How to download HYCOM - Revision history

Yjzhang at 12:54, 13 April 2023

2023-04-13T12:54:15Z

Yjzhang at 16:02, 20 May 2022

2022-05-20T16:02:37Z

Schismguest at 20:25, 9 August 2018

2018-08-09T20:25:28Z

Yjzhang at 01:45, 24 July 2018

2018-07-24T01:45:35Z

Schismguest at 01:34, 24 July 2018

2018-07-24T01:34:03Z

Yjzhang at 13:17, 16 July 2018

2018-07-16T13:17:40Z

Yjzhang at 13:15, 16 July 2018

2018-07-16T13:15:23Z

Yjzhang at 13:07, 16 July 2018

2018-07-16T13:07:00Z

Yjzhang at 02:24, 14 July 2018

2018-07-14T02:24:25Z

Yjzhang at 02:13, 14 July 2018

2018-07-14T02:13:43Z

← Older revision		Revision as of 12:54, 13 April 2023
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		+	Please note that PYSCHISM can now download HYCOM and ERA5 etc easily.
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		+
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	==From Dr. Wenfan Wu (May 2022) ==		==From Dr. Wenfan Wu (May 2022) ==

← Older revision		Revision as of 16:02, 20 May 2022
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−	From Dr. Dan Yu (July 2018):	+	==From Dr. Wenfan Wu (May 2022) ==
		+
		+	A [https://github.com/wenfanwu/get_hycom_online MATLAB function] for downloading the HYCOM data.
		+
		+	This function enables you to obtain the HYCOM data of a specified region and time moment since 1992. I hope it could help you.
		+
		+
		+
		+
		+	==From Dr. Dan Yu (July 2018)==

	This HYCOM download tool uses “ferret” as interface.<br>		This HYCOM download tool uses “ferret” as interface.<br>

@@ Line 4: / Line 4: @@
 Please visit  [https://ferret.pmel.noaa.gov/Ferret ferret web site] to see details of the software. Also you'll need nco tool.<br>
 Version 7.1 of ferret/pyferret or higher are tested. <br>
-You can download our tool [http://ccrm.vims.edu/yinglong/wiki_files/hycom_dl.tgz here].
+conda create -n FERRET -c conda-forge pyferret --yes <br>
 Once you download and untar, there’re 2 directories (9x.x_exp & 19.x_exp) that correspond to 2 different HYCOM experiment datasets; check HYCOM web site for further details about the description of the datasets.
@@ Line 12: / Line 16: @@
 For example:
 *exp="91.1"    HYCOM experiment
-*lon_s="120E"  start longitude
+*lon_s="120"  start longitude (-180 ~ 180) <br>
-*lon_e="125E"  end longitude
+*lon_e="125"  end longitude (-180 ~ 180) <br>
-*lat_s="20N"   start latitude
+*lat_s="20"   start latitude (-90 ~ 90) <br>
-*lat_e="25N"   end latitude
+*lat_e="25"   end latitude   (-90 ~ 90) <br>
 For 19.x_exp, 1 extra var “yr” has to be defined.
@@ Line 34: / Line 38: @@
 and then type: dlHYCOM.sh again! <br>
-The download script is designed to get all variables into 3 files (EL_*.nc, ST_*.nc, UV_*.nc) for SCHISM. <br>
+The download script is designed to get all variables into 3 files (SSH_*.nc, ST_*.nc, UV_*.nc) for SCHISM. <br>
 Once you gather all you need, simply use nco command to cat your ncfiles. <br>
-For example: ncrcat EL_*.nc EL_final.nc <br>
+For example: ncrcat SSH_*.nc SSH_final.nc <br>
 Then you can use "gen_hot_3Dth_from_hycom.f90" to generate your initial & open boundary conditions for SCHISM.<br>

@@ Line 3: / Line 3: @@
 This HYCOM download tool uses “ferret” as interface.<br>
 Please visit  [https://ferret.pmel.noaa.gov/Ferret ferret web site] to see details of the software. Also you'll need nco tool.<br>
-Version 7.1 of ferret/pyferret or higher are recommended to use. <br>
+Version 7.1 of ferret/pyferret or higher are tested. <br>
 You can download our tool [http://ccrm.vims.edu/yinglong/wiki_files/hycom_dl.tgz here].
@@ Line 41: / Line 41: @@
 Instead of downloading the whole records, the script is designed to download each record at a time to avoid too many requests to HYCOM server.<br>
 Also using OPeNDAP protocol to only request the region you need.<br>
-HYCOM server will reject too large request!<br>
+HYCOM server will reject too large a request!<br>
-Both minimize the load of HYCOM server, and makes download with long record become possible.<br>
+Both minimize the load of HYCOM server, and makes downloading long record possible.<br>
 The only drawback is you will need extra disk storage to concatenate all netcdf files.<br>
 Enjoy!

@@ Line 1: / Line 1: @@
 From Dr. Dan Yu (July 2018):
-This HYCOM download tool uses “ferret” as interface.
+This HYCOM download tool uses “ferret” as interface.<br>
-Please visit  [https://ferret.pmel.noaa.gov/Ferret ferret web site] to see details of the software. Also you'll need nco tool.
+Please visit  [https://ferret.pmel.noaa.gov/Ferret ferret web site] to see details of the software. Also you'll need nco tool.<br>
 You can download our tool [http://ccrm.vims.edu/yinglong/wiki_files/hycom_dl.tgz here].
@@ Line 36: / Line 37: @@
 Once you gather all you need, simply use nco command to cat your ncfiles. <br>
 For example: ncrcat EL_*.nc EL_final.nc <br>
-Then you can use "gen_hot_3Dth_from_hycom.f90" to generate your initial & open boundary conditions for SCHISM.
+Then you can use "gen_hot_3Dth_from_hycom.f90" to generate your initial & open boundary conditions for SCHISM.<br>
 Enjoy!

@@ Line 30: / Line 30: @@
 If any error occurs, such as TMAP error or disconnection, <br>
 please check ncfile (including size) in output directory first, <br>
-and '''DELETE''' the line which already successfully download in listHYCOM.jnl, <br>
+and '''DELETE''' the lines in listHYCOM.jnl corresponding to those that have already been successfully downloaded, <br>
 and then type: dlHYCOM.sh again! <br>

@@ Line 8: / Line 8: @@
 Once you download and untar, there’re 2 directories (9x.x_exp & 19.x_exp) that correspond to 2 different HYCOM experiment datasets; check HYCOM web site for further details about the description of the datasets.
-Main script is listdate.sh in each dir, edit options as you needed.
+Main script is listdate.sh in each dir, edit options as you need.
 For example:
 *exp="91.1"    HYCOM experiment
@@ Line 19: / Line 19: @@
 *yr="2012"
-There’re 3 optional vars you can add, if you have large domain (and want to subsample) or encounter memory problem with ferret.
+There’re 3 optional vars you can specify, if you have large domain (and want to subsample) or encounter memory problem with ferret.
-*lon_i : longitude interval, default is 0.08, use larger if needed
+*lon_i: longitudinal interval, default is 0.08, use larger if needed
-*lat_i : latitude interval , default is 0.08, use larger if needed
+*lat_i: latitudinal interval , default is 0.08, use larger if needed
-*mem : ferret memory cache, default is 300 (MegaWords), use larger if needed
+*mem: ferret memory cache, default is 300 (MegaWords), use larger if needed
 Once you finish, execute listdate.sh, and it will generate listHYCOM.jnl for whole record list of experiment. <br>
@@ Line 28: / Line 28: @@
 Then execute dlHYCOM.sh, and all your nc files will be in “output/”.
-If any bad situation happened, such as TMAP error or disconnection, <br>
+If any error occurs, such as TMAP error or disconnection, <br>
 please check ncfile (including size) in output directory first, <br>
-and '''DO DELETE''' the line which already successfully download in listHYCOM.jnl! <br>
+and '''DELETE''' the line which already successfully download in listHYCOM.jnl, <br>
-Then type: dlHYCOM.sh again! <br>
+and then type: dlHYCOM.sh again! <br>
 The download script is designed to get all variables into 3 files (EL_*.nc, ST_*.nc, UV_*.nc) for SCHISM. <br>

@@ Line 1: / Line 1: @@
 From Dr. Dan Yu (July 2018):
-This HYCOM download tool is using “ferret” as interface.
+This HYCOM download tool uses “ferret” as interface.
-Please visit  [https://ferret.pmel.noaa.gov/Ferret ferret web site] to see details.
+Please visit  [https://ferret.pmel.noaa.gov/Ferret ferret web site] to see details of the software.
-You can download this tool [http://ccrm.vims.edu/yinglong/wiki_files/hycom_dl.tgz here].
+You can download our tool [http://ccrm.vims.edu/yinglong/wiki_files/hycom_dl.tgz here].
-Once you download and untar, there’re 2 directories (9x.x_exp & 19.x_exp) represent different HYCOM experiment data, check HYCOM web site for further details.
+Once you download and untar, there’re 2 directories (9x.x_exp & 19.x_exp) that represent different HYCOM experiment data; check HYCOM web site for further details about the description of the datasets.
 Main script is listdate.sh, edit options as you needed.