{
"cells": [
{
"cell_type": "markdown",
"metadata": {},
"source": [
"# Aerosol specification\n",
"\n",
"Contributed by Abigail Williams and Lynn Russell\n"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"---"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Overview\n",
"The aerosol specification is a parameterized particle size distribution (PSD) made up of three lognormal modes:\n",
"\n",
"| |Mode 1 | Mode 2 | Mode 3 |\n",
"|-----|-------|--------|--------|\n",
"|**Na (mg-1)** | 45.7 | 105.5 | 1.6 |\n",
"|**Dg ($\\mu$m)** | 0.04 | 0.14 | 0.50 |\n",
"|**$\\sigma$g** | 1.7 | 1.6 | 1.7 |\n",
"|**Kappa** | 0.3 | 0.5 | 0.9 |\n",
"\n",
"The above values are modal fits to the median aerosol PSD measured at Zeppelin Observatory in Svalbard (~1000 km upwind of COMBLE) during March-May 2020. We refer to this size distribution as PSDZSM where ZSM stands for Zeppelin-Observatory Springtime Median. Kappa values are informed by the analysis of filter measurements of aerosol composition at Zeppelin Observatory and HTDMA measurements during COMBLE.\n",
"\n",
"Let's plot PSDZSM below."
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"---"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Imports"
]
},
{
"cell_type": "code",
"execution_count": 2,
"metadata": {
"tags": []
},
"outputs": [],
"source": [
"import pandas as pd\n",
"import numpy as np\n",
"import matplotlib.pyplot as plt"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"## Read data from Google Sheets\n",
"The PSDZSM parameters are stored in a google sheet here. Let's read in that data."
]
},
{
"cell_type": "code",
"execution_count": 3,
"metadata": {
"tags": []
},
"outputs": [
{
"data": {
"text/html": [
"\n",
"\n",
"
\n",
" \n",
" \n",
" | \n",
" Mode | \n",
" N_a | \n",
" D_g | \n",
" sigma_g | \n",
" kappa | \n",
"
\n",
" \n",
" \n",
" \n",
" | 0 | \n",
" Aitken | \n",
" 58 | \n",
" 0.04 | \n",
" 1.7 | \n",
" 0.3 | \n",
"
\n",
" \n",
" | 1 | \n",
" Accumulation | \n",
" 134 | \n",
" 0.14 | \n",
" 1.6 | \n",
" 0.5 | \n",
"
\n",
" \n",
" | 2 | \n",
" Sea Spray | \n",
" 2 | \n",
" 0.50 | \n",
" 1.7 | \n",
" 0.9 | \n",
"
\n",
" \n",
"
\n",
"