Cate Desktop 0.9.0 Demo

Requires

• Installed Cate Core 0.9.0dev3
• Installed Cate Desktop 0.9.0-dev.3

Step 1 - Get Data

In DATA SOURCES panel:

1. Find aer mon
2. Select esacci.AEROSOL.mon.L3.AAI.multi-sensor.multi-platform.ms_uvai.1-5-7.r1
3. Press Download button --> Download Data Source dialog opens. In the dialog:
   • Time: 2010-01-01 to 2010-12-31
   • Local data source name: 2010.AEROSOL.mon.L3.AAI.multi-sensor.multi-platform.ms_uvai.1-5-7.r1
   • Select to open it after download
   • Press Download and Open Local button --> res_1

Once more in DATA SOURCES panel:

1. Find cloud mon
2. Select esacci.CLOUD.mon.L3C.CLD_PRODUCTS.multi-sensor.multi-platform.ATSR2-AATSR.2-0.r1
3. Press Download button --> Download Data Source dialog opens. In the dialog:
   • Time: 2010-01-01 to 2010-12-31
   • Variable: cfc (important, just one, otherwise the dataset takes way too much time to download!)
   • Local data source name: 2010.CLOUD.mon.L3C.CLD_PRODUCTS.multi-sensor.multi-platform.ATSR2-AATSR.2-0.r1
   • Select to open it after download
   • Press Download and Open Local button --> res_2

Step 2 - Subsets

In OPERATIONS panel:

1. Find sub
2. Select subset_spatial
3. Press Apply --> Add Operation Step - subset_spatial dialog opens. In the dialog:
   • ds: res_1 (Aerosol)
   • region: -20,20,30,70 (Europe + North Africa)
   • Press Apply button --> res_3

Once more in OPERATIONS panel:

1. Find sub
2. Select subset_spatial
3. Press Apply --> Add Operation Step - subset_spatial dialog opens. In the dialog:
   • ds: res_2 (Cloud)
   • region: -20,20,30,70 (Europe + North Africa)
   • Press Apply button --> res_4

Step 3 - Time Series

Visualization through time

Make two views first:

1. In VIEWS panel, press New World View button --> new World View (2).
2. In World View (2), click the Split Vertical icon on the top-right.

There should now be two globes side-by-side.

In *WORKSPACE panel, make sure res_4 is selected.

In LAYERS panel:

1. Select color map blues
2. Move Index into time slider

Time series plots

In PLACEMARKS panel:

1. Press Click a point... button
2. Click point in 3D globe, e.g. next to Rome

Create plots:

1. Click tab of World View (1) --> active view

2. Select aerosol subset step

3. In VARIABLES panel, click Create time series... button --> plot appears after World View (1)

4. Click the Split Horizontal icon on the top-right of the view --> plot is shown below World View (1).

5. Click tab of World View (2) --> active view

6. Select cloud subset step

7. In VARIABLES panel, click Create time series... button --> plot appears after World View (2)

8. Click the Split Horizontal icon on the top-right of the view --> plot is shown below World View (2).

Step 4 - Coregistration

In OPERATIONS panel:

1. Find cor
2. Select coregister
3. Press Apply --> Add Operation Step - coregister dialog opens. In the dialog:
   • ds_master: res_3 (Aerosol)
   • ds_slave: res_4 (Cloud)
   • Press Apply button --> res_5

Step 5 - Find Correlation

In OPERATIONS panel:

1. Find cor
2. Select pearson_correlation
3. Press Apply --> Add Operation Step - pearson_correlation dialog opens. In the dialog:
   • ds_x: res_3 (Aerosol)
   • ds_y: res_5 (Cloud coregistered with Aerosol)
   • var_x: absorbing_aerosol_index
   • var_y: cfc (cloud fraction coverage)
   • Press Apply button --> res_6

Note: This will take 30-60 secs, because the op is not yet optimised. It also still lacks a progress indicator.

In LAYERS panel:

1. Select color map. e.g. "bone"
2. Select Alpha blending
3. Adjust Display range

Step 6 - Write Correlations

Select operation write_netcdf4 for res_6.