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Guillermo Gea-Izquierdo

Researcher
INIA-CSIC
Participates in 4 items

Sessions in which Guillermo Gea-Izquierdo participates

Tuesday 28 June, 2022

Time Zone: (GMT-05:00) Eastern Time (US & Canada)
9:20
9:20 - 10:35 | 1 hour 15 minutes
Symposium 1

Tree-ring time series provide long-term, annually resolved information on the growth of individual trees. However, public tree-ring archives contain a considerable portion of data collected from trees that have been selected with specific research questions in mind (e.g., for climate reconstruction).  This makes these archives a biased representation of the sensitivity of forest ecosystems to ongoing climate variation (e.g. temperature, precipitation), including non-stationarity (i.e....

10:05
10:05 - 10:20 | 15 minutes
Symposium 1

Past forest mortality after disturbances creates one source of uncertainty that needs to be taken into account to reconstruct biomass dynamics. Additionally, using unitless normalized data from tree-ring records to calibrate stand productivity in vegetation models constitutes another source of uncertainty for model calibration. In this presentation I would assess these two sources of uncertainty and discuss the influence of calibration technique in model-data fusion. I combined data from p...

13:30

Thursday 30 June, 2022

Time Zone: (GMT-05:00) Eastern Time (US & Canada)
9:20
9:20 - 10:50 | 1 hour 30 minutes
Proxy modellingData-model fusion

Sessions in which Guillermo Gea-Izquierdo attends

Monday 27 June, 2022

Time Zone: (GMT-05:00) Eastern Time (US & Canada)
8:30
8:30 - 12:30 | 4 hours

MAIDENiso is a numerical process-based model that allows researchers to simulate the growth of a virtual tree. Using daily meteorological data, the model simulates the physical and physiological processes taking place in the tree and its environment, to produce daily and yearly outputs comparable to dendrological observations. The model has been adapted and used successfully in boreal regions in North America. In an inverse mode, tree-ring obs...

13:30
13:30 - 17:30 | 4 hours

Free, in person and onlineWe will hold a practical, skills-based workshop introducing openDendro -- an open-source framework of the base analytic software tools used in dendrochronology in both the R and Python programming languages. openDendro is a new unified set of tree-ring analysis tools in open-source environments that provides the necessary baseline for dendro...

13:30 - 17:00 | 3 hours 30 minutes

Free, in person and onlineThe stable isotopic compositions of carbon and oxygen (d13C and d18O) measured in tree rings are valuable proxies for reconstructing paleoclimate and are increasingly used as paleophysiological proxies. Applying these proxies in ecophysiology and paleoclimate can be challenging as they rely on complex process-based models and poorly constrained input data. In recent years, h...

Tuesday 28 June, 2022

Time Zone: (GMT-05:00) Eastern Time (US & Canada)
11:00
11:00 - 12:15 | 1 hour 15 minutes
Symposium 1

Tree-ring time series provide long-term, annually resolved information on the growth of individual trees. However, public tree-ring archives contain a considerable portion of data collected from trees that have been selected with specific research questions in mind (e.g., for climate reconstruction).  This makes these archives a biased representation of the sensitivity of forest ecosystems to ongoing climate variation (e.g. temperature, precipitation), including non-stationarity (i.e....