Ocean Geophysical Remote sensing Data analyzer (OGDA)

Author: K.K.Liao

Contact: kl4180@nyu.edu どぞ

The scripts are used for Ocean Geophysical remote sensing research closely related to NASA PACE Satelliate Mission --> https://pace.oceansciences.org

Required Packages: (1) netCDF4,numpy,scipy,sklearn.metrics.pairwise,math,matplotlib.pyplot,urllib.request,os,pandas,bs4 (2) cartopy.crs, cartopy.feature ---> Geophysics Packages

Data Usage & Download Sites:

(1)NASA PACE Satelliate measurements (.nc): Link---> https://search.earthdata.nasa.gov/search?portal=obdaac

(2)NASA AERONET station measurements (.html): Link---> https://aeronet.gsfc.nasa.gov/newweb/webtoolaod_v3.html

(3)NASA PACE Data Matchups for Apparent Optical Properties (.csv):
Link---> https://pace.oceansciences.org/pacedatamatchups.htm

Folders and Examples:

(A)SatelliateSingleDayExample ---> .ipynb script is to read Single day NASA PACE Satelliate SWAP data (.nc file) and AERONET site measurement (exported as .html file).

Examples No.1: (1) Example Folder: [SatelliateSingleDayExample] Geo-coordinate is set as: lat=41; lon=1.36 Casablanca AERONET Station Coordinate (Revise the coordinate to fit your purpose) Measurement Date: 2024 9/15

Step No.1: Go to the NASA PACE Satelliate measurements (.nc): Link---> https://search.earthdata.nasa.gov/search?portal=obdaac to download satelliate measurement data file: "PACEOCI.20240915T122947.L2.OCAOP.V2_0.NRT.nc" in order to recover the result plots presented in the folder. eg. Satelliate SWAP & Ocean Color Cartopy plots

Step No.2: In the current foler, the .ipynb notebook file will convert geophysical data parameters to arrays, follow the instructions in the file -->

(a) Plotting satelliate measurement through Cartopy Package(3 resoulation options) eg. Rrs values, Ocean Color geophysical parameter .. etc. (b) AERONET station data measurements at available bands, and conversion to Rrs (remote sensing reflectance) from raw measurements at AERONET site. (c) Correction of Rrs Values at all available wavelengthes .

Examples No.2: (1) Example Folder: [AverageMatchUp] Geo-coordinate is set as: lat=41; lon=1.36 Casablanca AERONET Station Coordinate (Revise the coordinate to fit your purpose) Measurement Date: 2024 All available dates provided by NASA PACE (specific dates in attached .csv file)

Step No.1: Go to the NASA PACE Satelliate measurements (.nc): Link---> https://search.earthdata.nasa.gov/search?portal=obdaac to download satelliate measurement data files. (updated NASA PACE site offers group-files download options; with specific location specificed ---> use Earthdata Download App.)

Step No.2: In the current foler, the AverageMatchUps.ipynb notebook file will convert geophysical data parameters to arrays (for all .nc files in the current folder), follow the instructions in the file to proceed

(a) Plotting satelliate measurement through Cartopy Package(3 resoulation options) eg. Rrs values, Ocean Color geophysical parameter .. etc. (b) AERONET station data measurements at available bands, and conversion to Rrs (remote sensing reflectance) from raw measurements at AERONET site. (c) Correction of Rrs Values at all available wavelengthes. (d) Average calculation for all PACE data for specific station over available wavelengths. (e) Average calculation for all AERONET data for specific station over available wavelengths.