15,534 research outputs found
wde0924/X-STILT: X-STILT (for Geoscientific Model Development 2018)
No full text<p>This first release includes R codes for starting forward-time box runs and backward-time column runs and codes for X-STILT XCO2 simulations based on ODIAC emission inventory and OCO-2 satellite profiles. Model developments are ongoing.</p>
<p>Please contact Dien Wu ([email protected]) if you have any questions, comments, and suggestions.</p>
uataq/X-STILT: X-STILT for TROPOMI and OCO-2/3
No full textLatest release on X-STILT in interpreting TROPOMI (use with cautions for NO2, no chemistry implemented yet) and OCO-2/3 data.
README can be found at https://github.com/uataq/X-STILT/blob/master/README.md.
Please always access the development version from https://github.com/uataq/X-STILT. Versions on Zenodo can be outdated.
Please refer to the STILT tutorial https://github.com/uataq/stilt, if you are not familiar with our Lagrangian system.
Please contact Dien Wu ([email protected]) OR preferrably submit a pull request on GitHub (https://github.com/uataq/X-STILT) describing your specific error messages.
This version (v1.5) bookmarks the code version documented in the following manuscripts:
Wu, D., Lin, J. C., Fasoli, B., Oda, T., Ye, X., Lauvaux, T., Yang, E. G., and Kort, E. A.: A Lagrangian approach towards extracting signals of urban CO2 emissions from satellite observations of atmospheric column CO2 (XCO2): X-Stochastic Time-Inverted Lagrangian Transport model ("X-STILT v1"), Geosci. Model Dev., 11, 4843-4871, https://doi.org/10.5194/gmd-11-4843-2018, 2018.
Wu, D., Liu, J., Wennberg, P. O., Palmer, P. I., Nelson, R. R., Kiel, M., and Eldering, A.: Towards sector-based attribution using intra-city variations in satellite-based emission ratios between CO2 and CO, Atmos. Chem. Phys. Discuss. [preprint], https://doi.org/10.5194/acp-2021-1029, accepted, 2022
wde0924/X-STILT: X-STILT (for Geoscientific Model Development 2018)
No full text<p>This release includes the model code of X-STILT built on STILT (Lin et al., 2003) and STILT-R version 2 (Fasoli et al., 2018) and bookmarks the code version documented in the following manuscript:</p>
<p>Wu, D., Lin, J. C., Oda, T., Ye, X., Lauvaux, T., Yang, E. G., and Kort, E. A.: A Lagrangian Approach Towards Extracting Signals of Urban CO2 Emissions from Satellite Observations of Atmospheric Column CO2 (XCO2): X-Stochastic Time-Inverted Lagrangian Transport model ("X-STILT v1.1"), Geosci. Model Dev. Discuss., <a href="https://doi.org/10.5194/gmd-2018-123">https://doi.org/10.5194/gmd-2018-123</a>, in review, 2018.</p>
<p>Please contact Dien Wu ([email protected]) if you have any questions, comments, and suggestions.</p>
Convergent Route to <i>ent</i>-Kaurane Diterpenoids: Total Synthesis of Lungshengenin D and 1α,6α-Diacetoxy-<i>ent</i>-kaura-9(11),16-dien-12,15-dione
No full textThe
Hoppe’s homoaldol reaction of a cyclo-hexenyl carbamate
with an aldehyde followed by an unprecedented BF3·OEt2 mediated intramolecular Mukaiyama–Michael-type reaction
affords the tetracyclic core structure of ent-kaurane
diterpenoids. The usage of this convergent approach for assembling
these natural products is demonstrated by the first asymmetric total
syntheses of two highly oxidized ent-kaurane diterpenoids:
Lungshengenin D and 1α,6α-diacetoxy-ent-kaura-9(11),16-dien-12,15-dione
Control and Filtering for Discrete Linear Repetitive Processes with H infty and ell 2--ell infty Performance
No full textRepetitive processes are characterized by a series of sweeps, termed passes, through a set of dynamics defined over a finite duration known as the pass length. On each pass an output, termed the pass profile, is produced which acts as a forcing function on, and hence contributes to, the dynamics of the next pass profile. This can lead to oscillations which increase in amplitude in the pass to pass direction and cannot be controlled by standard control laws. Here we give new results on the design of physically based control laws for the sub-class of so-called discrete linear repetitive processes which arise in applications areas such as iterative learning control. The main contribution is to show how control law design can be undertaken within the framework of a general robust filtering problem with guaranteed levels of performance. In particular, we develop algorithms for the design of an H? and dynamic output feedback controller and filter which guarantees that the resulting controlled (filtering error) process, respectively, is stable along the pass and has prescribed disturbance attenuation performance as measured by and – norms
Convergent Route to <i>ent</i>-Kaurane Diterpenoids: Total Synthesis of Lungshengenin D and 1α,6α-Diacetoxy-<i>ent</i>-kaura-9(11),16-dien-12,15-dione
No full textThe
Hoppe’s homoaldol reaction of a cyclo-hexenyl carbamate
with an aldehyde followed by an unprecedented BF3·OEt2 mediated intramolecular Mukaiyama–Michael-type reaction
affords the tetracyclic core structure of ent-kaurane
diterpenoids. The usage of this convergent approach for assembling
these natural products is demonstrated by the first asymmetric total
syntheses of two highly oxidized ent-kaurane diterpenoids:
Lungshengenin D and 1α,6α-diacetoxy-ent-kaura-9(11),16-dien-12,15-dione
wde0924/X-STILT: X-STILT
No full text<p>This first release includes R codes for starting forward-time box runs and backward-time column runs and codes for X-STILT XCO2 simulations based on OCO-2 satellite profiles. Model developments are ongoing.</p>
<p>Please contact Dien if you have any questions, comments, and suggestions.</p>
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