Collect several satellite images from the INPE/CPTEC collection

I have this script below to download ONLY ONE satellite image from channel 11 (infrared) for 11/10/2022 at 19:20 GMT.

QUESTION 1

But what I really want now is to download ALL of his imagesfrom 00:00 GMT to 23:50 GMT.

QUESTION 2

Another code I want is to specify the times, being for the same day but from 00:00 UTC to 02:00 UTC.

% Website below with the collection of images from INPE/CPTEC
% http://satelite.cptec.inpe.br/acervo/goes16.formulario.logic 


% The script below downloads only an image from the INPE/CPTEC collection

% Specify the filename (URL).
filename = 'http://satelite.cptec.inpe.br/repositoriogoes/goes16/goes16_web/ams_ret_ch11_baixa/2022/11/S11635384_202211011920.jpg';
% Read it in to a variable in my m-file.
rgbImage = imread(filename);
% Display the image.
imshow(rgbImage);
% Save the image to a file on my local hard drive.
imwrite(rgbImage, 'satellite image.jpg'); % imwrite(rgbImage, 'satellite image.png')

Best regards,

AP

Answer 1

[Mathieu NOE]

hello Augusto

try this code

as far as I could find out there are pictures available with a time delta of 10 minutes

choose the option to get the result for question Q1 or Q2 :

%% options 
option = 1 % :  to download ALL of his images from 00:00 GMT to 23:50 GMT
% option = 2 % :  to download  images  from 00:00 UTC to 02:00 UTC 

all the best

full code :

% GMT stands for Greenwich Mean Time. UTC is known as Universal Time. UTC is 0 hours ahead of GMT.
% So, when it is 11:00 am GMT  it will be  11:00 am UTC
% in short : Coordinated Universal Time is the same as in Greenwich Mean Time

% date and time intervals
day_date = '20221101';
% images are available by 10 minutes interval

%% options 
option = 1 % :  to download ALL of his images from 00:00 GMT to 23:50 GMT
% option = 2 % :  to download  images  from 00:00 UTC to 02:00 UTC 

httpsUrl = "http://satelite.cptec.inpe.br/repositoriogoes/goes16/goes16_web/ams_ret_ch11_baixa/2022/11/S11635384_";

%% loop every 10 minutes name
mm = 00; % start minutes at 00
hh = 00; % start hours at 00
iter = 0;

while 1    % indeed there are 145 pictures distant of 10 minustes in one day (from 00:00 GMT to 23:50 GMT)
    
    iter = iter + 1;

    if mm == 60
        mm = 00;
        hh = hh+1; % update hours 
    end
    
    %% option 1 
    if option == 1 && hh == 24
        break
    end
    %% option 2 :  to download  images  from 00:00 UTC to 02:00 UTC 
    if option == 2 && hh == 02 && mm == 10
        break
    end
    
    if hh<10
        str_hh = ['0' num2str(hh)];
    else
        str_hh = num2str(hh);
    end
    
    if mm<10
        str_mm = ['0' num2str(mm)];
    else
        str_mm = num2str(mm);
    end
    
    hh_mm_str = [str_hh str_mm];
    
    mm = mm+10; % update minutes 

    
    %%%%%%%%%%%%%%%%%%%% main code %%%%%%%%%%%%%%%%%%
    
    filename = ['S11635384_' day_date hh_mm_str '.jpg'];
    disp(strcat(filename, "  is processed"));
    filename_url = ['http://satelite.cptec.inpe.br/repositoriogoes/goes16/goes16_web/ams_ret_ch11_baixa/2022/11/' filename];
   
    % Read it in to a variable in my m-file.
    rgbImage = imread(filename_url);
%     % Display the image.
%     imshow(rgbImage);
    % Save the image to a file on my local hard drive.
    imwrite(rgbImage,filename); 

end

[Augusto Gabriel da Costa Pereira]

thank you Mathieu

your code worked perfectly.

[Mathieu NOE]

as always, my pleasure !