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Wolfram Schlenker | wolfram-schlenker.blogspot.com Reviews
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Environmental Economics
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Wolfram Schlenker: Daily weather data: original vs knock-off
http://wolfram-schlenker.blogspot.com/2014/04/daily-weather-data-original-vs-knock-off.html
Saturday, April 12, 2014. Daily weather data: original vs knock-off. Any study that focuses on nonlinear temperature effects requires precise estimates of the exact temperature distribution. Unfortunately, most gridded weather data sets only give monthly estimates (e.g., CRU, University of Delaware, and up until recently PRISM). Monthly averages can hide extremes - both hot and cold. Monthly means don't capture how often and by how much temperatures pass a certain threshold. The PRISM climate group.
Wolfram Schlenker: Massetti et al. - Part 1 of 3: Convergence in the Effect of Warming on US Agriuclture
http://wolfram-schlenker.blogspot.com/2013/12/massetti-et-al-part-1-of-3-convergence.html
Tuesday, December 31, 2013. Massetti et al. - Part 1 of 3: Convergence in the Effect of Warming on US Agriuclture. Has posted a new paper. Joined with Robert Mendelsohn. That takes another look at the best climate predictor of farmland prices in the United States. He'll present it at the ASSA meetings in Philadelphia - I have seen him present the paper at the 2013 NBER spring EEE meeting and at the 2013 AERE conference. And wanted to provide a few discussion points for people interested in the material.
Wolfram Schlenker: Massetti et al. - Part 3 of 3: Comparison of Degree Day Measures
http://wolfram-schlenker.blogspot.com/2014/01/massetti-et-al-part-3-of-3-comparison.html
Thursday, January 2, 2014. Massetti et al. - Part 3 of 3: Comparison of Degree Day Measures. The following two tables regress log corn and soybean yields, respectively, for all counties east of the 100 degree meridian (except Florida) in 1979-2011 on four weather variables, state-specific restricted cubic splines with 3 knots, and county fixed effects. Column definitions are the same as in yesterday's post. Explaining log corn yields 1979-2011. Explaining log soybean yields 1979-2011. An earlier version ...
Wolfram Schlenker: July 2012
http://wolfram-schlenker.blogspot.com/2012_07_01_archive.html
Thursday, July 26, 2012. When you read the news these days about US agriculture, the headlines generally start with "US Drought." My guess is that when a reporter sees a wilted plant, the first reaction is that precipitation must have been below normal. Below is a graph that plots cumulative precipitation for the areas where corn is grown in the US. Similar to the previous post about extreme heat. The red line is for 2012, while the grey lines give the historic data for 1960-2011. It was very hot that da...
Wolfram Schlenker: August 2014
http://wolfram-schlenker.blogspot.com/2014_08_01_archive.html
Sunday, August 3, 2014. 2014 - colder and slightly wetter than average US growing conditions. Futures prices for corn have been decreasing a lot - for example the December 2014 contract for corn has decreased by more than 25% between the beginning of May and the beginning of August ( chart of CME. Indicating that the market either anticipates increased supply or a drop in demand, likely the former. Maybe good weather will be giving the US, which produces 40% of the world's corn a bumper crop.
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G-FEED: Introducing SCYM
http://www.g-feed.com/2015/05/introducing-scym.html
Global Food, Environment and Economic Dynamics. Monday, May 11, 2015. In the hopes of figuring out how to raise crop yields or farmer incomes around the world, it would be really nice if we had a quick and accurate way of actually measuring yields for individual fields. That has motivated a lot of work over the years on using satellite data, and we have a paper out this week. Describing another step in that direction. Provides more detail, which I won’t bore readers with here. But to give a sen...The fig...
G-FEED: Adaptation Illusions
http://www.g-feed.com/2014/06/adaptation-illusions.html
Global Food, Environment and Economic Dynamics. Wednesday, June 25, 2014. Climate change adaptation in crop production: Beware of illusions". Subscribe to: Post Comments (Atom). We are an interdisciplinary group working cooperatively to understand the relationship between society and the environment. We examine regional and global scale phenomena using statistical analyses of real world data. Greed, Green and Grains. Payments for environmental services. Useful links; unsolicited recommendations. Do journ...
G-FEED: Are yields becoming less or more sensitive to temperature?
http://www.g-feed.com/2013/04/are-yields-becoming-less-or-more.html
Global Food, Environment and Economic Dynamics. Thursday, April 4, 2013. Are yields becoming less or more sensitive to temperature? Third, this is potentially a VERY scale dependent question. Yield at a national scale, for example, can change for a lot of reasons apart from a change in yield variability for individual fields. For example, work by PeterHazell 30 years ago. Finally, there is increased atmospheric CO. Which one would expect to lower impacts of droughts by improving water use efficiency.
G-FEED: For your weekend viewing pleasure
http://www.g-feed.com/2015/02/for-your-weekend-viewing-pleasure.html
Global Food, Environment and Economic Dynamics. Friday, February 20, 2015. For your weekend viewing pleasure. In case you somehow happened to miss yesterday's "Hadoop World Conference" in San Jose, we bring you the following video of GFEED's own Sol Hsiang - who despite looking very sharp in his suit earpiece/headset thingy, conspicuously fails to use the word "hadoop", and conspicuously fails to get introduced by Obama, as the speaker before him. What does hadoop mean. Subscribe to: Post Comments (Atom).
G-FEED: Siestas and climate change
http://www.g-feed.com/2015/02/siestas-and-climate-change.html
Global Food, Environment and Economic Dynamics. Monday, February 16, 2015. Siestas and climate change. By Vincent Vadez and colleagues discusses some of the ways crop scientists are selecting for this trait. As I’ve mentioned in past posts, it’s a strategy we are trying to evaluate as a possible adaptation to climate change. It probably helps a little, but it’s not clear how much. Overall, maybe the lesson here is the corollary of what Marshall blogged about a few months ago. Greed, Green and Grains.
G-FEED: Crop Insurance and the Disincentive to Adapt to Extreme Heat
http://www.g-feed.com/2015/02/crop-insurance-and-disincentive-to.html
Global Food, Environment and Economic Dynamics. Tuesday, February 10, 2015. Crop Insurance and the Disincentive to Adapt to Extreme Heat. The fraction of total crop insurance premiums that is subsidized by the government greatly increased between 1981-2013, especially following the 1994 Crop Insurance Reform Act as shown in the following graph. Subsidy ratios increased from 20% in the early 1980s to 60% in recent years for both corn and soybeans. Finally, we interact the weather measures with the fractio...
G-FEED: Measuring yields from space
http://www.g-feed.com/2015/02/measuring-yields-from-space.html
Global Food, Environment and Economic Dynamics. Wednesday, February 11, 2015. Measuring yields from space. This post is co-written with Florence Kondylis at the World Bank, and a similar version was also posted over at the World Bank's Development Impact blog. One morning last August a number of economists, engineers, Silicon Valley players, donors, and policymakers met on the UC-Berkeley campus to discuss frontier topics in measuring development outcomes. The idea behind the event. 8211; could hold part...
equality – iHarvest
https://iharvestblog.com/tag/equality
Barrett Kirwan’s Homepage. Economics, Agriculture, and More. The Effect of U.S. Agricultural Subsidies on Equality. December 23, 2014. Follow me on social media. View barrett.kirwan’s profile on Facebook. View @barrettkirwan’s profile on Twitter. View barrett-kirwan-5733516’s profile on LinkedIn. G-FEED: Risk Aversion in Science bit.ly/2bNJ8Jt. Trump doc clarifies: his condition is better than the CURRENT health of past. ln.is/yPOeD. Greed, Green, and Grains. Marc F. Bellemare. Greed, Green, and Grains.
G-FEED: A flood of crop data, and a study on drought
http://www.g-feed.com/2014/05/a-flood-of-crop-data-and-study-on.html
Global Food, Environment and Economic Dynamics. Thursday, May 1, 2014. A flood of crop data, and a study on drought. As the growing season gets under way in the Midwest, we have a paper out today in Science on yield trends in the region, and the role of drought. The paper is here. And a summary story here. I'll also post a link asap to a pdf for those without access to Science here. There's also a very nice companion piece by Don Ort and Steve Long here. The paper relates to this post a while back. We ar...
G-FEED: Discounting Climate Change Under Secular Stagnation
http://www.g-feed.com/2015/04/discounting-climate-change-under.html
Global Food, Environment and Economic Dynamics. Wednesday, April 1, 2015. Discounting Climate Change Under Secular Stagnation. Ben Bernanke, recent former Chair of the Federal Reserve, has a new blog. And he's writing about low interest rates and so-called secular stagnation, a pre-WWII phrase recently resurrected by Larry Summers. The topic is dismal- hey, they're economists! I generally agree with the. Recent critique of secular stagnation by Jim Hamilton, Ethan Harris, Jan Hatzius, and Kenneth West.
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Sunday, August 3, 2014. 2014 - colder and slightly wetter than average US growing conditions. Futures prices for corn have been decreasing a lot - for example the December 2014 contract for corn has decreased by more than 25% between the beginning of May and the beginning of August ( chart of CME. Indicating that the market either anticipates increased supply or a drop in demand, likely the former. Maybe good weather will be giving the US, which produces 40% of the world's corn a bumper crop. Cross-valid...
Wolfram Schlenker
Wolfram Schmidt | Wolfram Schmidt - Fotografie und Webdesign
Willkommen bei Wolfram Schmidt. Willkommen auf meiner digitalen Präsenz, wie man hier unschwer erkennen wird, bin ich unter anderem im Bereich Neue Medien, Fotodesign. Auf diesen Seiten stelle ich gelegentlich einige Projekte und Arbeiten aus den Bereichen Webdesign und Fotografie, Kunst sowie Multimedia vor. Grundschule Mülheim / Mosel. Update: 19-06-2015 Wolfram Schmidt.
Cazani - The World of Lifestyle
Erst seit kurzer Zeit setzt man dieses außergewöhnliche Metall für die Herstellung von Schmuck ein. Durch seine besonderen Eigenschaften und seinen kühlen Spiegelglanz kann man aus Wolframlegierungen wundervoll glänzenden Schmuck erschaffen, der für die Ewigkeit funkelt. Mit 3422°C hat Wolfram die höchste Schmelztemperatur aller Metalle. Die Bearbeitung von Wolframcarbid ist nur mit Diamantwerkzeugen und Lasertechnik möglich. Besuchen Sie uns noch heute. What´s Tungsten jewelry? His extreme scratch resis...
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