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Photography

Photography and weather

Some cloud families

Cumuliform clouds add energy to any photo. Even photos in black and white benefit from them largely, whether it is for a normal or an HDR photo.

Cumuliform clouds add dynamism to this Abbaye du Mont St-Michel scenery. France (1978)
Cumuliform clouds add dynamism to this Abbaye du Mont St-Michel scenery. France (1978)
Black and white HDR picture of lamp posts installed along the St-Lawrence, Quebec City 2012.
Black and white HDR picture of lamp posts installed along the St-Lawrence, Quebec City 2012.

The stratiform clouds add to the tranquillity and the stability of a photo.

Daytona Beach under stratus clouds in 2011. The end of the afternoon allows the fresh air from the sea to move over the heated land, which helps create few cumulus fractus, visible near the buildings.
Daytona Beach under stratus clouds in 2011. The end of the afternoon allows the fresh air from the sea to move over the heated land, which helps create few cumulus fractus, visible near the buildings.

Clouds including a stratiform and cumuliform components (stratocumulus) produce an effect that is more energizing than the simple stratus, while avoiding the explosion of energy of the cumuliform clouds.

A stratocumulus adds to this otherwise peaceful scenery captured on board the Lyria train between Paris and Geneva in 2013.
A stratocumulus adds to this otherwise peaceful scenery captured on board the Lyria train between Paris and Geneva in 2013.

The cold front

The approach of a cold front enhances the possibility of interesting photos. If it is a fast moving cold front of moist and unstable air, the photos will probably be more spectacular, as some thunderstorms will be associated with the system. A dew point of more than 15 C indicates the presence of a lot of water vapor which can be transformed into precipitation, thus releasing a lot of energy. When these conditions are combined with a really strong contrast between the new air mass which approaches and the one which goes away, the produced meteorological phenomena will certainly be intense.

In the photos below, the meteorological system approaching the Quebec Jean-Lesage international airport also had to cross a small mountain range.

A roll arcus cloud in development ahead of a thunderstorm approaching the Quebec Jean-Lesage airport in 2012.
A roll arcus cloud in development ahead of a thunderstorm approaching the Quebec Jean-Lesage airport in 2012.
A roll arcus cloud in development ahead of a thunderstorm approaching the Quebec Jean-Lesage airport in 2012.
A roll arcus cloud in development ahead of a thunderstorm approaching the Quebec Jean-Lesage airport in 2012.
View under a developing arcus cloud at the Quebec Jean-Lesage international airport (2012)
View under a developing arcus cloud at the Quebec Jean-Lesage international airport (2012)
An arcus cloud ahead of a thunderstorm approaching the Quebec Jean-Lesage airport in 2012
An arcus cloud ahead of a thunderstorm approaching the Quebec Jean-Lesage airport in 2012
A roll arcus cloud ahead of a thunderstorm heading for Quebec City in 2012
A roll arcus cloud ahead of a thunderstorm heading for Quebec City in 2012

The morning fog

The morning fog offers many opportunities for interesting photos. You can choose an isolated tree and capture the combined effects of the morning sun and fog. Or you may choose a cluster of trees, for a completely different effect. Both photos below were taken in Domaine Cataraqui, Quebec City.

Trees in fog at Domaine Cataraqui, Quebec City 2009
Trees in fog at Domaine Cataraqui, Quebec City 2009
Sun and fog provide for a special atmosphere at the Domaine Cataraqui, Quebec City 2009
Sun and fog provide for a special atmosphere at the Domaine Cataraqui, Quebec City 2009

A morning fog resulting from a cold cloudless night will persist for hours if there is no wind. The cold morning air, motionless over a slightly hotter stretch of water, creates a fog that will finally disappear just before noon, when the atmosphere has been heated enough. If there had been an overcast sky during the night, chances are that the air over the water would have remained at a higher temperature, preventing the formation of fog.

The opportunities for more interesting photos arise when you witness the first holes in the fog layer.

The Ocean tugboats during a dense fog in the Bassin Louise in Quebec (2012).
The Ocean tugboats during a dense fog in the Bassin Louise in Quebec (2012).

We can take into account the season to estimate the speed of the diurnal reheating of the lower atmosphere. A morning fog will need more time to dissipate from late autumn to early spring: that leaves more time for the photographer to prepare. The forecasts can announce the disappearance of fog while it will not be the case if, over your sector, there is an invading layer of stratocumulus preventing the morning sun from reaching the ground.

To determine if the fog is going to dissipate as expected or will remain and possibly intensify, watch the difference between the temperature and the dew point on the hourly meteorological observations issued by weather stations near your place of residence. If the temperature and dew point spread increases, the fog is going to lift. If the difference between those two decreases, the fog is going to persist and possibly intensify.

The mist

The mist can be qualified as such when the visibility is superior to ½ mile, but do not exceed 6 miles for an observer on the ground. If the visibility is of ½ mile or less, it is called fog. This photo of the Bic National Park, near Rimouski, shows the interesting effect that the mist adds to a beautiful landscape.

Mist in the Bic National Park, Province of Quebec (2009)
Mist in the Bic National Park, Province of Quebec (2009)

Hot and unstable air in winter

When there is a warm and unstable air advection (about 0 degrees) while winter has already settled, there are good opportunities for photos. A moderately developed cumulus produces significant snow showers and this snow sticks on all the surrounding objects. All that snow would have begun to melt on contact of objects if the latter had had a temperature superior to zero degree. But, the winter being already settled, the snow persists. It gives enough time to capture some souvenirs.

A Quebec City street after a snow shower
A Quebec City street after a snow shower

The local effects

A photographer might benefit from learning about the meteorological local effects influencing the regions he intends to visit. The local effects are often simple to understand and they repeat themselves regularly, according to wind and season changes. The knowledge of these effects allows the photographer to be ready and position himself even before the phenomenon occurs. It limits the comments like: “If I had known that it would occur, I would have settled down here one hour earlier!

The local terrain as well as large size bodies of water produce predictable meteorological phenomenon that can be used by a well prepared photographer. It can consist of persistent fog, repetitive snowstorms over a small sector, strong winds, cumuliform clouds alongside the mountain summits, etc. By being positioned at the right place, at the right time, the desired photo can be realized.

A change in the wind direction

A change in the wind direction suddenly increases the opportunities of interesting photos. It might announce the approach of a cold front, a warm front, a sea or land breeze, etc. In the photo below, a bit of fresher air suddenly began crossing the St-Lawrence seaway at the end of the day, thanks to the approach of a weak cold front. The water was still relatively warm and the moisture which was present over the surface became visible due to the cool air supply. The conditions were now ideal for a short-term thin fog, as long as the wind speed would not increase. Just in time for a photo.

The new wood pellets silos in Anse au Foulon in Quebec City en 2014
The new wood pellets silos in Anse au Foulon in Quebec City en 2014

Familiarization with weather radars

It can be useful to get acquainted with weather radars which, for the needs of photography, remain simple to interpret. Multiple echoes of small dimension with a steep gradient of various colors indicate precipitation resulting from cumuliform clouds. The showers associated with these clouds are often moderated or strong and will be the result of approaching towering cumulus or cumulonimbus (thunderstorms). A towering cumulus presents a dark base and a white summit to the photographer. At sunset, their vertical development can be used to emphasize the last rays of light.

The side of a towering cumulus (TCU) is benefiting from the remaining sunlight over Quebec
The side of a towering cumulus (TCU) is benefiting from the remaining sunlight over Quebec

Large echo areas of similar colors of low intensity indicate a relatively stable air generally producing steady light rain or drizzle. This should be understood as a possibility of increased humidity limiting the visibility through mist or fog.

Hoar frost

Hoar frost is a short-term phenomenon. It is thus necessary to capture the scene before the sun melts everything. The photo below shows some small twigs on which hoar frost has settled. It was taken at the beginning of the seventies. Although the quality of the photo is not exceptional, the meteorological phenomenon is well demonstrated.

A combination of snow and hoar frost observed on a Quebec field in 1976.
A combination of snow and hoar frost observed on a Quebec field in 1976.

Forest fires

Wishing to make photos of western Canada during summer 2014, I came up against a season where hundreds of forest fires were raging. The smoke was covering some parts of Alberta and British Columbia. Some fires were important enough to require the closure of the sole highway connecting Lake Louise to Jasper. I thus decided to include the effects of those fires in the holiday souvenirs.

A visibility reduced in forest fire smoke allows a photographer to obtain, without special editing, sunsets with interesting colors.

Sunset and smoke from forest fires in Kamloops in 2014
Sunset and smoke from forest fires in Kamloops in 2014

The smoke also produces an effect similar as fog, but a fog which would be impossible to obtain at the end of a summer afternoon while the sun shines and there is a 38 degrees Celsius temperature.

An area near Kamloops, Canada, that was touched by forest fires in 2014
An area near Kamloops, Canada, that was touched by forest fires in 2014

At dusk, the residual smoke is visible near tree tops while the setting sun strikes the mountain side. The effect is of two horizontal lines of complementary colors, blue and orange.

Forest fire smoke and sunset combined in Lake Louise, Alberta en 2014
Forest fire smoke and sunset combined in Lake Louise, Alberta en 2014

Metar decode and description

Metar Decode and Description
Metar Decode and Description

Significant Present Weather Codes

Significant Present Weather Codes
Significant Present Weather Codes
Categories
Photography

Bad weather in Quebec

A violent storm is approaching the Quebec Jean-Lesage airport in 2012
A roll arcus cloud in development ahead of a thunderstorm approaching Quebec in 2012

In the “Improve your pictures” section of this web site, there is a page titled “Photography and weather” . In few days, this page will hold about twenty pictures and information that can help photographers profit from the best that nature has to offer. The picture above represents a roll arcus cloud in development that is preceding a violent thunderstorm that was approaching Quebec City in 2012. The most interesting clouds were formed as the system was moving over the Val-Bélair hills near the airport.

The photo was taken with a Canon 5D MKII

Categories
Real life stories as pilot and FSS: learning how to fly

The flight from St-Jean-sur-Richelieu, Québec, to Edmonton, Alberta in 1981

(Precedent story: unexpected thunderstorm cells)

After a proficiency check, I soon find myself flying a Cessna 170B (tail wheel) on a flight across Canada, from St -Jean-sur- Richelieu, Quebec, to Edmonton, Alberta. I am accompanied by the aircraft’s owner who has not yet completed his private pilot course. The 1952 Cessna flies well, but has absolutely no instruments for air navigation, not even a VOR nor ADF. And the era of the portable GPS is not yet upon us.

Fourteen 1:500,000 VFR charts, covering the planned flight, are folded, glued and numbered. I trace the expected flight path on each chart, with 10 miles landmarks. This will facilitate the monitoring of our progress, considering the absence of navigation equipment. The preparation now completed, the take off is done on a beautiful summer day of 1981.

1:500,000 VFR charts used for a flight toward Edmonton, Canada, in 1981
1:500,000 VFR charts used for a flight toward Edmonton, Canada, in 1981

We do stopovers at Gatineau, North Bay, Sudbury and then fly along Lake Superior to Wawa.

Small break in Sudbury on a VFR flight to Edmonton in 1981
Small break in Sudbury on a VFR flight to Edmonton in 1981

We fly around Lake Superior to our next stopovers, Thunder Bay and Fort Frances. Over large forested areas, with no major landmarks, the gyroscopic precession must be corrected frequently so as not to stray too far from the intended track. Sometimes when it facilitates navigation, we either follow a railway or main roads. There are some instances where the westerly winds are so strong that our ground speed is slower than a car on a highway.

From Fort Frances to Kenora in 1981, with a Cessna C170B
From Fort Frances to Kenora in 1981, with a Cessna C170B

Our flight path follows a line that keeps us away from areas of high air traffic. I choose to fly north of Winnipeg terminal control area, thus avoiding frequent radio exchanges with air traffic control in a language I do not master. The underperforming radio would not be of any help at any rate. This option eventually means that we must fly over Lake Winnipeg, in its southern portion. We have enough altitude to be able to glide to the other side in case of an engine failure. Nonetheless, we realize that we are gradually loosing several thousand feet due to the cold air mass above the lake. This with maximum power applied. The unexpected descent eventually ends, but it is now impossible to have an engine failure without ditching in the lake…

The crossing of Lake Winnipeg with a Cessna C170B in 1981
The crossing of Lake Winnipeg with a Cessna C170B in 1981

Near Lundar, Manitoba, the aircraft’s old gauges indicate a significant loss of fuel. It is surprising since we refueled an hour ago. We must land the plane on the nearest runway, but the strong crosswinds exceed the capabilities of the aircraft. Nonetheless, an attempt is made with the result that only the left wheel accepts the contact with the runway. As soon as the right wheel also touches the ground, the aircraft becomes airborne again. A nearby field is selected to make a precautionary landing so that the fuel status can be verified. We fly at low altitude over the electrical wires and the cows in the adjacent field, and touch smoothly at a ground speed not exceeding 15 knots. A farmer witnesses the landing and arrives in his red pick-up to offer some help. The tanks are almost full, so the plane only needs few liters of gasoline. Once this is done, we take off westward. It appears that the old fuel gauges of this 1952 Cessna are now totally unreliable…

Landing in a field with a Cessna C170B in Lundar, Manitoba in 1981.
Landing in a field with a Cessna C170B in Lundar, Manitoba in 1981.

We leave Manitoba through Dauphin and enter Saskatchewan. If we were to experience an engine failure above such uniform fields, the risk of serious problems at landing would be virtually nonexistent.

Near Yorkton, Saskatchewan, in flight with a Cessna C170B in 1981
Near Yorkton, Saskatchewan, in flight with a Cessna C170B in 1981

The weather is slowly deteriorating. We choose to land in Watson, Saskatchewan, on the nearest runway.

The runway surface consists of muddy earth and grass, and it’s delimited by small red wooden panels. As we touch the ground, the tires splash mud everywhere, including under the wings.

The Watson runway, Saskatchewan, in 1981
The Watson runway, Saskatchewan, in 1981
The King George motel in Watson, Saskatchewan in 1981
The King George motel in Watson, Saskatchewan in 1981

Finally, the weather improves and a takeoff is made toward North Battleford, the last stop before Edmonton. The sloping terrain forces us to fly lower and lower near Edmonton, under an overcast stratocumulus, limiting our ability to see a long time in advance the correct airport from the three available (international, civil , military ). Luckily, everything goes well in choosing the right airport and approach, but we cannot say the same with radio communications. The sound quality coming from the old speaker is awful and the English spoken by the air traffic controller too fast for us. The combination of these two factors causes the controller to repeat more than once his instructions until he finally decides to slow down and we can officially say: « Roger! »

After spending few days in Edmonton it is now time for the return flight to St-Jean. This proves to be much easier and faster because the westerly winds push the aircraft. Our ground speed is sometimes double what we had managed to get on our trip to Edmonton. The journey took us twenty-five hours to go and eighteen hours to come back.

Cessna C170B in flight over Canada, summer 1981
Cessna C170B in flight over Canada, summer 1981.
Climbing to 9,500 feet on the return leg to St-Jean-sur-Richelieu, in 1981.
Climbing to 9,500 feet on the return leg to St-Jean-sur-Richelieu, in 1981.
VFR "on top" with a Cessna C170B in 1981 over Canada
VFR “on top” with a Cessna C170B in 1981 over Canada

Over North Bay, Ontario, the weather is ideal. But we will have to land in Ottawa while waiting for thunderstorms to move away from Montreal and St-Jean-sur-Richelieu. After a total of forty- three-hours of flying time, the old Cessna 170B is landing back to St- Jean -sur- Richelieu.

(Next story: the flight instructor license)

Categories
Real life stories as pilot and FSS: learning how to fly

Unexpected thunderstorm cells.

(Precedent story: the commercial pilot license / a tire bursts on landing)

On a hot summer day of 1981, I was asked to fly a Cessna 150 to the Montreal Pierre-Elliott-Trudeau international airport to pick-up one of our flight instructors and bring him back to St-Jean-sur-Richelieu. The winds were blowing from the northwest, so runway 28 was being used. While I was in final for that runway, the air traffic controller realized that he did not have enough separation between my plane and a heavy one that was also in long final. He told me “Increase your speed, there is a Boeing 727 behind you”.

It is very easy to increase the speed of an airplane while maintaining an altitude. You just push the throttle and the speed increases. However, when the aircraft is above the threshold of the runway, it needs its specific speed to touch the ground otherwise it continues to fly until the appropriate speed for landing is reached. It seemed to me that the Cessna floated for an eternity before finally touching the runway. But it eventually worked out well and I exited the runway before an overshoot was required for the Boeing.

So I parked the aircraft near Transport Canada’s offices and waited for the instructor for about thirty minutes. Clouds were rapidly covering the sky in this late afternoon, with all the humidity and an already high temperature. When the instructor finally showed up and we proceeded with the taxiing procedure, the air traffic controller told us: “You must accept radar vectors for your departing route because of the weather.” What weather? A cold front was at work, but nothing serious was visible from our position. So close to the airport terminal, all we could see were towering cumulus, nothing else. We accepted his offer in order to be allowed to leave the airport.

The take-off was made from runway 28. I made a left turn toward St-Jean. We soon understood why radar vectors had to be followed. A storm had developed between Montreal and St-Jean. We observed what looked like five cylinders created by heavy rain. Lightning was also occasionally visible. We had to fly between the cylinders to avoid the most problematic areas. We tightened our seat belts just as the first bumps were being felt, making our altitude vary considerably. Knowing what I know today about flying in bad weather, I would not attempt another flight like this one, especially without an onboard weather radar.

The flight ended nicely with a smooth landing in St- Jean, outside of the problematic weather area. A few weeks later, I was asked if I would accept to be captain for a long flight across Canada. This unexpected offer represented a great opportunity, especially since it would allow me to log more than forty additional flying hours.

(Next story: a visual flight (VFR) from St-Jean-sur-Richelieu, Quebec, to Emonton, Alberta)

For other real life stories as a pilot, click on the following link: Real life stories as a pilot

Categories
Real life stories as pilot and FSS: learning how to fly

The commercial pilot license / a tire bursts on landing

(Precedent story: night landing on an ice rink)

The Commercial Pilot License

A few months later, I got my commercial pilot license. It was now time, as for all pilots, to accumulate flying hours in order to gain experience as captain.

I chose to accumulate hours by making short cross-country trips and offering first flights to people of all ages. The evenings were particularly popular because there was little convection and most passengers appreciated a smooth ride for their first flight in a small aircraft.

A Tire Bursts on Landing.

Despite my best intentions, there has still been an occasion where I had to perform an unusual landing. It was during a busy time for air traffic control. Many aircrafts were in the St-Jean-sur-Richelieu (CYJN) airport’s circuit pattern and the controller asked me if I could make a short landing with my Grumman Cheetah (AA-5A). He was counting on a minimal roll after the landing so that the aircraft could exit the runway as soon as possible.

All pilots know how to make a short landing. This is part of the basic training and I accepted this restriction. This can, however, be complicated by the fact that sometimes we had to fly an aircraft with particularly worn out tires. I remember (and I should not be the only one) having had to use an aircraft on which we could see the rope under what was left of the rubber sole. School aircrafts are generally safe. You just don’t want to be the one using the plane the day before the tires have to be changed…

So I began the approach toward runway 29 on a particularly hot summer day. Touchdown was smooth. I applied the brakes without blocking the wheels, while pulling on the control column at the same time that the flaps were returning to their initial position. A pilot does not block the wheels when breaking as the friction decreases and the length necessary to stop the aircraft increases.

At the same time, blocking the wheels increases the risk of loss of control of the aircraft. With these manoeuvers, my aircraft was supposed to stop quickly. However, a few seconds after landing, it started to vibrate and move to the right. I had no other choice but to apply a lot of pressure on the left brake and use full deflection on the left rudder trying to keep the aircraft centered on the runway. Nevertheless, the aircraft slowly headed toward the right side of the runway while slowing down. The landing ended with the left wheel on the runway and the right wheel in the grass.

During the last few seconds, it became obvious that I was dealing with a flat tire. The passengers were not too bothered by the incident because they only started to realize what was happening when we were almost immobilized on the grass. The tire was completely twisted but still on the wheel. Equipment failure is something a pilot knows he will have to deal with from time to time. So considering that it was part of the job, I continued to accumulate flying hours during the following weeks and months.

(Next story: unexpected thunderstorm cells)

For other real life stories as a pilot, click on the following link: Real life stories as a pilot