Climate, Human Comfort and Urban Spaces

Good news.. here's what we discovered .. new soft-wares to aid our design!...
first one..Ecotect: analyzes the performance of a built form with respect to day-lighting, natural ventilation etc. It can also do analysis on urban scale, simulating solar access on streets and facades, wind movement patters and possibly view shed analysis. 
second one : Climate Consultant that can give us all climate related data with respect to human comfort zone and corresponding design guidelines.

We have split up for two different tasks; physical modeling and digital modeling.
One task is to model the solar envelope of the proposed project.Scanning Bosselmann report for Toronto 1990(found on UCLA website) reveals how sun and wind conditions effect human comfort in urban spaces and how built form needs to be regulated to achieve optimum micro climates on streets and in parks. This is done with design of urban form sensitive to solar access and wind movement. Hence its important that we know the sun and wind movement patterns and analyze their role in our design. The task to understand the solar movement in the sky and finding the plane of solar radiation that will give us the required amount of sunlight hours in urban spaces, took me through several geometrical calculations,diagrams and a mock model of sun's path before i could grasp it.
Following is the sketch of study conditions to analyze solar access taking form from the study:
1.chosen time period of the day 11am to 2 pm, 11 am to 4pm and 10 am to 5 pm respt.
2.chosen time of year; spring(3/21) /fall(9/23) equinox and probably winter solstice 12/21
3. plane where solar access desired; streets/parks/facades
Below is a diagram for solar envelope for blocks adjacent to Keating channel promenade. This allows for solar access for min 3hrs to all streets, 5 hrs to streets with retail and 7 hrs to parks (based on Keating channel report).