Metadata created on 13-08-2025 by Bruno B. Meller

Authors: Bruno Backes Meller (bruno.meller@usp.br, IF-USP), Marco Aurélio Franco (IAG-USP), Rafael Valiati (IF-USP), Christopher Pöhlker (MPI-C), Luiz Augusto Toledo Machado (IF-USP, MPI-C), Florian Ditas (HANC, MPI-C), Leslie A. Kremper (HANC, MPI-C), Subha S. Raj (MPI-C), Cleo Quaresma Dias-Júnior (INPA-CLIAMB, IFPA), Flávio Augusto Farias D’Oliveira (IFPA), Luciana Varanda Rizzo (IF-USP), Ulrich Pöschl (MPI-C), Paulo Artaxo (IF-USP, CEAS).

Institutions: Institute of Physics (IF-USP), University of São Paulo, São Paulo, Brazil; Department of Atmospheric Sciences, Institute of Astronomy, Geophysics and Atmospheric Sciences (IAG-USP), University of São Paulo, São Paulo, Brazil; Multiphase Chemistry Department, Max Planck Institute for Chemistry (MPI-C), Mainz, Germany; National Institute of Amazonian Research (INPA-CLIAMB), Manaus, Brazil; Department of Physics, Federal Institute of Pará (IFPA), Belém, Brazil; Center for Sustainable Amazon Studies (CEAS), University of São Paulo, Brazil.

This folder contains .csv files corresponding to each figure in the related paper, as well as .m MATLAB scripts that read the data and reproduce the figures, including those in the supplementary material. All codes were run in MATLAB R2022b.

File descriptions:

Fig1.csv – Median diurnal cycle of the PNSD (dN/dlogDp [cm⁻³]) during non-event days at ATTO. The first column contains local time shifted by −12 hours so that the series begins at midday (12:00 local time) and ends at noon the next day. This format facilitates plotting from 12:00 to 12:00 local time. The data for the first 24 hours shows the absolute PNSD values, and the last 24 hours shows the normalized PNSD.

Fig2.csv – Data used to calculate the particle growth rate (GR) via the appearance time method. The first row lists particle diameters (nm) for the 10–25 nm range. The second row contains the corresponding local times when concentrations in each bin reached 50% of their daily maximum.

Fig3_1.csv – Median diurnal cycle of the formation rate of 10 nm particles (J₁₀,[# cm⁻³ h⁻¹]) for event and non-event days, separated into terms from the aerosol balance equation: particle number variation (dN/dt), coagulation sink (Coag.), condensational growth (Growth), and total formation rate (Total). The first column lists local time (h).

Fig3_2.csv – Daily production rates of particles 10–25 nm in diameter (DPR₁₀) for event days. The first column contains the date of each event day; the second includes the corresponding DPR₁₀ value ([cm⁻³ day⁻¹]).

Fig3_3.csv – Daily production rates of particles 10–25 nm in diameter (DPR₁₀) for non-event days. The first column contains the date of each non-event day; the second includes the corresponding DPR₁₀ value ([cm⁻³ day⁻¹]).

FigB1.csv – Time series of the particle number size distribution (PNSD, dN/dlogDp [cm⁻³]) for two days (09-Apr-2022 and 27-Apr-2022). The first column contains local time. Subsequent columns contain PNSD values for each particle diameter bin, with the first row listing the geometric mean diameter of each bin (nm).

FigS1.csv – Median diurnal cycle of the PNSD (dN/dlogDp [cm⁻³]) during non-event days at ZF2 site. The first column contains local time shifted by −12 hours so that the series begins at midday (12:00 local time) and ends at noon the next day. This format facilitates plotting from 12:00 to 12:00 local time. The data for the first 24 hours shows the absolute PNSD values, and the last 24 hours shows the normalized PNSD.

FigS2.csv - Separated for event and non-event days, we show the precipitation frequency (fraction) along with statistics for the diurnal anomaly of the equivalent potential temperature (Δθe, [K]), including the diurnal medians and 25th and 75th percentiles.

Details are described in Quiet New Particle Formation is a Significant Aerosol Source in the Amazon Boundary Layer (doi: to be determined).

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