{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Polar Multi-Sensor Aerosol Optical Properties (PMAp) Product"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"```{hint} \n",
"Execute the notebook on the training platform >>\n",
"```"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"The following module shows you the structure of `PMAp Aerosol Optical Depth Level 2` data and what information of the data files can be used in order to load, browse and visualize Aerosol Optical Depth at 550 nm.\n",
"\n",
"The polar multi-sensor aerosol optical properties product (PMAp) provides information on aerosol optical depth (AOD) at 550 nm and aerosol type (fine mode, coarse mode (dust) and volcanic ash) over ocean and land surfaces. The product is generated based on the Meteosat Second Generation instrument `GOME-2` with support of information from the instruments `AVHRR` and `IASI`.\n",
"\n",
"Find more information about the product at EUMETSAT's Product Navigator in this factsheet."
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"```{admonition} Basic facts\n",
"**Spatial resolution**: `Metop-A: 5km x 40 km`, `Metop-B: 10km x 40 km`
\n",
"**Spatial coverage**: `Global`
\n",
"**Data availability**: `since February 2014`\n",
"```"
]
},
{
"attachments": {},
"cell_type": "markdown",
"metadata": {},
"source": [
"```{admonition} How to access the data\n",
"\n",
"PMAp data can be ordered via the EUMETSAT Data Centre. In order to access the EUMETSAT Data Centre, you require an account for the EUMETSAT Earth Observation Portal. If you do not have an account for the EUMETSAT EO Portal, you can create an account here. \n",
"\n",
"**Data files used**: for the example in this notebook, we chose PMAp data for `8 April 2024`. In the data download interface, you can select a time period as well as a region of interest. Important under *Product Order Format* to choose `NetCDF`. \n",
"```\n",
"\n",
"
<xarray.DataArray 'aerosol_optical_depth' (ground_pixel: 2111040)> Size: 17MB\n", "array([-999.999999, -999.999999, -999.999999, ..., -999.999999,\n", " -999.999999, -999.999999])\n", "Coordinates:\n", " latitude (ground_pixel) float64 17MB 59.81 59.86 59.9 ... 83.75 83.75\n", " longitude (ground_pixel) float64 17MB 91.61 91.48 91.34 ... -155.4 -156.2\n", "Dimensions without coordinates: ground_pixel\n", "Attributes:\n", " long_name: AOD_aerosol_optical_depth_at_550nm\n", " units: 1
<xarray.DataArray 'aerosol_optical_depth' (ground_pixel: 77134)> Size: 617kB\n", "array([-999.999999, -999.999999, -999.999999, ..., -999.999999,\n", " -999.999999, -999.999999])\n", "Coordinates:\n", " latitude (ground_pixel) float64 617kB 55.95 56.0 56.04 ... 59.93 59.98\n", " longitude (ground_pixel) float64 617kB 36.12 35.99 35.86 ... -6.852 -6.712\n", "Dimensions without coordinates: ground_pixel\n", "Attributes:\n", " long_name: AOD_aerosol_optical_depth_at_550nm\n", " units: 1