Surface moisture is also my most important concern but Lorelai lives in Northwest Washington.
I can imagine the soil surface
hammered by spring rain into an impenetrable mass :/! Mud. Cold mud - with very little sun . . . too grim, Lorelai?
I'm wondering if lightening the soil texture with something would aid the seedling in emerging into the light. Many gardeners report planting carrot seed directly on the soil surface and then covering with potting soil. The mix of compost, peat and perlite should be a good deal easier to get thru than what I imagine would be Lorelai's native soil.
And then, the benign climate of your NW Wa! summers can allow those little carrots to grow into the mega-tonnage that they are capable . .
I too have found that carrots can really be an important part of my diet for about half the year. Remember that hole with all the carrots I had last fall? I dug into that yesterday and realized that we'd gotten only thru about half of them! Depending on how well they can now keep in the carport fridge, I'll find out if the other 6 months of my diet can include carrots, in healthy portions!
Steve