Zobrazeno 1 - 10
of 14
pro vyhledávání: '"I. N. Williams"'
Publikováno v:
Geoscientific Model Development, Vol 10, Iss 5, Pp 1873-1888 (2017)
Winter wheat is a staple crop for global food security, and is the dominant vegetation cover for a significant fraction of Earth's croplands. As such, it plays an important role in carbon cycling and land–atmosphere interactions in these key region
Externí odkaz:
https://doaj.org/article/d85d2d8ac7a04165b0d48487e6460403
Publikováno v:
Atmospheric Chemistry and Physics, Vol 14, Iss 3, Pp 1571-1585 (2014)
Recent advances in atmospheric transport model inversions could significantly reduce uncertainties in land carbon uptake through the assimilation of CO2 concentration measurements at weekly and shorter timescales. The potential of these measurements
Externí odkaz:
https://doaj.org/article/58a959a22bfc4e44a6f48dea5b576fa1
Using boundary layer equilibrium to reduce uncertainties in transport models and CO2 flux inversions
Publikováno v:
Atmospheric Chemistry and Physics, Vol 11, Iss 18, Pp 9631-9641 (2011)
This paper reexamines evidence for systematic errors in atmospheric transport models, in terms of the diagnostics used to infer vertical mixing rates from models and observations. Different diagnostics support different conclusions about transport mo
Externí odkaz:
https://doaj.org/article/fefcb0f265074c338fc5ac7abe0c9f13
Publikováno v:
Environmental Research Letters, Vol 9, Iss 9, p 094011 (2014)
The impacts of historical droughts and heat-waves on ecosystems are often considered indicative of future global warming impacts, under the assumption that water stress sets in above a fixed high temperature threshold. Historical and future (RCP8.5)
Externí odkaz:
https://doaj.org/article/e0a52a1edce744b6b6a4f4c85da5e885
Autor:
I N Williams, C Rohr
Publikováno v:
Environment and Planning B: Planning and Design. 21(5):555-567
In 1991 the Directorate General XVI of the Commission of the European Communities commissioned a study to evaluate the impact of the opening of the Channel Tunnel on the economic development of regions within the European Community. Part of this stud
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0a639cce6ca5c500ec3538c32431d0f4
http://www.envplan.com/abstract.cgi?id=b210555
http://www.envplan.com/abstract.cgi?id=b210555
Using boundary layer equilibrium to reduce uncertainties in transport models and CO2 flux inversions
This paper reexamines evidence for previously hypothesized errors in atmospheric transport models and CO2 flux inversions by evaluating the diagnostics used to infer vertical mixing rates from observations. Several conventional mixing diagnostics are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0b822f9d33cdea5ec673fa5b15ae3feb
https://doi.org/10.5194/acpd-11-11455-2011
https://doi.org/10.5194/acpd-11-11455-2011
Autor:
I N Williams
Publikováno v:
Environment and Planning A. 11(1):3-22
This paper introduces a loose-knit family of spatial-allocation models, which locate entities in two-dimensional space, based on a general framework which merges an input—output type model with a spatial-interaction type model. Explicit attention i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6dd4c351fd17b3151d8c831184ca1efe
http://www.envplan.com/epa/fulltext/a11/a110003.pdf
http://www.envplan.com/epa/fulltext/a11/a110003.pdf
Autor:
I N Williams, Referee R S Baxter
Publikováno v:
Environment and Planning A: Economy and Space. 9:215-221
The purpose of this subroutine is to calibrate singly or doubly constrained gravity models by adjusting the impedance parameter beta using a three-point rational function to ensure that the observed and model mean trip costs are within a prespecified
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20547c563206953e8059a8609f5be09b
https://doi.org/10.1068/a090215
https://doi.org/10.1068/a090215
Autor:
R. Baxter, I N Williams
Publikováno v:
Environment and Planning A: Economy and Space. 7:3-20
The Garin–Lowry model is a well-documented spatial interaction model which does, however, leave unanswered questions that relate to the constraint procedure and the supply component. The incorporation of a stock simulation model satisfies both thes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a438c85ca64d60352a1e5c506a786165
https://doi.org/10.1068/a070003
https://doi.org/10.1068/a070003