---
title: Since satellite measurements began in 1979, the area of Arctic sea i… — The Arctic and Antarctica · tree and pragmatics
description: Since satellite measurements began in 1979, the area of Arctic sea ice at its September low has shrunk by roughly 40 percent, and the Arctic is warming about three to four times faster than the world as a whole: white ice reflects most sunlight back into space, but dark open sea soaks it up, so less
---

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# The Arctic and Antarctica, sentence 16

<!-- .ven lang=en -->
Since satellite measurements began in 1979, the area of Arctic sea ice at its September low has shrunk by roughly 40 percent, and the Arctic is warming about three to four times faster than the world as a whole: white ice reflects most sunlight back into space, but dark open sea soaks it up, so less ice means more warming.

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**Who acts:** satellite measurements, area, Arctic, white ice, dark open sea, less ice · **What happens:** begin, shrink, warm, reflect, soak up, mean · **To what, where:** 1979, most sunlight, Arctic, more warming

<!-- .vabout -->
This is a sentence of the lesson «The Arctic and Antarctica» of the geography course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (satellite measurements, area, Arctic, white ice), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:geography:015-the-arctic-and-antarctica.lesson:16
# text = Since satellite measurements began in 1979, the area of Arctic sea ice at its September low has shrunk by roughly 40 percent, and the Arctic is warming about three to four times faster than the world as a whole: white ice reflects most sunlight back into space, but dark open sea soaks it up, so less ice means more warming.
# source = school lesson (ours)
# course = geography
# lesson = 015-the-arctic-and-antarctica.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×2, R7-rel-agree ×3
1	Since	since	SCONJ	IN	_	4	mark	_	_
2	satellite	satellite	NOUN	NN	Number=Sing	3	compound	_	_
3	measurements	measurement	NOUN	NNS	Number=Plur	4	nsubj	_	_
4	began	begin	VERB	VBD	Mood=Ind|Number=Plur|Person=3|Tense=Past|VerbForm=Fin	19	advcl	_	_
5	in	in	ADP	IN	_	6	case	_	_
6	1979	1979	NUM	CD	NumForm=Digit|NumType=Card	4	obl	_	_
7	,	,	PUNCT	,	_	4	punct	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	area	area	NOUN	NN	Number=Sing	19	nsubj	_	_
10	of	of	ADP	IN	_	13	case	_	_
11	Arctic	arctic	ADJ	JJ	Degree=Pos	13	amod	_	_
12	sea	sea	NOUN	NN	Number=Sing	13	compound	_	_
13	ice	ice	NOUN	NN	Number=Sing	9	nmod	_	_
14	at	at	ADP	IN	_	17	case	_	_
15	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	17	nmod:poss	_	_
16	September	September	PROPN	NNP	Number=Sing	17	compound	_	_
17	low	low	NOUN	NN	Number=Sing	19	obl	_	_
18	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	19	aux	_	_
19	shrunk	shrink	VERB	VBN	Tense=Past|VerbForm=Part	0	root	_	_
20	by	by	ADP	IN	_	23	case	_	_
21	roughly	roughly	ADV	RB	_	22	advmod	_	_
22	40	40	NUM	CD	NumForm=Digit|NumType=Card	23	nummod	_	_
23	percent	percent	NOUN	NN	Number=Sing	19	obl	_	_
24	,	,	PUNCT	,	_	29	punct	_	_
25	and	and	CCONJ	CC	_	29	cc	_	_
26	the	the	DET	DT	Definite=Def|PronType=Art	27	det	_	_
27	Arctic	Arctic	PROPN	NNP	Number=Sing	29	nsubj	_	_
28	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	29	aux	_	_
29	warming	warm	VERB	VBG	VerbForm=Ger	19	conj	_	_
30	about	about	ADP	IN	_	34	case	_	_
31	three	three	NUM	CD	NumForm=Word|NumType=Card	34	nummod	_	_
32	to	to	ADP	IN	_	33	case	_	_
33	four	four	NUM	CD	NumForm=Word|NumType=Card	31	nmod	_	_
34	times	time	NOUN	NNS	Number=Plur	29	obl:unmarked	_	_
35	faster	fast	ADJ	JJR	Degree=Cmp	29	advmod	_	Agree=R5-strong|Haiku=34:amod
36	than	than	ADP	IN	_	38	case	_	_
37	the	the	DET	DT	Definite=Def|PronType=Art	38	det	_	_
38	world	world	NOUN	NN	Number=Sing	35	obl	_	_
39	as	as	ADP	IN	_	41	case	_	Agree=R7-rel-agree|Haiku=41:mark|HaikuPos=SCONJ:IN:_
40	a	a	DET	DT	Definite=Ind|PronType=Art	41	det	_	_
41	whole	whole	ADJ	JJ	Degree=Pos	29	ccomp	_	_
42	:	:	PUNCT	:	_	45	punct	_	_
43	white	white	ADJ	JJ	Degree=Pos	44	amod	_	_
44	ice	ice	NOUN	NN	Number=Sing	45	nsubj	_	_
45	reflects	reflect	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	19	parataxis	_	Agree=R5-strong|Haiku=41:conj
46	most	most	ADJ	JJS	Degree=Sup	47	amod	_	Agree=R7-rel-agree|Haiku=47:advmod|HaikuPos=ADV:RBS:Degree=Sup
47	sunlight	sunlight	NOUN	NN	Number=Sing	45	obj	_	_
48	back	back	ADV	RB	_	47	advmod	_	_
49	into	into	ADP	IN	_	50	case	_	_
50	space	space	NOUN	NN	Number=Sing	48	obl	_	_
51	,	,	PUNCT	,	_	56	punct	_	_
52	but	but	CCONJ	CC	_	56	cc	_	_
53	dark	dark	ADJ	JJ	Degree=Pos	55	amod	_	_
54	open	open	ADJ	JJ	Degree=Pos	55	amod	_	_
55	sea	sea	NOUN	NN	Number=Sing	56	nsubj	_	_
56	soaks	soak	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	45	conj	_	_
57	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	56	obj	_	_
58	up	up	ADP	RP	_	56	compound:prt	_	_
59	,	,	PUNCT	,	_	63	punct	_	_
60	so	so	ADV	RB	_	63	advmod	_	_
61	less	less	ADJ	JJR	Degree=Cmp	62	amod	_	Agree=R7-rel-agree|Haiku=62:advmod|HaikuPos=ADV:RBR:Degree=Cmp
62	ice	ice	NOUN	NN	Number=Sing	63	nsubj	_	_
63	means	mean	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	56	parataxis	_	_
64	more	more	ADJ	JJR	Degree=Cmp	65	amod	_	_
65	warming	warming	NOUN	NN	Number=Sing	63	obj	_	_
66	.	.	PUNCT	.	_	19	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **begin** | past | satellite measurements |  |  | 1979 |  |  | vn begin-55.1-1-1 «NP.eventuality V»: agent=Eventuality |
| 2 | **shrink** | present · perfect | the area of Arctic sea ice |  |  |  |  | by 40 percent; at area's September low | vn flinch-40.5 «NP V PP.stimulus»: agent=Experiencer at low=Stimulus |
| 3 | **warm** | present · progressive | the Arctic |  |  |  | time |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |
| 4 | **reflect** | present | white ice | most sunlight |  |  |  |  | tree rules |
| 5 | **soak up** | present | dark open sea | Arctic |  |  |  |  | vn wipe\_manner-10.4.1 «NP V NP.theme»: agent=Agent it=Theme |
| 6 | **mean** | present | less ice | more warming |  |  |  |  | vn intend-61.2-1 «NP V NP»: agent=Agent warming=Topic |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:geography:015-the-arctic-and-antarctica.lesson:16`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R5-strong ×2, R7-rel-agree ×3. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

<!-- /div -->

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