User Guide

DAP Requests

What is DAP ?

The Data Access Protocol.

http://opendap.org/

http://opendap.org/faq/whatIsDods.html

Examples

URL : http://ctoh.legos.obs-mip.fr/ctoh.nc?time,lon,lat,lambda&ctoh_mission=filaments&lon>40&lon<50&lat>-10&lat<5 (DAP Example 1)

Databases available at CTOH

CTOH databases

The following ctoh_mission are defined:

• jason2
• filaments
• gfo
• envisat

CTOH Parameters reference

CTOH distributes original gdr, together with home-brewed parameters.

Warning

This section should be generated out of formal (XML) definitions of databases

Globals

These parameters are defined as global variable :

ctoh_mission

Database to consider. See Databases available at CTOH.

ctoh_dataset

Original dataset file name.

ctoh_cycle_number

Dataset cycle number.

ctoh_pass_number

Dataset pass number, a.k.a. trace number.

ctoh_dataset_size

Original dataset file size.

ctoh_dataset_ctime

Original dataset file create date.

Envisat

Envisat specific global variables

Envisat specific variables

uso_range_corr

USO range correction.

time_hf

High Frequency time scale.

GFO

GFO specific global variables

GFO specific variables

time_hf

High Frequency time scale.

Jason2

Jason2 specific global variables

Jason2 specific variables

time_hf

High Frequency time scale, formerly known as time_20hz.

Jason1c

Jason1c specific global variables

Jason1c specific variables