Joshua Tree


I photographed my first microconfluence today. You may be familiar with the Degree Confluence Project, where people take photos of  the meeting point of lines of latitude and longitude along with the story of finding it.

Charlie Loyd created the microconfluence because he wanted to take part, but all the full degree confluences near him had already been photographed. Microconfluence points (if I’m understanding him correctly) are at the meeting points of 1/100s of latitude and longitude, which are something like 2/3 mile apart. (Distances vary, of course, because the grid is on a curved surface.)

The degree confluences near Joshua Tree have also already been photographed, so I also liked the idea of microconfluences. (Plus, it reminds me of Ethan Mitchell’s blog about finding state border confluences.) Charlie was kind enough to make me a web-based app for it, so I knew one was a few blocks away. I was out on my dirt bike today and found it. I used a different app, called Altimeter, because I pay for phone and data by the datum (and pay way less per month because of it) :

photo-2

Then I realized that Charlie was talking about decimal coordinates, not the “minute-second” coordinates that Altimeter uses. Luckily, it turns out that microconfluences with minute coordinates divisible by three are also decimal microconfluences. This is from Maps With Me:

photo

And here’s the piece of dirt. The tire track on the left is the west edge of Border Avenue, a bit north of Two Mile Road. The little bush is a creosote.  Anti-climactic, you say? Maybe I should mark the spot with a monument of some sort.

photo-2

This is a long post, so first the short version. In the last year: I started working full time and am adjusting to that. I’m glad to be working towards my MFT licensure, but uncomfortable about how it pushes my relationships and other projects onto the back burner. My marriage gets better and better, despite this. The company I work for goes out of business so I get part of the summer off, and I get the exact same job (family therapist for US Marines & their families) with a new company.

And for the year ahead: I plan to continue this work, taking good care of myself, dance with Reanna every night, as promised to my friend, Tilke, in her “How to be a Real Artist” workshop, get in best shape in 5 years, and learn how to treat myself and Reanna really really well while working full time.

October: I started my year out at Farm & Wilderness, VT, staffing and teaching a really fun psychology project at Not Back to School Camp. As is traditional, I got really sick, but this time it was from a waitress in Rutland, not someone at NBTSC. I recuperated while visiting Ethan & Susannah, also in Vermont. Back in Joshua Tree, I started working out again (SERIOUS style), planted my first winter garden, fixed some electrical and plumbing problems in my trailer, and started setting up a private practice. In the process of hiring a supervisor, I found out that in California, unlike in Oregon, I cannot do my internship in a private practice. So I started looking for work in a local clinic.

Looking out over Woodward Reservoir from my cabin at Farm & Wilderness

Ethan, cataloging NBTSC lost & found in his library

The famous Quodlibetarian tub

Reanna

Reanna at Playa Del Rey

Ollie, a year ago

Ollie & Pap

Gabe, Damian & Maya on the Hwy 62 Art Tour

Trailer at sunset, looking south

November: I move into a new computer, archive my years of audio journal entries, and learn Sketchup while applying for and getting a job at Morongo Basin Mental Health: providing free, confidential therapy for US Marines, veterans, and their families. In what would become a series of small-town coincidences, a high school friend I hadn’t seen in decades worked there, saw my name on the interview list and sat in on my interview, interjecting stuff like, “Oh, yeah, good answer!” Nice way to interview. The manager of the military program assured me that the our contract was solid for at least two years. That’s about how long I need to get my hours for licensure, so the job sounded good–no chance of having to ditch my clients like I had to in grad school! I spent the rest of the month getting in as much time with Reanna and my family before starting full time work.

Rainbow over the Bartlet Mts

Maya & Ollie in hammock

Ollie helps Nana Honey cook

Me & Reanna

December:  My 93 year old Grandpa Bob gets really sick, and I get really sick taking care of him. I was pretty sure he was going to die. He had pneumonia and had to go on antibiotics for the first time in his life. It took me weeks to fully recover. He eventually recovered, too, but I’m not sure he’ll ever fully recover. He’s been on antibiotics off and on ever since and is progressively less mobile. It’s got me thinking a lot about dying–how I can support the people I love when they start having a hard time taking care of themselves, and how I want to die when my time comes.

I start at MBMH, reading 40 hours a week of protocols. I have Christmas with family in Joshua Tree. My brother Damian starts a weekly evening with family, listening to an integral Christianity lecture and meditation that turns out to be a presentation of integral theory to Christians, rather than Christianity to integral thinkers, but valuable nonetheless.

Reanna & Christina, Xmas

Reanna & Maya, Xmas

Ely, Christina, Pap, Ben, Rebeca, Xmas

Gabe, Ely, Ollie, Christina, Xmas

Reanna, ukulele, heater

Ollie, bundled up

January: I get my first paid vacation ever–one week off, fully paid by MBMH. Weird, pretty nice. I write my first attempt at a comprehensive political statement. Reanna and I start a three-month experiment with a strict “paleo” diet, which mostly means we cut out sugar and grains from our diet. The theory is that human adaptation to grains and refined anything is shallow at best. I also start cooking Mexican food (the paleo-friendly recipes) from Rick Bayless’ Authentic Mexican. I love it. And Reanna loves eating it. I start learning to play Reanna’s ukulele. I play and sing “Amazing Grace” most nights for a month. Fun!

I’m working full time, which I’ve never done. It’s not my favorite schedule. I had to let go of most of my projects. I started building a solar batch water heater in the fall, for example, that is still not finished. The schedule has simplified my life quite a bit. Work all day, spend the evening with Reanna. I gained more respect for my friends who’ve been working full time for decades and still manage to write some music or read books. I’m ramping into a caseload, though, and am seeing seven clients a week by the end of the month.

My endurance training is going great by this point. Mid month I got my heart rate up to 179 bpm without hurting myself. Very exciting.

Smiley and Gallant visit

Reanna in our clean, cold kitchen

Dinner’s almost ready. (Photo by Reanna.)

Grandpa Bob turns 94

Me in therapist costume, with Ollie. (Photo by Reanna.)

February: Full time work continues. I get trained in the Trauma Resiliency Model, which I find very cool and useful. I re-up the trademark on Abandon Ship. I feel sad that I can’t write music with my brothers right now, but have plenty of optimistic plans to do so… Reanna starts designing our future house, another exciting project that I have to watch from the sidelines. I love watching her get super deep into a topic like this, though. She is now the resident expert in passive-solar-optimized-very-small-house design. We start car shopping, too. We need to be independently mobile in Joshua Tree.

Trench. Hose feeding trailer finally to be buried.

Reanna & treehouse near the Mexican border

Ollie, Damian

March: I’m up to 16 clients at MBMH and I’m fighting for mastery of the intense paperwork load. The clinical work is going great. My supervisor is good, I am fully engaged by my clients, and I get to see a good variety of folks–kids, adults, families, couples. The paperwork is fairly unpleasant, though. Mental health providers that get government funding spend a huge amount of time and energy creating and maintaining a paper trail for their work. These clinics get paid based on the work they claim to have done and then various agencies can audit their files and take that money back if a box wasn’t checked or a T wasn’t crossed. I spend my first very late day at work in March, trying to catch up on paperwork. Reanna is not happy.

Highlights: A great lecture by Bruce Perry, planting my first spring/summer garden, endurance training going great (I work out during my lunches at MBMH), meeting the Transition Joshua Tree folks. And Reanna. Reanna is wonderful.

Lowlights: My truck fails smog and I begin what becomes an expensive debacle trying to get it to pass.  I start having sync problems with my Mac that I am still dealing with as I write. I start working on our taxes on weekends. Reanna is Canadian and that makes our taxes super complicated and somehow even though we hired a professional we ended up owing big fines.

Abandon Ship cover art, for the TM folks. Art by Tilke.

Damian & Ollie in old billy goat pen, future garden

Me, just having sunk the garden beds. (Photo by Reanna)

Reanna planting pepper starts

Ollie

Ollie & Reanna take the trash out

Ollie & Reanna rest in the hammock

April: I find out that Morongo Basin Mental Health has decided to go out of business after more than 40 years, at the end of June. That’s quite a shock and less for me than for the many decade-plus employees I work with. At home, our three months of paleo is up and I feel fine, as I have on just about every diet I’ve tried, but it clearly had not solved any of the problems we’d been tracking for the experiment. And I am sick in bed for a week for a third time this year. Reanna’s parents arrive for a month long visit. I don’t get to see them as much as I’d like, but we get in some fun events (like the Morongo Basin Conservation Association’s “Desertwise Landscape Tour” and Transition Joshua Tree’s Water Catchment Workshop), good talks, good swimming.  I get trained in sand-tray therapy by my supervisor, Richard Gray, which I find quite useful.

Reanna preps cholla buds for dinner

Family dinner at Damian & Maya’s (Damian with Bugzooka)

Doug & Kathryn up San Jacinto

May: We get a great little car, a gift from Reanna’s parents. It gets 38 mpg unless we use the AC.  At work, emotions are high and rumors are flying around. I try to avoid it as much as possible. My coworkers are mostly looking for work with great intensity. I decide that I will chill instead, concentrate on my clients, and do what I can to get my job back with whatever company picks up the military contract in the summer.  Meanwhile,  something is eating my garden. My weekends and after work time is often spent critter-proofing.

The highlight of the month by far is meeting my new nephew, Julian.

Julian in sling

Ollie in work gloves

First scorpion of a scorpion-rich year

June: I’m at 21 clients at the beginning of my last month at MBMH. The management has had me continue taking new clients but I’m starting to get nervous about it. It’s starting to look like my clients will have a significant lapse in services, and it pisses me off. I write people in charge at the county and local journalists but no-one can say how long it will take to get the military program back up and running. I know I’m fine. I can look forward to a full season working at NBTSC if things go badly. It sucks, though, that my clients are just getting dumped. It’s screwed up. I just have to set them up as best I can for the lapse and do the tons of paperwork to close their charts. Meanwhile, my co-worker, Jackie, introduces me to Candy Crush, which starts sucking up the cracks in my schedule.

Highlights: Jonathan & Ayako’s wedding in Idaho. Motorcycle safety class with Reanna. And being married to Reanna, of course.

Living room pano: Ely, Christina, Julian, Ben, Rebeca visit

Ben & Julian

North end pano from on top of Reanna’s sewing RV

Ayako & Jonathan, getting married

July: I’m unemployed again, but within two weeks I get interviewed by Pacific Clinics, the company who got the military contract that I’d been working for at MBMH. It looks like I’ll get the job based on the reputation I’d made for myself in that position. That feels good! It means I’ll miss most of NBTSC this year, too, for the first time in 14 years.

Reanna leaves for OR to do prep work for NBTSC and I delete Candy Crush from my phone so I can get some things done: install AC in our trailer, create an outside pantry, build a greywater cistern, make a front step for the trailer, get my motorcycle license, and a few other things. Satisfying. Then I fly up to OR to work the Camp Latgawa session of NBTSC.

Reanna hangs our laundry while I goof off with the camera

Cistern in progress

Julian & me

August: Finish at NBTSC (wonderful, as usual), and spend a few short days in Eugene at an NBTSC leadership summit, then back to Joshua Tree for my last week of unemployment. I completed some last-minute landscaping and plumbing projects, built a dry toilet and installed a weather station, then started training at Pacific Clinics in Arcadia.

At the end of August, Reanna got back from her travels, and we started shutting down all lights and electronics at 8pm and just hanging out until going to bed. This was lovely. We usually laid in the hammock outside, talking and looking at stars. The desert summer evenings are really, really nice. Especially with Reanna.

My advisee group, NBTSC Camp Latgawa

Ely & Julian before dinner

Reanna & Ollie, downtown Joshua Tree

September: I start making contact with clients and by the end of the month I’m back up to 7 clients. This is exciting, and it’s nice to be working with some of my old co-workers from MBMH, and the new crew at Pacific Clinics is an entertaining bunch. Working full time again limits what I can do in terms of projects, but I manage to put a new roof on the old goat pen/the new outside pantry, go visit Quail Springs permaculture farm, and start building a new composter with my 2-year-old nephew, Ollie.

At the end of the month, I have my first birthday at home in many years. Usually I’m at camp. It’s nice. My family threw me a little party and I’m glad to be here, even though I miss my people at Farm & Wilderness.

Yes, Ollie wants to help build the composter!

Rain Event, 29 Palms

With Reanna & ocotillo, on my 42nd birthday.

We just had a big rain in Joshua Tree–over an inch in a short period of time. After a rain like that, within hours, tiny plants start sprouting in what had been bare sand for a year. It may be because I haven’t paid close enough attention, or it may be because different seeds sprout after different kinds of rain events, but these plants are unfamiliar to me. I don’t know what they are called or even if I’ve seen them before.

This is about 4″ tall, the biggest I’ve seen so far.

This grows really fast. It’s about a foot wide.

This is maybe 1.5 inches across and appeared late–maybe a week after the rain.

This is less than an inch tall. It first looked like a miniature succulent, then a miniature cactus. Something is eating them down to a nub at a quick pace. It was one of the first to appear: http://instagram.com/p/dxmcnNF6TW/

This makes a low ground cover over maybe 10 square feet. It’s maybe 3/4 of an inch tall.

This came up late, too. The big ones are about an inch tall so far.

I just noticed this one today. The ring is about 4″ across.

I don’t think this one is a mystery. We call it ragweed and it shoots up anywhere the ground has been disturbed, like roadsides and scraped lots. This plant was about a foot tall but I’ve seen many of them waist-high.

In my 9th grade geography class, Mr. Ferguson had several standard rants he liked to visit on us, like how high school freshmen were not yet fully human. We all had the potential of full humanity, and in a few more years we could achieve it, with work. We were halfway between primordial ooze and human.

Another rant was how we lived on the outskirts of civilization, Los Angeles being civilization. “And you can see,” he’d say,”as you go from LA towards the desert, that the people get less and less hip until you get here, right on the edge.”

At the time I thought he was funny and slightly mean, but probably wrong. I was living in Joshua Tree and going to school in Twentynine Palms. Almost three decades later, I’m back living in Joshua Tree and working as a therapist in Twentynine Palms, and I’m thinking he was probably right. I don’t know about people getting less hip as you leave LA–it’s arguably true, but depends a lot on your values and aesthetics–but look at this map of population density and you will see that I do live on the edge of civilization. (Click on it for a clearer view.) Joshua Tree and Twentynine Palms are the last two splotches of orange (at least 100 people per square mile, no more than 250) heading east out of LA. Just east of us is all fewer than 10 people per square mile for an hour’s drive, then less than 1 person per square mile for another hour. It’s beautiful country, but desolate.

Southern California Population Density 2000

I went to my first Transition Joshua Tree event, a rainharvesting workshop on April 28. It was fun and inspiring to meet with a good-sized group (maybe 20?) of neighbors interested in water sustainability in Joshua Tree. It was nice timing, too. Reanna and I just spent the previous day on the Desert-Wise Landscape Tour, looking at how local people are designing for low-water use.

The main topic was how to catch and store rainwater that falls on your roof. Our presenter, Buck, seemed to have quite a bit of experience installing gutters and catchment tanks, and thinking about water in the desert. He had a machine that made seamless gutters of any length out of strips of aluminum:

gutter maker

And showed us some tanks and filtration systems:

catchment tanks

One of the participants reported catching over 2,000 gallons of water in a four-minute “rain event” with one of these systems. While it is very dry here (less than a half inch in 2013 so far, I believe) it can rain really hard. In my 10 years in the rain country of the Pacific northwest, I never saw it rain half as hard as a big rain in Joshua Tree. So you can wait a long time for a rain event but you want a large storage capacity when it does.

We want to catch as much of the water as possible because we are using up our aquifer about 10 times as fast as it is replenishing. (If it is replenishing, that is–there seems to be some controversy about it.) Water that runs off of our roofs flows down washes to the dry lake in Sunfair, where it mostly evaporates, and eventually rains on someone else downwind of us. According to the conservation representative from the Joshua Basin Water District in attendance, we use 151 gallons per person per day and sustainable use is under 15. She talked a bit about two plans to replenish our aquifer using technology: One, under way right now, is piping in northern California water from the Hisperia aquaduct down into our aquifer. Another, under study, is diverting the Quail Springs wash from the surface (and the dry lake) underground. I’m not sure what that will look like–I picture a 600 foot hole in the middle of the wash, with caution tape around it–but at least it would be using our own water.

Living on less that 15 gallons of water a day looks to be tough. Here’s an essay by my sister-in-law, Maya, about going from 420 gallons per day to 50 gallons a day, with a toddler and while continuing to grow food. I’d like to visit each person who came to the workshop and see what systems result in what level of water usage. Because Reanna and I share a water main with my family, I don’t know how much we are currently using. I will figure it out and write a post about it.

Reanna, my wife and best friend. That I got to see her wake up so groggy and mild this morning in our cute little trailer home, and that she liked my curry stir fry for dinner last night.

Joshua Tree and its sunny, warm late Novembers.

That so much of my family live so close to me, so when Maya takes a walk with Ollie, they will probably come by and see the solar water heater I’m building and borrow some eggs.

That Ollie is starting to say my name, which comes out completely different every time, but you can tell he’s saying “Nathen” because he sticks his tongue way out to make a “th” sound.

That I have so many amazing friends and family to miss on a day like this. I’m thinking about the Alders, Pikes & Plowmans, and all my Not Back to School Camp staffers and campers.

That I have the capacity to be so moved, by all this, by my morning media (Radiolab “Fact of the Matter,” Ashly Miller’s Radicool EP), and to anticipate the company of Lesters and Rizzos this afternoon in Pasadena.

Thank you.

The transition back to Joshua Tree from a wetter climate can be rough. For me, the worst was returning in December 2000 after a year on Maui. It was so cold and dry it felt like I was living on the moon. It took a couple weeks to acclimate.

I just spent 10 weeks traveling and camping for Not Back to School Camp, almost all in wet areas. The last few weeks were in Vermont, with humidity hovering around 99%. The damp started to get to me. And the cold, and the rain. It was really nice in a lot of ways–I love the staff and campers at NBTSC like crazy, and the fall foliage was spectacular when the sun would occasionally break through the clouds–but I was definitely looking forward to my dry, sunny, warm home.

Now that I’m here, I remember that it can take a while before dry, sunny, and warm seems as pleasant as it sounds. My skin feels dry. My lips and mucous membranes feel dry. It’s hard to keep hydrated. The sunlight seems harsh and temperatures I normally call warm, like 85F, feel unpleasantly hot. I’m no longer used to sweating. I notice the dust more, too.

I know I’ll feel better in a few days, and mostly it is just a matter of waiting it out. There are some things that can help, though:

1) Drive or take overland transport of some sort. (Reanna suggests walking to really slow things down.) Flying makes the transition more abrupt and uncomfortable.

2) Use a humidifier for a while, especially at night.

3) Drink more water than is comfortable. Remember that you are exhaling water vapor each time you breathe.

4) Cover up in the sun. Lily-white skin burns quickly

5) Take it easy for a while. Rest it out.

Because it is so dry in Joshua Tree, water is great for cooling off. According to my calculus-free, 200-level physics education, this works because a tiny bit of the heat energy stored in our bodies is used up every time a water molecule evaporates. It’s almost like the water molecule uses our body’s heat to achieve escape velocity, to become a gas. A lot of water evaporating creates a significant cooling. This is how sweating cools us, if we’re lucky enough to be in a dry area.

So when it is hot, which is every day in the summer, we get wet a lot. Inside, we have spray bottles handy so we can spray each other whenever someone starts complaining about the heat.

Above the stove is the handiest place for the spray bottle.

Outside, we often hose each other off. A good drenching keeps us cool even on the hottest days, until we are dry. Granted, that might only be for 15-20 minutes on a really hot day, but comfort is worth taking breaks that often.

If we’ve stored up some heat from a bike ride or forgetting to hose off, we also have a stock tank in the yard for dunking ourselves:

Reanna, cooling off.

The water stays cool even on the hottest days, also because of evaporation, so it is always refreshing to take a dunk. I built the little platform so when we drain the tank, we can water our plants.

12-inch dirt-filled stock-tank platform with screen lid and hose outlet. This photo was taken before I put plank decking on each side of the platform so we don’t get our feet dirty getting in and out.

We also got a “swamp cooler” from our friends Mike and Sarah. It wasn’t big enough to cool their house, but it’s good for our trailer. Reanna sewed a sleeve to funnel the air into our back window, so we didn’t have to cut a big hole in the wall.

Swamp cooler, on home-made platform

Reanna’s sleeve, held to swamper with a drawstring

Sleeve, inside window, held open by a wire frame

It makes a huge difference. A swamp cooler is simple and effective: A pump pulls hot, dry air from outside through wet sponges, creating cool, moist air inside. The physics involved is similar to sweat-cooling, except the heat energy used to turn the water into a gas is drawn from the air itself.

It requires simple enough plumbing that I could handle it myself:

A splitter where our (lead free) hose feeds the trailer, fitted with a compression joint to attach copper tubing. You can kind of see the copper-tube cutter (red) at the bottom of the frame.

Another compression joint, feeding the float valve that lets water in when the level gets low.

Swamper, inside: The float valve (blue) lets water in. The water pump (green) pulls it up and pours it down the three sponges in the left, right and back (removed) walls. The fan (drum at top) pulls the air in through the sponges and pushes it into the trailer. Simple!

The most fun way to use water to cool off, of course, is swimming. My mom got Reanna and me a month’s pass to the pool at the Joshua Tree Retreat Center (AKA Mentalphysics) as a wedding present, and we used that quite a bit. It was awesome. Thanks, Mom!

Reanna at the JT Retreat Center. Note luxuriously empty pool.

Reanna & Rob at the Joshua Tree Inn’s Hacienda Pines pool.

Matt at JT Inn pool.

Backstroke race at the Yucca Valley High School pool, also open to the public in the summer.

Kids in Ken & Katie’s blowup pool.

Joshua Tree is in the Mojave Desert and hot in the summer. The average high is 100 degrees. That’s not Sonora Desert hot, but it’s still hot. My subjective thermometer of summer temperatures is something like this:

70s: Nice. Rare.

80s: Warm. Still nice.

90s: Hot. The sun is hot.

100s: Baking Wall of Heat. The sun is hot, but the air is also hot.

One option for dealing with this is not dealing with it: Stay inside with the swamp cooler on. If I spend most of the day in the office, my moments spent outside feel refreshing, a warm-up.

Another is dressing for it. If you can avoid the sun, say in a hammock under a tree, I advise being as naked as you can get away with. Bare skin is pretty good at keeping cool via sweat evaporation, at least in the dry of the desert. If you can’t avoid the sun, it’s more complicated. Here’s my yard-work costume:

1) Straw hat with a wide brim, loose enough for ventilation, but not loose enough to blow off in a breeze. I think the sun is good for us, but getting sunburned is not. I get sun on my skin every day but avoid burning. The hat helps with that.

2) Polarized sunglasses. I also think unfiltered sunlight is good for our eyes, and I get a fair amount every day, but hours in this kind of intense light makes me feel like I’ve sunburned my retinas.

3) My best white dress shirt. My wife Reanna was appalled at this sacrifice, but this is how I justify it: a) I do way more yard-work than I do dressing up, so it gets more use. b) It fits really well, so it’s comfortable, doesn’t restrict my motion, and doesn’t get tangled in the saw or drill or plant-to-be-pruned. c) It’s bright white, so reflects the sun really well. d) It has long sleeves, so I don’t have to wear sunscreen on my arms, but I can roll them up when appropriate. e) It has a collar which I can turn up to protect my neck. When the sun is low, my hat doesn’t do the trick for my neck. Again, less sunscreen. f) It buttons up, so I can button or unbutton, as needed, for venting. Most often I have only the second-to-top button fastened for maximum venting plus protecting the skin of my upper chest, which received more than its share of sun damage in my youth. g) Once it has some paint and a few tears, neither of us will feel remotely precious about it.

4) White work gloves. Sometimes gloves are not appropriate to the work I’m doing, but when they are, I wear white cloth gloves with rubberized palms and fingers. They save sunscreen and save my delicate musician hands from injury.

4) Shorts to the knee. Protects my thighs from sun while allowing leg-venting. This does leave my calves vulnerable to sun. In the middle of the day they get somewhat shaded by my body. At other times I can often find a shadow to fall on them. If not, sunscreen or sunburn. I find the trade-off worthwhile.

5) White socks. This is the part I’m most conflicted about. I generally eschew socks when I can get away with it, but in this kind of heat my feet can sweat and get stinky and uncomfortable. Plus, socks help make having sand in your shoes less uncomfortable. And they protect your ankles from sunburn.

6) Light, vented shoes. I wear Nike Free 3s, the most comfortable shoe yet created. They do not protect feet from dropped tools or lumber but, cross my fingers, so far it’s worth it.

Here are a couple photos of the costume, taken by Reanna, missing only socks and gloves:

Reanna is from the Pacific northwest and I grew up in Joshua Tree, CA, where we are currently living. We have an ongoing conversation about humidity here because having grown up in a wet climate, she is vigilant for the ways that moisture in the air decomposes things. “If we don’t keep it warm in here, won’t condensation damage the books?” No, it won’t, and probably wouldn’t even if we had a constantly boiling pot of water. The only place I’ve ever seen mildew in Joshua Tree is in one of our bathrooms which, until very recently, had no windows and no fan. This was not aggressive mildew either, just noticeable every once in a while. “If the roof of the trailer has leaks, won’t there be tons of mold in the walls?” No, not likely, because even if rain was pouring right through the trailer, it would be completely dry again within hours.

I have never tracked humidity levels before, so while I knew that Joshua Tree was dry, I didn’t know what level of humidity qualified as dry. I also didn’t fully understand the different measurements of humidity that are floating around out there. The short version of that story is that there are three units of humidity: absolute, specific, and relative humidity. Absolute humidity is grams of water per kilogram of moist air and specific humidity is kilograms of dry air. Relative humidity is more complicated. If I understand correctly (if incompletely) it is the ratio between 1) the pressure that the water vapor in a given amount of air would exert on the insides of a container, should it somehow be trapped there without its accompanying dry air, and 2) the pressure below which water would start condensing out of the air. Relative humidity is the measure of humidity that you usually see in weather reports, partly because it takes into account temperature–at lower temperatures, air holds less water.

Here are some cities with different levels of relative humidity, to give a sense of where we are in Joshua Tree. I’ll also include precipitation. (Data is from Weather Underground unless otherwise noted.)

Seattle, WA, 2011: High 99%, Low 34%, Average 82%, Precipitation 12.92 inches

Honolulu, HI, 2011: High 96%, Low 18%, Average, 65.6% Precipitation 23.82 inches

Joshua Tree humidity, 2011: High = 83%, Low = 10%, Average = 30.7%, Precipitation 1.53 inches

Las Vegas, NV, 2011 (the driest city in the US): High 98%, Low 2%, Average 28.7%, Precipitation about 2.5 inches (precipitation according to climatestations.com)

Kolkata, India one of the most humid cities in the world, on July 15, 2011: High 94%, Low 64%, Average 84%, Precipitation 0.0 inches

And Kartoum, Sudan (Sahara desert), on January 4, 2011: High 43 %, Low 10%, Average 24%, Precipitation .51 inches

Nathen, Reanna, Quilt, Desert

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