Clone pannirbrof Biogas to Energy | Insight Maker  https://insightmaker.com/insight/114792/Clone-pannirbrof-Biogas-to-Energy  Simple mass balance model for lakes, based on the Vollenweider equation: dMw/dt = Min - sMw - Mout The model was first used in the 1960s to determine the phosphorus conce
Lakes And Reservoirs Eutrophication Environment
Clone pannirbrof Biogas to Energy | Insight Maker https://insightmaker.com/insight/114792/Clone-pannirbrof-Biogas-to-Energy 
Simple mass balance model for lakes, based on the Vollenweider equation:

dMw/dt = Min - sMw - Mout

The model was first used in the 1960s to determine the phosphorus concentration in lakes and reservoirs, for eutrophication assessment.


Ecocity model , Joanna 

mass balace of biodigestor eco city technology process
Pagandai V Pannir Selvam
Simple modern carbon cycle model for use in virtual education modules.
Geology Nutrient Cycle Environment Virtual Learning Climate Change Education
Simple modern carbon cycle model for use in virtual education modules.
Carbon Cycle
Brenden J Fischer-Femal
Our final beer game!
Beer Game Environment
Our final beer game!
Beer Game Verweij, Lufen, Rmk, Cerniauskaite
team123
5
Food Web
Environment
Food Web
Mariana Trench Food Web
Jack Tong
Diagrams modified from  article
CMO Inequality Disparities Urban Social Health Care Environment Realist
Diagrams modified from article
Urban renewal and health inequality
Geoff McDonnell
for more information, contact Dr. Ann Stapleton at: stapletona@uncw.edu Description: A simple model for breeding plants from generation to generation, with one "yield" variable (e.g. height) and 4 combinations of plants from the parents. Simulation tracks the frequencies of each combination
Environment Plants Biology Breeding
for more information, contact Dr. Ann Stapleton at: stapletona@uncw.edu

Description:

A simple model for breeding plants from generation to generation, with one "yield" variable (e.g. height) and 4 combinations of plants from the parents. Simulation tracks the frequencies of each combination in each generation as well as the overall average height by generation.

Adjust all sliders before beginning simulation. Make sure the A1A2 parameters are equal to the A2A1 parameters.
Plant Breeding Simulation
Austin Gratton
Collapse of the economy, not just recession, is now very likely. To give just one possible cause, in the U.S. the fracking industry is in deep trouble. It is not only that most fracking companies have never achieved a free cash flow (made a profit) since the fracking boom started in 2008, but th
Climate Heating Public Health COVID-19 Environment
Collapse of the economy, not just recession, is now very likely. To give just one possible cause, in the U.S. the fracking industry is in deep trouble. It is not only that most fracking companies have never achieved a free cash flow (made a profit) since the fracking boom started in 2008, but that  an already very weak  and unprofitable oil industry cannot cope with extremely low oil prices. The result will be the imminent collapse of the industry. However, when the fracking industry collapses in the US, so will the American economy – and by extension, probably, the rest of the world economy. To grasp a second and far more serious threat it is vital to understand the phenomenon of ‘Global Dimming’. Industrial activity not only produces greenhouse gases, but emits also sulphur dioxide which converts to reflective sulphate aerosols in the atmosphere. Sulphate aerosols act like little mirrors that reflect sunlight back into space, cooling the atmosphere. But when economic activity stops, these aerosols (unlike carbon dioxide) drop out of the atmosphere, adding perhaps as much as 1° C to global average temperatures. This can happen in a very short period time, and when it does mankind will be bereft of any means to mitigate the furious onslaught of an out-of-control and merciless climate. The data and the unrelenting dynamic of the viral pandemic paint bleak picture.  As events unfold in the next few months,  we may discover that it is too late to act,  that our reign on this planet has, indeed,  come to an abrupt end?  
Covid 19 - irreversible and catastrophic consequences
Hanns-Jürgen Hodann
5 9 months ago
Insight diagram
Environment Books
Clone of HarperCollins - Supply Chain Group Verweij,
Daniel Verweij
DRAFT conceptual model of climate change connections in Yamuna river project.
Climate Change Carbon Environment
DRAFT conceptual model of climate change connections in Yamuna river project.
Yamuna River Restoration and Climate Change With MSW
Spencer Phillips
11
Insight diagram
Environment Ocean
Näringsväv havsvik
Sofia Henriksson
The time-variable solution to a step-function change in inflow concentration for an ideal, completely mixed lake.
Environment Chemistry
The time-variable solution to a step-function change in inflow concentration for an ideal, completely mixed lake.
Clone of ENVE 431 - HW5 - PROBLEM 7
Bridgette M Medeghini
Simple model to illustrate Michaelis-Menten equation for nutrient uptake by phytoplankton. The equation is: P = Ppot S / (Ks + S) Where: P: Nutrient-limited production (e.g. d-1, or mg C m-2 d-1) Ppot: Potential production (same units as P) S: Nutrient concentation (e.g. umol N L-1) Ks: Half sat
Primary Production Environment Nutrients
Simple model to illustrate Michaelis-Menten equation for nutrient uptake by phytoplankton.

The equation is:

P = Ppot S / (Ks + S)

Where:

P: Nutrient-limited production (e.g. d-1, or mg C m-2 d-1)
Ppot: Potential production (same units as P)
S: Nutrient concentation (e.g. umol N L-1)
Ks: Half saturation constant for nutrient (same units as S)

The model contains no state variables, just illustrates the rate of production, by making the value of S equal to the timestep (in days). Move the slider to the left for more pronounced hyperbolic response, to the right for linear response.
Clone of Phyto 2 - Michaelis-Menten curve for phytoplankton
Pagandai V Pannir Selvam
Insight diagram
Environment Books
Clone of HarperCollins - Supply Chain Group Verweij,
Daniel Verweij
Simple model of the global economy, the global carbon cycle, and planetary energy balance. The planetary energy balance model is a two-box model, with shallow and deep ocean heat reservoirs. The carbon cycle model is a 4-box model, with the atmosphere, shallow ocean, deep ocean, and terrestrial c
Environment
Simple model of the global economy, the global carbon cycle, and planetary energy balance.

The planetary energy balance model is a two-box model, with shallow and deep ocean heat reservoirs. The carbon cycle model is a 4-box model, with the atmosphere, shallow ocean, deep ocean, and terrestrial carbon. 

The economic model is based on the Kaya identity, which decomposes CO2 emissions into population, GDP/capita, energy intensity of GDP, and carbon intensity of energy. It allows for temperature-related climate damages to both GDP and the growth rate of GDP.

This model was originally created by Bob Kopp - https://insightmaker.com/user/16029 (Rutgers University) in support of the SESYNC Climate Learning Project.

Steve Conrad (Simon Fraser University) modified the model to include emission/development/and carbon targets for the use by ENV 221.
REM 221 Simple Climate-Carbon-Economic Model with Targets
Steve Conrad
28
Primary production model with phytoplankton as a state variable, force by light and nutrients. Model expanded to include bivalves.
Phytoplankton Environment Bivalves
Primary production model with phytoplankton as a state variable, force by light and nutrients. Model expanded to include bivalves.
PhytOster 3
Cátia Ferreira
3
For Sustainability & Eco Innovation class
Sports Environment
For Sustainability & Eco Innovation class
The Olympics Stock & Flow + Stakeholders
Michaela Day
Tomado de: Modeling forest succession in a northeast deciduous forest. Modificado para Bosque Subtropical
Environment Ecology Succession
Tomado de: Modeling forest succession in a northeast deciduous forest.
Modificado para Bosque Subtropical
Sucesión Forestal
Denny S. Fernandez del Viso
4
FORCED GROWTH GROWTH GOES INTO TURBULENT CHAOTIC DESTRUCTION   BEWARE pushing increased growth blows the system! (governments are trying to push growth on already unstable systems !) The existing global capitalistic growth paradigm is totally flawed The chaotic turbulence is the result of th
Strategy Weather Environment MTBF BIFURCATIONS Growth Economics Finance Mathematics Population Demographics Science Navier Stokes Physics Engineering TURBULENCE Chaos Fractals Biology Health
FORCED GROWTH GROWTH GOES INTO TURBULENT CHAOTIC DESTRUCTION 
 BEWARE pushing increased growth blows the system!
(governments are trying to push growth on already unstable systems !)

The existing global capitalistic growth paradigm is totally flawed

The chaotic turbulence is the result of the concept and flawed strategy of infinite bigness this has been the destructive influence on all empires and now shown up by Feigenbaum numbers and Dunbar numbers for neural netwoirks

See Guy Lakeman Bubble Theory for more details on keeping systems within finite limited size working capacity containers (villages communities)

FORCED GROWTH INTO TURBULENCE
Guy Lakeman
5
How the 4-H club became a marketing thingy for DuPont
Environment 4-H Economy Africa
How the 4-H club became a marketing thingy for DuPont
4-H impact on African Farming
Nautk
The time-variable solution to a step-function change in inflow concentration for an ideal, completely mixed lake.
Chemistry Environment
The time-variable solution to a step-function change in inflow concentration for an ideal, completely mixed lake.
Clone of Clone of ENVE 431 - HW5 - PROBLEM 7
Christian Papineau
This story presents a conceptual model of nitrogen cycling in a dune-lake system in the Northland region of New Zealand. It is based on the concept of a stock and flow diagram. Each orange ellipse represents an input, while each blue box represents a stock. Each arrow represents a flow. A flow invo
Lake Environment Management Nutrient Cycling Leaching

This story presents a conceptual model of nitrogen cycling in a dune-lake system in the Northland region of New Zealand. It is based on the concept of a stock and flow diagram. Each orange ellipse represents an input, while each blue box represents a stock. Each arrow represents a flow. A flow involves a loss from the stock at which it starts and an addition to the stock at which it ends.

Story of nitrogen dynamics in a shallow lake
Graeme Doole
6
THE 2017 MODEL (BY GUY LAKEMAN) EMPHASIZES THE PEAK IN POLLUTION BEING CREATED BY OVERPOPULATION WITH THE CARRYING CAPACITY OF ARABLE LAND NOW BEING 1.5 TIMES OVER A SUSTAINABLE FUTURE (PASSED IN 1990) AND NOW INCREASING IN LOSS OF HUMAN SUSTAINABILITY DUE TO SEA RISE AND EXTREME GLOBAL WATER REL
Drought Transport Silicene Graphene Resource Solar Nuclear Energy Food Agriculture Cyclone Tornado Typhoon Hurricane Loss Flood Animals Plants Fish Sea Ocean Yield Regeneration Pollution Lifetime Rural Industrial Urban Labor Jobs Land Resources Services Health Fertility Politics Economics Strategy Engineering Technology Science Mortality Death Failure Climate Weather Population Population Growth Demographics Environment

THE 2017 MODEL (BY GUY LAKEMAN) EMPHASIZES THE PEAK IN POLLUTION BEING CREATED BY OVERPOPULATION WITH THE CARRYING CAPACITY OF ARABLE LAND NOW BEING 1.5 TIMES OVER A SUSTAINABLE FUTURE (PASSED IN 1990) AND NOW INCREASING IN LOSS OF HUMAN SUSTAINABILITY DUE TO SEA RISE AND EXTREME GLOBAL WATER RELOCATION IN WEATHER CHANGES IN FLOODS AND DROUGHTS AND EXTENDED TROPICAL AND HORSE LATTITUDE CYCLONE ACTIVITY AROUND HADLEY CELLS

THE MODEL IS ZONE SPECIFIC AS GLOBAL WEATHER IS NOT HOMOGENEOUS BUT A COLLECTION OF HEAT BUMBPS DEPENDENT ON POPULATION SIZE OF URBAN HEAT ISLANDS AND MASSED CONURBATIONS AND AGGLOMERATIONS 

The World3 model is a detailed simulation of human population growth from 1900 into the future. It includes many environmental and demographic factors.

THIS MODEL BY GUY LAKEMAN, FROM METRICS OBTAINED USING A MORE COMPREHENSIVE VENSIM SOFTWARE MODEL, SHOWS CURRENT CONDITIONS CREATED BY THE LATEST WEATHER EXTREMES AND LOSS OF ARABLE LAND BY THE  ALBEDO EFECT MELTING THE POLAR CAPS TOGETHER WITH NORTHERN JETSTREAM SHIFT NORTHWARDS, AND A NECESSITY TO ACT BEFORE THERE IS HUGE SUFFERING.
BY SETTING THE NEW ECOLOGICAL POLICIES TO 2015 WE CAN SEE THAT SOME POPULATIONS CAN BE SAVED BUT CITIES WILL SUFFER MOST. 
CURRENT MARKET SATURATION PLATEAU OF SOLID PRODUCTS AND BEHAVIORAL SINK FACTORS ARE ALSO ADDED

Use the sliders to experiment with the initial amount of non-renewable resources to see how these affect the simulation. Does increasing the amount of non-renewable resources (which could occur through the development of better exploration technologies) improve our future? Also, experiment with the start date of a low birth-rate, environmentally focused policy.

2017 Weather & Climate Extreme Loss of Arable Land and Ocean Fertility by Guy Lakeman - The World3+ Model: Forecaster
Guy Lakeman
32
Simple (Kind of) food web of the Cane Toad Species. Includes different levels of consumers including predators.
Cane Toad Animal Species FoodWeb Food Environment
Simple (Kind of) food web of the Cane Toad Species. Includes different levels of consumers including predators.
Clone of Cane Toad Food Web
Stephanie
The time-variable solution to a step-function change in inflow concentration for an ideal, completely mixed lake.
Environment Chemistry
The time-variable solution to a step-function change in inflow concentration for an ideal, completely mixed lake.
ENVE 431 - HW5 - PROBLEM 7
Logan Adams
5