%               FILE DESCRIBING THE NSCAT 25 km LEVEL 2.0 DATASET / ACCESS

% $Id: nscat20.m,v 1.14 1998/11/09 20:26:56 dbyrne Exp $

% FUNCTIONS -- REQUIRED
GetFunctionName = 'getnscat20';
% FUNCTIONS -- OPTIONAL

% VARIABLES -- OPTIONAL
% NB: You must edit the time information in getnscat20.m to match the start
% and stop dates given here. See the comment about `TIME-BASED FILE
% SELECTION'. jhrg 10/21/97

% 1997 @ JPL (55km data)
% Server = 'http://podaac.jpl.nasa.gov/dods-bin/nph-hdf/dods/nscat/L20/';
% Time = [1997+37/365 1997+77/365];

% 1997 @ URI (55km data)
% Server = 'http://rhody.gso.uri.edu/cgi-bin/nph-hdf/data/nscat/L20/';
% Time = [1997+155/365 1997+169/365];

% 1996 -- 1997 25km data @ JPL
Server = 'http://podaac.jpl.nasa.gov/dods-hdf/nph-hdf/dods/nscat/W25/';

% VARIABLES -- REQUIRED
LonRange = [0.0 360.0];
LatRange =  [-80.0 80.0];
TimeRange = [1996+259/366 1997+180/365];
DepthRange = [0 0];
% See comments above; some archives have 55km data, some 25km.
% Resolution = 55.0; 
Resolution = 25.0;
DataName = 'JPL Level 2 NSCAT';
LongitudeName = 'WVC_Lon';
LatitudeName = 'WVC_Lat';
TimeName = ''; % Null tells getnscat20 to use pass time
DepthName = '';
 
SelectableVariables = str2mat('U_Wind','V_Wind','Wind_Speed',...
    'Wind_Dir','Quality_Flag');
DodsName = str2mat('Wind_Vel_U','Wind_Vel_V', ...
    'Wind_Speed', 'Wind_Dir','WVC_Quality_Flag');

% note: DataNull is applied *before* scaling
DataNull = [nan nan nan nan nan];
DataScale = [NaN NaN NaN NaN .01]; % Different type from variable in other files.
DataRange = [nan nan; nan nan; nan nan; nan nan; nan nan];
% ---- this is bogus and should be eliminated -----
%SerVarName = str2mat('Wind_Speed','Wind_Dir');
% -------------------------------------------------

% COMMENTS

% The revised abstract is attached.  I made changes to
% each section.  Feel free to edit for consistency
% with other dataset abstracts.
%
% Rob [Raskin, at jpl, 11/25/97]

Comments1 = sprintf('%s\n', ...
'            NASA/JPL Level 2 High Resolution NSCAT (Ocean Winds)',...
' ',...
'NSCAT, the NASA Scatterometer, is a specialized microwave radar that measures',...
'the speed and direction of winds over the global ocean surface. The primary',...
'mission of NSCAT is to acquire all-weather, high-resolution measurements of',...
'near surface winds over the global oceans. The coverage is nearly global every',...
'2 days. The NSCAT Science Product (NSP) consists of several distinct data sets:',...
'Level 1.7 (colocated ocean sigma-0 data), Level 2.0 (vector winds in low or',...
'high resolution swaths) and Level 3.0 (gridded vector winds).',...
' ',...
'The Level 2 NSCAT high resolution product provides wind speed and direction',...
'averaged over 25 km "wind vector cells".  There are 48 wind vector cells in each',...
'cross-track row, with a small spatial gap between the leftmost and rightmost',...
'24 cells.  There are at most 1624 rows per satellite revolution (or file). ',...
'In this data product, the wind direction ambiguities have been removed.',...
'A quality flag is also provided.',...
' ',...
'References:',...
'NSCAT Scatterometer Science Product, Levels 1.7, 2, 3 (JPL), Available at',...
'http://podaac-www.jpl.nasa.gov:2031/dataset_docs/nscat_25km.html');

Comments2 = sprintf('%s\n', ...
' Units:  Meters/Second (m/s)',...
' Scale Factor: 0.01',...
' Resolution: 25 km (spatial)',...
'             4 seconds (temporal)',...
' Accuracy:',...
'         Speed:     2 m/s (winds < 20 m/s)',...
'                    10%   (winds > 20 m/s)',...
'         Direction: 20 degrees',...
' Range:',...
'         Speed:     0 - 50 m/s',...
'         Direction: 0 - 359.99 degrees',...
' Time_Period_of_Content',...
'      Beginning_Date:1996/09/15',...
'      Ending_Date:1997/06/29',...
' Spatial_Domain',...
'      Bounding Coordinates',...
'           West Bounding Coordinate:0.0',...
'           East Bounding Coordinate:360.0',...
'           South Bounding Coordinate:-75 .0',...
'           North Bounding Coordinate:+75.0',...
' Point_of_Contact',...
'      Contact Person:RASKIN, ROB',...
'      Contact Position:Systems Engineer',...
'      Address            NASA',...
'            Jet Propulsion Laboratory',...
'            4800 Oak Grove',...
'            Pasadena, CA  91109',...
'      Telephone:(818) 306-6061',...
'      Electronic Mail Address:INTERNET > robert.raskin@jpl.nasa.gov',...
'      Contact Person:SGOUROS, TOM',...
'      Contact Position:Technical Support',...
'      Address',...
'            Graduate School of Oceanography',...
'            University of Rhode Island',...
'            South Ferry Road',...
'            Narragansett, Rhode Island  02882',...
'            USA',...
'      Electronic Mail Address:INTERNET > support@dods.gso.uri.edu');

Comments = [Comments1 Comments2];
