Differential pulse sensitivity of nitric and nitrous oxide emissions to temperature, carbon, and nitrogen following wetting of desert soils

Infrequent soil wetting in deserts can induce large nitrogen (N) trace gas pulses; however, how other abiotic mechanisms interactively control the timing and magnitude of these pulses is not clear. In particular, production of nitric (NO) and nitrous (N2O) oxide may be differentially dependent on temperature, carbon, and nitrogen availability. At a desert field site in southern California, USA, we used an automated sensor system in four years of field campaigns to track NO and N2O pulse responses to experimental manipulations of carbon (C) and N across a range of ambient temperatures and shrub “islands of fertility”. We observed rapid onset and shorter duration of N2O pulses immediately after wetting compared to lagged and extended pulses of NO, suggesting preferential incorporation of N initially into N2O in anoxic microsites and then to NO as soils dry. We identified strong nitrogen limitation and exponential temperature dependence of NO pulses, particularly for soils located under sh..., 2.1 Study site and focal species
We conducted five field experiments, spanning four years and encompassing both summer and winter seasons, at Boyd Deep Canyon Desert Research Center (hereafter “BDC”; Palm Desert, California, USA; 33.6480° N, 116.3765° W, 290 meters ASL). BDC is situated in Southern California’s Colorado Desert, a subregion of the Sonoran Desert, and experiences a climate characterized by hot summers and mild winters. Up to 85% of the precipitation at this site occurs in the winter season and predominantly as rain, but sporadic heavy rainfall can occur in summer associated with North American monsoons. Monthly average temperatures in this area range from 12 °C in January and February to 35 °C in July and August, with temperatures occasionally exceeding 45 °C during the summer months. Annual atmospheric nitrogen deposition averages 4.2 kg ha-1 yr-1, a relatively low rate for deserts in the southwestern United States (Schwede & Lear, 2014) and globally (Ackerman e..., # Data for: Differential pulse sensitivity of nitric and nitrous oxide emissions to temperature, carbon, and nitrogen following wetting of desert soils

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Contains two NO and N2O flux files:
1.) N_rawfluxes.txt contains raw instantaneous NO and N2O fluxes and accompanying soil temperature, moisture, and other metadata measured for all experiments included in the associated manuscript.

2.) IntegratedN2ONOFluxes_BoydDeepCanyon.txt contains 24-hour integrated measurements of NO and N2O fluxes and accompanying soil temperature, moisture, and other metadata measured for experiments conducted at Boyd Deep Canyon.

## Description of data and file structure

1. N_fluxes.txt data columns:
DateTime: Start time of each instantaneous measurement (YYYY-MM-DD HH:MM:SS)
TSW: Time Since Wetting; negative values indicate dry soils prior to experimental wetting, positive values indicate amount of time in hours since experimental wetting occurred
SoilTemp: Soil temperature (degrees Celsius) c...,