Simple energy balance model of a planet with albedo, ocean, and atmosphere. This simulation models the stock and flow of energy between a star, a planet’s surface (primarily its oceans, which are the largest reservoir of heat), and space.The assumptions governing this model are: 1. The planet abso
Environment
Simple energy balance model of a planet with albedo, ocean, and atmosphere.

This simulation models the stock and flow of energy between a star, a planet’s surface (primarily its oceans, which are the largest reservoir of heat), and space.The assumptions governing this model are:

1. The planet absorbs a fraction of the shortwave radiation arriving from its star, with that fraction given by (1-A), where A is albedo. 

2. The planet radiates longwave infrared radiation into space, with the amount of radiation into space given by σΤe4, where σ is the Stefan-Boltzmann constant and Te is the temperature of the effective radiating level.

3. The atmospheric lapse rate is 6 K/km.

4. If there is an imbalance between shortwave radiation absorbed and longwave radiation emitted, the imbalance affects the temperature of the planet. However, it does not do so instantaneously – the imbalance must heat or cool the mixed layer of the ocean.

5. At the start of the simulation, the planet is extremely close to equilibrium given its default parameters. If any of these parameters are changed, the planet will be out of equilibrium, and will have to adjust.

Simple Energy Balance Model
Bob Kopp
45
Insight diagram
Ecology Environment Forestry
Clone of Assignment 2_Shahrukh Kamran_HNEE
Kelly
Our computer model details the change in allele frequency of resistant mosquitoes in Africa when the government began spraying DDT. The few mosquitoes that naturally survived the chemical sprays reproduced, and created a large population of resistant mosquitoes. When DDT was sprayed later to prevent
Environment
Our computer model details the change in allele frequency of resistant mosquitoes in Africa when the government began spraying DDT. The few mosquitoes that naturally survived the chemical sprays reproduced, and created a large population of resistant mosquitoes. When DDT was sprayed later to prevent the spread of malaria, the DDT was not as effective because of the large amount of DDT-resistant phenotypes in the population.
DDT Resistance In Mosquitoes
Neha
28
A system diagram for the Mojave Desert including example socio-economic factors for an assignment at OSU- RNG 341.
FOOD WEB Desert Mojave Ecosystem Environment
A system diagram for the Mojave Desert including example socio-economic factors for an assignment at OSU- RNG 341.
Mojave Desert System Diagram with SES
Abi Wells
Insight diagram
Environment Sustainability Society Economy
Solution of Recycling Problem in Vancouver
Arman Mojtabavi
3
This model is based off Meadows economic capital with reinforcing growth loop constrained by a renewable resource model.
Business Environment
This model is based off Meadows economic capital with reinforcing growth loop constrained by a renewable resource model.
Tourism Simulator
JP Burklow
4
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
Example of ​rIsk assessment on component of the building
Environment
Example of ​rIsk assessment on component of the building
Risk Assessment
Pedro Henrique Garcia
Simple box-model of the global carbon cycle
Carbon Environment Sustainability
Simple box-model of the global carbon cycle
Clone of Global Carbon Cycle
Phil Resor
A storytelling of the nitrogen cycle. Met Nederlandse teksten
Nitrogen Nitrogen Cycle Planetary Boundary Environment Biogeochemical Cycle Ecological Ceiling
A storytelling of the nitrogen cycle.
Met Nederlandse teksten
Nitrogen Cycle - Nederlands
Henny van Dongen
A model of an infectious disease and control
Finance Health Care Disease Pandemic Environment
A model of an infectious disease and control

Clone of Disease Dynamics (Agent Based Modeling)
Dav Fem
サンプル
Environment
サンプル
樹木の成長モデル
Saki Ando
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
Primitives for Watershed modeling project. Click Clone Insight at the top right to make a copy that you can edit. The converter in this file contains precipitation for Phoenix only.
Rainwater Water Environment
Primitives for Watershed modeling project. Click Clone Insight at the top right to make a copy that you can edit.

The converter in this file contains precipitation for Phoenix only.


Group8 - Rainwater Harvesting -Phoenix ENVS 270 - Turi
Joey Turi
Interplay between wolves eating sheep and farmers killing wolves who kill deer that eat crops that feed sheep.
Farming Environment

Interplay between wolves eating sheep and farmers killing wolves who kill deer that eat crops that feed sheep.

Clone of Complex Sheep, Wolves, Deer, Crops
Magnus Persson
For Sustainability & Eco Innovation class
Sports Environment
For Sustainability & Eco Innovation class
The Olympics Stock & Flow + Stakeholders
Michaela Day
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
Ce modèle est une simulation classique du cycle de productivité dans l'océan, incluant les effets de la thermocline pour désactiver l'advection d'éléments nutritifs dissous et de détritus à la couche superficielle.   Ce modèle illustre un certain nombre de caractéristiques intéressantes notamment
Phytoplankton Ocean Environment Biogeochemistry Primary Production
Ce modèle est une simulation classique du cycle de productivité dans l'océan, incluant les effets de la thermocline pour désactiver l'advection d'éléments nutritifs dissous et de détritus à la couche superficielle.  

Ce modèle illustre un certain nombre de caractéristiques intéressantes notamment le lien de trois variables d'état dans un cycle fermé, l'utilisation du temps pour contrôler la durée de l'advection et la fonction modulus pour les données de température qui cyclent annuellement sur plusieurs années. 

Les variables d'état du modèle sont exprimées en unités d'azote (mg N m-3), et l'étalonnage est basé sur:

Baliño, B.M. 1996. Eutrophication of the North Sea, 1980-1990: An evaluation of anthropogenic nutrient inputs using a 2D phytoplankton production model. Dr. scient. thesis, University of Bergen.
 
Fransz, H.G. & Verhagen, J.H.G. 1985. Modelling Research on the Production Cycle of Phytoplankton in the Southern Bight of the Northn Sea in Relation to Riverborne Nutrient Loads. Netherlands Journal of Sea Research 19 (3/4): 241-250.

Traduction du modèle de Joao G Ferreira (https://insightmaker.com/insight/6838/NPD-model-Nutrients-Phytoplankton-Detritus)
Le modèle NPD (nutriments, phytoplancton, détritus) basé sur la productivité primaire de la Mer du Nord - CHANGEMENT TEMPERATURE 1 DEGRE
Alexia Parhas
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
Australian Desert Ecosystem Foodweb
Victoria Ke
Insight diagram
Environment
Clone of Tide pool food web
Fiona Firefly
Primitives for Watershed modeling project. Click Clone Insight at the top right to make a copy that you can edit. The converter in this file contains precipitation for Phoenix only.
Rainwater Environment Water
Primitives for Watershed modeling project. Click Clone Insight at the top right to make a copy that you can edit.

The converter in this file contains precipitation for Phoenix only.
Rainwater Harvesting
Shaun Sarvis
4
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
Students in ENVS 270 Online at the University of Arizona: please click Clone Insight at the top to make an editable copy of this model. As initially proposed by Pr. William M White of Cornell University: http://www.geo.cornell.edu/eas/education/course/descr/EAS302/302_06Lab11.pdf http://ww
Environment
Students in ENVS 270 Online at the University of Arizona: please click Clone Insight at the top to make an editable copy of this model.

As initially proposed by Pr. William M White of Cornell University:
Global Carbon Cycle - For ENVS 270 Online
Rivka Fidel
472