Nicholas C Parazoo

Biographic Data

ID7992535
NAMENicholas C Parazoo
GIVEN NAMESNicholas C
FAMILY NAMEParazoo
SIGNATUREPARAZOO N C
AFFILIATIONSJet Propulsion Laboratory
VERIFIEDNo
TOTAL WORKS8
TOTAL CITATIONS0
AUTHOR COUNT8
EDITOR COUNT0
FIRST PUBLICATION YEAR2015
LATEST PUBLICATION YEAR2023
H-INDEX0

  • Climate change is enforcing physiological changes in Arctic Ecosystems

    Open AccessNima Madani, Nicholas C Parazoo et al.ARTICLEEnvironmental Research Letters2023

    Remote sensing and site-level observations have shown unprecedented changes in Arctic ecosystems owing to climate warming. These observations include greening and browning trends in Arctic vegetation as well as changes in species composition both in the tundra and the boreal forests. Here, we leveraged solar induced chlorophyll fluorescence (SIF) to study changes in ecosystem phenology across the pan-Arctic domain from 2000 to 2020. Ecoregions, a…

  • Forests for forests

    Open AccessZoe Pierrat, Jacob Bortnik et al.ARTICLEEnvironmental Research Letters2022

    Remote sensing is a powerful tool for understanding and scaling measurements of plant carbon uptake via photosynthesis, gross primary productivity (GPP), across space and time. The success of remote sensing measurements can be attributed to their ability to capture valuable information on plant structure (physical) and function (physiological), both of which impact GPP. However, no single remote sensing measure provides a universal constraint on …

  • Spatial covariation between solar-induced fluorescence and vegetation indices from Arctic-Boreal landscapes

    Open AccessAndrew J Maguire, Jan U H Eitel et al.ARTICLEEnvironmental Research Letters2021

    The Arctic-Boreal Zone (ABZ) is characterized by spatially heterogeneous vegetation composition and structure, leading to challenges for inferring patterns in vegetation productivity. A mechanistic understanding of the patterns and processes underlying spectral remote sensing observations is necessary to overcome these challenges. Solar-induced chlorophyll fluorescence (SIF), near-infrared reflectance of vegetation (NIRv), and chlorophyll/caroten…

  • Below-surface water mediates the response of African forests to reduced rainfall

    Open AccessNima Madani, John S Kimball et al.ARTICLEEnvironmental Research Letters2020

    Terrestrial ecosystem gross primary productivity (GPP) is the largest land-atmosphere carbon flux and the primary mechanism of photosynthetic fixation of atmospheric CO 2 into plant biomass. Anomalous rainfall events have been shown to have a great impact on the global carbon cycle. However, less is known about the impact of these events on GPP, especially in Africa, where in situ observations are sparse. Here, we use a suite of satellite and oth…

  • Exposure to cold temperature affects the spring phenology of Alaskan deciduous vegetation types

    Open AccessMingjie Shi, Nicholas C Parazoo et al.ARTICLEEnvironmental Research Letters2019

    Temperature is a dominant factor driving arctic and boreal ecosystem phenology, including leaf budburst and gross primary production (GPP) onset in Alaskan spring. Previous studies hypothesized that both accumulated growing degree day (GDD) and cold temperature (chilling) exposure are important to leaf budburst. We test this hypothesis by combining both satellite and aircraft vegetation measurements with the Community Land Model Version 4.5 (CLM)…

  • Assessing fossil fuel CO 2 emissions in California using atmospheric observations and models

    Open AccessHeather Graven, M L Fischer et al.ARTICLEEnvironmental Research Letters2018

    Analysis systems incorporating atmospheric observations could provide a powerful tool for validating fossil fuel CO 2 (ffCO 2 ) emissions reported for individual regions, provided that fossil fuel sources can be separated from other CO 2 sources or sinks and atmospheric transport can be accurately accounted for. We quantified ffCO 2 by measuring radiocarbon ( 14 C) in CO 2 , an accurate fossil-carbon tracer, at nine observation sites in Californi…

  • Global land carbon sink response to temperature and precipitation varies with Enso phase

    Open AccessYuanyuan Fang, A M Michalak et al.ARTICLEEnvironmental Research Letters2017

    Climate variability associated with the El Niño-Southern Oscillation (ENSO) and its consequent impacts on land carbon sink interannual variability have been used as a basis for investigating carbon cycle responses to climate variability more broadly, and to inform the sensitivity of the tropical carbon budget to climate change. Past studies have presented opposing views about whether temperature or precipitation is the primary factor driving the …

  • Disentangling climatic and anthropogenic controls on global terrestrial evapotranspiration trends

    Open AccessJiafu Mao, Wenting Fu et al.ARTICLEEnvironmental Research Letters2015

    We examined natural and anthropogenic controls on terrestrial evapotranspiration (ET) changes from 1982 to 2010 using multiple estimates from remote sensing-based datasets and process-oriented land surface models. A significant increasing trend of ET in each hemisphere was consistently revealed by observationally-constrained data and multi-model ensembles that considered historic natural and anthropogenic drivers. The climate impacts were simulat…