tropess-plots

Plotting data from TROPESS Level 2 products

Setup

See Setup

Data Access

See Data Access

Browse products

Browse TROPESS products:

open https://disc.gsfc.nasa.gov/datasets?keywords=tropess

We will be using CrIS JPSS-1 Methane forward stream. To see all the available data for CrIS JPSS-1 Methane (CH4) go to the CrIS JPSS-1 Online Archive for CH4:

open https://tropess.gesdisc.eosdis.nasa.gov/data/TROPESS_Summary/TRPSYL2CH4CRS1FS.1

Download the sample data

For this exercise, download the TROPESS Summary Methane (CH4) product for May 16, 2023:

data_file=TROPESS_CrIS-JPSS1_L2_Summary_CH4_20230516_MUSES_R1p20_FS_F0p6.nc

pushd ./data

# download the data file
wget --load-cookies ~/.urs_cookies --save-cookies ~/.urs_cookies \
     --auth-no-challenge=on --keep-session-cookies --content-disposition \
     https://tropess.gesdisc.eosdis.nasa.gov/data/TROPESS_Summary/TRPSYL2CH4CRS1FS.1/2023/$data_file

# download the user guide
user_guide=TROPESS-CH4_L2_Product_Quick_Start_User_Guide_Summary_only.pdf
wget --load-cookies ~/.urs_cookies --save-cookies ~/.urs_cookies \
     --auth-no-challenge=on --keep-session-cookies --content-disposition \
https://docserver.gesdisc.eosdis.nasa.gov/public/project/TROPESS/User_Guides/$user_guide

popd     

Run

Configure the project:

source configure.sh

Run main.py:

python3 main.py

Updating the code

source configure.sh

Open the project directory in Visual Studio Code:

code .

Examples

Bias corrected column-averaged dry air mixing ratio of Methane for the column from 826 hPa to Top of Atmosphere (TOA) in ppbv.

The scatter plot is a direct plot of the data values.

The spacially interpolated plots use SciPy cKDTree with a maximum distance to preserve large areas where there is no data.

Scatter Plot

Spacial interpolation (3 degrees distance)

Spacial interpolation (4 degrees distance)

Spacial interpolation (5 degrees distance)

Citing this software

If you use this software, please cite it as below:

Kantchev, V., Plotting data from TROPESS Level 2 products (2023), Swift Software Group