37 research outputs found
Digital First: Die Open-Access-Tage 2020 erstmals als Online-Konferenz
Die Open-Access-Tage 2020 hĂ€tten wie ihre VorgĂ€nger als PrĂ€senzveranstaltung und mit einem eingefĂŒhrten Konzept in Bielefeld stattfinden sollen. Die Corona-Pandemie hat die Ausrichtung in der Form jedoch unmöglich gemacht. Um die Tagung nicht absagen zu mĂŒssen, haben sich die Veranstalter*innen entschlossen, sie mit kurzer Vorbereitungszeit und wenig Vorerfahrung ausschlieĂlich digital durchzufĂŒhren. In diesem Artikel beschreiben wir die Ausgangssituation und die Organisation unter verĂ€nderten Rahmenbedingungen sowie unsere Erfahrungen mit dem Online-Format, die fĂŒr andere, die Ăhnliches vorhaben, hilfreich sein könnten
The Missing Piece: Drought Impacts Monitoring Report from a Workshop in Tucson, AZ MARCH 5-6, 2013
Based on a shared interest to better understand the impacts of drought and the potential utility of using drought impacts reporting as a tool for monitoring conditions, researchers from the Carolinas RISA (Dow, Lackstrom, and Brennan), the Climate Assessment for the Southwest (Crimmins and Ferguson), and the Southwest Climate Science Center (Meadow) decided to convene a workshop in Tucson in March 2013. The primary goal was to assemble a small group of university and agency scientists involved with drought impacts monitoring to discuss opportunities and barriers associated with drought impacts reporting, recommend best practices for implementing a drought impacts reporting system, and develop a path forward for addressing or overcoming barriers. The longer-term objective of the initial meeting was to explore the feasibility of creating a community of practice that could share information and integrate activities related to drought impacts research and reporting
Re:Chicago
https://via.library.depaul.edu/museum-publications/1012/thumbnail.jp
The Atacama Cosmology Telescope: DR6 Gravitational Lensing Map and Cosmological Parameters
We present cosmological constraints from a gravitational lensing mass map
covering 9400 sq. deg. reconstructed from CMB measurements made by the Atacama
Cosmology Telescope (ACT) from 2017 to 2021. In combination with BAO
measurements (from SDSS and 6dF), we obtain the amplitude of matter
fluctuations at 1.8% precision,
and the Hubble
constant at
1.6% precision. A joint constraint with CMB lensing measured by the Planck
satellite yields even more precise values: ,
and . These measurements agree
well with CDM-model extrapolations from the CMB anisotropies measured
by Planck. To compare these constraints to those from the KiDS, DES, and HSC
galaxy surveys, we revisit those data sets with a uniform set of assumptions,
and find from all three surveys are lower than that from ACT+Planck
lensing by varying levels ranging from 1.7-2.1. These results motivate
further measurements and comparison, not just between the CMB anisotropies and
galaxy lensing, but also between CMB lensing probing on
mostly-linear scales and galaxy lensing at on smaller scales. We
combine our CMB lensing measurements with CMB anisotropies to constrain
extensions of CDM, limiting the sum of the neutrino masses to eV (95% c.l.), for example. Our results provide independent
confirmation that the universe is spatially flat, conforms with general
relativity, and is described remarkably well by the CDM model, while
paving a promising path for neutrino physics with gravitational lensing from
upcoming ground-based CMB surveys.Comment: 30 pages, 16 figures, prepared for submission to ApJ. Cosmological
likelihood data is here:
https://lambda.gsfc.nasa.gov/product/act/actadv_prod_table.html ; likelihood
software is here: https://github.com/ACTCollaboration/act_dr6_lenslike . Also
see companion papers Qu et al and MacCrann et al. Mass maps will be released
when papers are publishe
The Atacama Cosmology Telescope: DR6 gravitational lensing map and cosmological parameters
We present cosmological constraints from a gravitational lensing mass map covering 9400 deg2 reconstructed from measurements of the cosmic microwave background (CMB) made by the Atacama Cosmology Telescope (ACT) from 2017 to 2021. In combination with measurements of baryon acoustic oscillations and big bang nucleosynthesis, we obtain the clustering amplitude Ï 8 = 0.819 ± 0.015 at 1.8% precision, S8âĄÏ8(Ωm/0.3)0.5=0.840±0.028 , and the Hubble constant H 0 = (68.3 ± 1.1) km sâ1 Mpcâ1 at 1.6% precision. A joint constraint with Planck CMB lensing yields Ï 8 = 0.812 ± 0.013, S8âĄÏ8(Ωm/0.3)0.5=0.831±0.023 , and H 0 = (68.1 ± 1.0) km sâ1 Mpcâ1. These measurements agree with ÎCDM extrapolations from the CMB anisotropies measured by Planck. We revisit constraints from the KiDS, DES, and HSC galaxy surveys with a uniform set of assumptions and find that S 8 from all three are lower than that from ACT+Planck lensing by levels ranging from 1.7Ï to 2.1Ï. This motivates further measurements and comparison, not just between the CMB anisotropies and galaxy lensing but also between CMB lensing probing z ⌠0.5â5 on mostly linear scales and galaxy lensing at z ⌠0.5 on smaller scales. We combine with CMB anisotropies to constrain extensions of ÎCDM, limiting neutrino masses to âm Îœ < 0.13 eV (95% c.l.), for example. We describe the mass map and related data products that will enable a wide array of cross-correlation science. Our results provide independent confirmation that the universe is spatially flat, conforms with general relativity, and is described remarkably well by the ÎCDM model, while paving a promising path for neutrino physics with lensing from upcoming ground-based CMB surveys
Making cover crops work in the Northeast: Termination strategies for success
According to the 2017 USDA Agriculture Census, Northeast farms are planting over one million acres of cover crops, and momentum for this conservation practice continues to grow because of its crop, soil, and environmental benefit. Increasing financial incentives coupled with environmental regulations have pushed even more farmers to adopt cover crops. However, like any other crop grown on the farm, the benefits will only be realized with proper planning and timely management