen.96022912-96050900 staidsal.95110112-96022900 staidsen.95110112-96022900 staidsal.94071600-95110100 staidsen.94071600-95110100Staidsal.* files contain all the stations, while staidsen.* files contain only the stations with "enhanced" output (see explanation for column 5 below). Explanation for column entries in staids:
1. Five-digit station ID 2. Station latitude 3. Station longitude 4. 3-character station ID 5. For run cycles of 12Z 18 Feb 1997 and after, column 5 has 2 digits. Before that cycle, column 5 has only a single digit. For 12Z 18 Feb 1997 and after, the first digit denotes how the grid point for the station is chosen (the output for a given station is from a grid point near the station): 1 -- output is from the nearest land point 2 -- output is from the nearest sea point 0 (or a blank space) -- output is from the nearest neighboring point, regardless of surface type The second digit in column 5 (before 12Z 18 Feb 1997, the 1-digit number in column 5), is the class of stations (0, 1 or 2). There are two types of hourly output. The "basic" output, in class0.bufr.tm**, and the "enhanced" output, in class1.bufr.tm**, which includes a larger number of surface and upperair parameters than the "basic" output. Class 0 stations only produce "basic" output (in class0.bufr.tm**). Class 1 stations only produce "enhanced" output (in class1.bufr.tm**). Class 2 stations produce both "basic" and "enhanced" output, i.e. output for class 2 stations can be found in both class0.bufr.tm** and class1.bufr.tm**. 6. Station name 7. Station height (m) 8. CommentsThe number of surface and upper air parameters for various periods are as follows:
class0 class1 sfc UA sfc UA 12Z 09 Feb 98 - Present 26 6 56 13 12Z 18 Feb 97 - 00Z 09 Feb 98 26 6 52 13 00Z 01 Apr 95 - 00Z 18 Feb 97 21 6 40 12 00Z 16 Jul 94 - 12Z 31 Aug 94 21 6 31 12See online inventory files for lists of output parameters:
molts0.98060312-present molts1.98060312-present molts0.98020912-98060300 molts1.98020912-98060300 molts0.97021812-98020900 molts1.97021812-98020900 molts0.96013112-97021800 molts1.96013112-97021800 molts0.94071600-96013100 molts1.95040100-96013100 molts1.94071600-94083112While both class0.bufr.tm** and class1.bufr.tm** files are produced by the model (and available on NIC for the two latest production cycles), only the class1.bufr.tm** files are saved on tapes sent to the permanent archive at NCAR. Stations in the archived files are listed in staidsen.*.
The Eta output files contain profiles at t0, t0+1hr, t0+2hr, ... t0+48hr (t0 is the starting time of the free forecast). Each EDAS output file contains four hourly profiles, for example, class1.bufr.tm09 contains output at t0-9hr, t0-8hr, t0-7hr, and t0-6hr. Let's call these four outputs hour0, hour1, hour2 and hour3. In each case, you should not use the hour0 output for the surface parameters that are values accumulated over a period of time (for example, surface fluxes, maximum temperature over an hour), since hour0 is outputted after integration over just one time step, and the values are not true accumulations. However parameters that are instantaneous values (for example, skin temperature) are still good at hour0. A list of surface parameters that are computed cumulatively (and ill-defined at hour0) is listed here.
Since 12Z 3 Nov 1998, the parameters that are cumulative or averaged are given a value of -9999 at hour0.
To unpack the BUFR data, see BUFR README file.