Research article
|
23 May 2019
Research article |
|
23 May 2019
Evaluating the “2+26” regional strategy for air quality improvement during two air pollution alerts in Beijing: variations in PM2.5 concentrations, source apportionment, and the relative contribution of local emission and regional transport
Ziyue Chen ,Danlu Chen ,Wei Wen ,Yan Zhuang ,Mei-Po Kwan ,Bin Chen ,Bo Zhao ,Lin Yang ,Bingbo Gao ,Ruiyuan Li ,and Bing Xu
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Total article views: 5,349 (including HTML, PDF, and XML)
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PDF
XML
Total
BibTeX
EndNote
3,578
1,684
87
5,349
106
198
HTML: 3,578
PDF: 1,684
XML: 87
Total: 5,349
BibTeX: 106
EndNote: 198
Views and downloads (calculated since 19 Nov 2018)
Month
HTML
PDF
XML
Total
Nov 2018
232
84
4
320
Dec 2018
72
16
0
88
Jan 2019
35
14
0
49
Feb 2019
22
3
0
25
Mar 2019
36
19
0
55
Apr 2019
19
22
1
42
May 2019
202
132
2
336
Jun 2019
108
48
2
158
Jul 2019
53
32
2
87
Aug 2019
32
40
0
72
Sep 2019
26
28
0
54
Oct 2019
36
28
1
65
Nov 2019
19
24
0
43
Dec 2019
20
24
0
44
Jan 2020
31
17
1
49
Feb 2020
30
17
1
48
Mar 2020
12
25
0
37
Apr 2020
31
17
0
48
May 2020
37
13
0
50
Jun 2020
28
22
0
50
Jul 2020
25
22
6
53
Aug 2020
21
15
3
39
Sep 2020
15
11
1
27
Oct 2020
12
26
0
38
Nov 2020
18
17
0
35
Dec 2020
17
12
0
29
Jan 2021
22
15
0
37
Feb 2021
21
11
0
32
Mar 2021
27
16
0
43
Apr 2021
28
16
0
44
May 2021
37
28
1
66
Jun 2021
16
10
0
26
Jul 2021
16
16
0
32
Aug 2021
30
20
0
50
Sep 2021
30
20
0
50
Oct 2021
24
48
0
72
Nov 2021
27
27
0
54
Dec 2021
37
19
1
57
Jan 2022
28
13
0
41
Feb 2022
30
10
2
42
Mar 2022
36
13
0
49
Apr 2022
36
14
0
50
May 2022
43
25
0
68
Jun 2022
31
18
1
50
Jul 2022
41
16
1
58
Aug 2022
37
31
0
68
Sep 2022
56
19
0
75
Oct 2022
33
8
1
42
Nov 2022
51
18
0
69
Dec 2022
44
11
1
56
Jan 2023
45
12
1
58
Feb 2023
63
11
0
74
Mar 2023
105
28
2
135
Apr 2023
44
15
1
60
May 2023
47
13
0
60
Jun 2023
45
18
1
64
Jul 2023
29
8
1
38
Aug 2023
40
22
4
66
Sep 2023
43
13
1
57
Oct 2023
39
15
2
56
Nov 2023
40
6
0
46
Dec 2023
26
7
1
34
Jan 2024
33
13
1
47
Feb 2024
40
18
0
58
Mar 2024
60
26
3
89
Apr 2024
57
22
2
81
May 2024
57
14
2
73
Jun 2024
72
11
1
84
Jul 2024
68
15
0
83
Aug 2024
43
12
2
57
Sep 2024
23
8
0
31
Oct 2024
32
10
0
42
Nov 2024
34
5
1
40
Dec 2024
39
12
2
53
Jan 2025
37
8
7
52
Feb 2025
52
10
0
62
Mar 2025
42
10
1
53
Apr 2025
36
16
2
54
May 2025
45
7
8
60
Jun 2025
63
20
1
84
Jul 2025
33
22
1
56
Aug 2025
35
13
1
49
Sep 2025
54
17
2
73
Oct 2025
35
33
0
68
Nov 2025
50
24
4
78
Dec 2025
2
0
2
Cumulative views and downloads
(calculated since 19 Nov 2018)
Month
HTML views
PDF downloads
XML downloads
Nov 2018
232
84
4
320
Dec 2018
304
100
4
408
Jan 2019
339
114
4
457
Feb 2019
361
117
4
482
Mar 2019
397
136
4
537
Apr 2019
416
158
5
579
May 2019
618
290
7
915
Jun 2019
726
338
9
1,073
Jul 2019
779
370
11
1,160
Aug 2019
811
410
11
1,232
Sep 2019
837
438
11
1,286
Oct 2019
873
466
12
1,351
Nov 2019
892
490
12
1,394
Dec 2019
912
514
12
1,438
Jan 2020
943
531
13
1,487
Feb 2020
973
548
14
1,535
Mar 2020
985
573
14
1,572
Apr 2020
1,016
590
14
1,620
May 2020
1,053
603
14
1,670
Jun 2020
1,081
625
14
1,720
Jul 2020
1,106
647
20
1,773
Aug 2020
1,127
662
23
1,812
Sep 2020
1,142
673
24
1,839
Oct 2020
1,154
699
24
1,877
Nov 2020
1,172
716
24
1,912
Dec 2020
1,189
728
24
1,941
Jan 2021
1,211
743
24
1,978
Feb 2021
1,232
754
24
2,010
Mar 2021
1,259
770
24
2,053
Apr 2021
1,287
786
24
2,097
May 2021
1,324
814
25
2,163
Jun 2021
1,340
824
25
2,189
Jul 2021
1,356
840
25
2,221
Aug 2021
1,386
860
25
2,271
Sep 2021
1,416
880
25
2,321
Oct 2021
1,440
928
25
2,393
Nov 2021
1,467
955
25
2,447
Dec 2021
1,504
974
26
2,504
Jan 2022
1,532
987
26
2,545
Feb 2022
1,562
997
28
2,587
Mar 2022
1,598
1,010
28
2,636
Apr 2022
1,634
1,024
28
2,686
May 2022
1,677
1,049
28
2,754
Jun 2022
1,708
1,067
29
2,804
Jul 2022
1,749
1,083
30
2,862
Aug 2022
1,786
1,114
30
2,930
Sep 2022
1,842
1,133
30
3,005
Oct 2022
1,875
1,141
31
3,047
Nov 2022
1,926
1,159
31
3,116
Dec 2022
1,970
1,170
32
3,172
Jan 2023
2,015
1,182
33
3,230
Feb 2023
2,078
1,193
33
3,304
Mar 2023
2,183
1,221
35
3,439
Apr 2023
2,227
1,236
36
3,499
May 2023
2,274
1,249
36
3,559
Jun 2023
2,319
1,267
37
3,623
Jul 2023
2,348
1,275
38
3,661
Aug 2023
2,388
1,297
42
3,727
Sep 2023
2,431
1,310
43
3,784
Oct 2023
2,470
1,325
45
3,840
Nov 2023
2,510
1,331
45
3,886
Dec 2023
2,536
1,338
46
3,920
Jan 2024
2,569
1,351
47
3,967
Feb 2024
2,609
1,369
47
4,025
Mar 2024
2,669
1,395
50
4,114
Apr 2024
2,726
1,417
52
4,195
May 2024
2,783
1,431
54
4,268
Jun 2024
2,855
1,442
55
4,352
Jul 2024
2,923
1,457
55
4,435
Aug 2024
2,966
1,469
57
4,492
Sep 2024
2,989
1,477
57
4,523
Oct 2024
3,021
1,487
57
4,565
Nov 2024
3,055
1,492
58
4,605
Dec 2024
3,094
1,504
60
4,658
Jan 2025
3,131
1,512
67
4,710
Feb 2025
3,183
1,522
67
4,772
Mar 2025
3,225
1,532
68
4,825
Apr 2025
3,261
1,548
70
4,879
May 2025
3,306
1,555
78
4,939
Jun 2025
3,369
1,575
79
5,023
Jul 2025
3,402
1,597
80
5,079
Aug 2025
3,437
1,610
81
5,128
Sep 2025
3,491
1,627
83
5,201
Oct 2025
3,526
1,660
83
5,269
Nov 2025
3,576
1,684
87
5,347
Dec 2025
3,578
1,684
87
5,349
Total article views: 4,288 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
3,107
1,104
77
4,288
94
186
HTML: 3,107
PDF: 1,104
XML: 77
Total: 4,288
BibTeX: 94
EndNote: 186
Views and downloads (calculated since 23 May 2019)
Month
HTML
PDF
XML
Total
May 2019
186
80
2
268
Jun 2019
106
45
2
153
Jul 2019
50
24
2
76
Aug 2019
29
35
0
64
Sep 2019
25
26
0
51
Oct 2019
34
25
1
60
Nov 2019
19
17
0
36
Dec 2019
20
20
0
40
Jan 2020
29
13
1
43
Feb 2020
29
10
1
40
Mar 2020
12
17
0
29
Apr 2020
31
13
0
44
May 2020
37
5
0
42
Jun 2020
23
9
0
32
Jul 2020
23
11
6
40
Aug 2020
20
10
3
33
Sep 2020
15
8
1
24
Oct 2020
12
24
0
36
Nov 2020
18
14
0
32
Dec 2020
17
9
0
26
Jan 2021
22
5
0
27
Feb 2021
21
5
0
26
Mar 2021
26
9
0
35
Apr 2021
28
13
0
41
May 2021
36
21
0
57
Jun 2021
15
8
0
23
Jul 2021
16
8
0
24
Aug 2021
29
14
0
43
Sep 2021
30
13
0
43
Oct 2021
24
35
0
59
Nov 2021
26
16
0
42
Dec 2021
37
12
1
50
Jan 2022
28
12
0
40
Feb 2022
30
8
2
40
Mar 2022
36
10
0
46
Apr 2022
36
8
0
44
May 2022
43
14
0
57
Jun 2022
31
10
1
42
Jul 2022
41
12
1
54
Aug 2022
37
9
0
46
Sep 2022
56
9
0
65
Oct 2022
32
7
1
40
Nov 2022
51
15
0
66
Dec 2022
43
9
1
53
Jan 2023
45
10
1
56
Feb 2023
63
8
0
71
Mar 2023
104
26
2
132
Apr 2023
44
14
1
59
May 2023
47
10
0
57
Jun 2023
43
16
1
60
Jul 2023
28
7
1
36
Aug 2023
40
16
4
60
Sep 2023
43
6
1
50
Oct 2023
39
13
2
54
Nov 2023
40
6
0
46
Dec 2023
26
6
1
33
Jan 2024
33
9
1
43
Feb 2024
40
15
0
55
Mar 2024
60
23
2
85
Apr 2024
57
16
2
75
May 2024
57
12
2
71
Jun 2024
72
6
1
79
Jul 2024
67
10
0
77
Aug 2024
41
9
2
52
Sep 2024
23
6
0
29
Oct 2024
32
7
0
39
Nov 2024
33
5
1
39
Dec 2024
39
10
2
51
Jan 2025
37
6
6
49
Feb 2025
51
8
0
59
Mar 2025
42
9
1
52
Apr 2025
36
10
2
48
May 2025
45
6
7
58
Jun 2025
63
18
1
82
Jul 2025
33
17
1
51
Aug 2025
35
12
1
48
Sep 2025
54
15
1
70
Oct 2025
35
26
0
61
Nov 2025
49
14
4
67
Dec 2025
2
0
2
Cumulative views and downloads
(calculated since 23 May 2019)
Month
HTML views
PDF downloads
XML downloads
May 2019
186
80
2
Jun 2019
292
125
4
Jul 2019
342
149
6
Aug 2019
371
184
6
Sep 2019
396
210
6
Oct 2019
430
235
7
Nov 2019
449
252
7
Dec 2019
469
272
7
Jan 2020
498
285
8
Feb 2020
527
295
9
Mar 2020
539
312
9
Apr 2020
570
325
9
May 2020
607
330
9
Jun 2020
630
339
9
Jul 2020
653
350
15
Aug 2020
673
360
18
Sep 2020
688
368
19
Oct 2020
700
392
19
Nov 2020
718
406
19
Dec 2020
735
415
19
Jan 2021
757
420
19
Feb 2021
778
425
19
Mar 2021
804
434
19
Apr 2021
832
447
19
May 2021
868
468
19
Jun 2021
883
476
19
Jul 2021
899
484
19
Aug 2021
928
498
19
Sep 2021
958
511
19
Oct 2021
982
546
19
Nov 2021
1,008
562
19
Dec 2021
1,045
574
20
Jan 2022
1,073
586
20
Feb 2022
1,103
594
22
Mar 2022
1,139
604
22
Apr 2022
1,175
612
22
May 2022
1,218
626
22
Jun 2022
1,249
636
23
Jul 2022
1,290
648
24
Aug 2022
1,327
657
24
Sep 2022
1,383
666
24
Oct 2022
1,415
673
25
Nov 2022
1,466
688
25
Dec 2022
1,509
697
26
Jan 2023
1,554
707
27
Feb 2023
1,617
715
27
Mar 2023
1,721
741
29
Apr 2023
1,765
755
30
May 2023
1,812
765
30
Jun 2023
1,855
781
31
Jul 2023
1,883
788
32
Aug 2023
1,923
804
36
Sep 2023
1,966
810
37
Oct 2023
2,005
823
39
Nov 2023
2,045
829
39
Dec 2023
2,071
835
40
Jan 2024
2,104
844
41
Feb 2024
2,144
859
41
Mar 2024
2,204
882
43
Apr 2024
2,261
898
45
May 2024
2,318
910
47
Jun 2024
2,390
916
48
Jul 2024
2,457
926
48
Aug 2024
2,498
935
50
Sep 2024
2,521
941
50
Oct 2024
2,553
948
50
Nov 2024
2,586
953
51
Dec 2024
2,625
963
53
Jan 2025
2,662
969
59
Feb 2025
2,713
977
59
Mar 2025
2,755
986
60
Apr 2025
2,791
996
62
May 2025
2,836
1,002
69
Jun 2025
2,899
1,020
70
Jul 2025
2,932
1,037
71
Aug 2025
2,967
1,049
72
Sep 2025
3,021
1,064
73
Oct 2025
3,056
1,090
73
Nov 2025
3,105
1,104
77
Dec 2025
3,107
1,104
77
Total article views: 1,061 (including HTML, PDF, and XML)
HTML
PDF
XML
Total
BibTeX
EndNote
471
580
10
1,061
12
12
HTML: 471
PDF: 580
XML: 10
Total: 1,061
BibTeX: 12
EndNote: 12
Views and downloads (calculated since 19 Nov 2018)
Month
HTML
PDF
XML
Total
Nov 2018
232
84
4
320
Dec 2018
72
16
0
88
Jan 2019
35
14
0
49
Feb 2019
22
3
0
25
Mar 2019
36
19
0
55
Apr 2019
19
22
1
42
May 2019
16
52
0
68
Jun 2019
2
3
0
5
Jul 2019
3
8
0
11
Aug 2019
3
5
0
8
Sep 2019
1
2
0
3
Oct 2019
2
3
0
5
Nov 2019
7
0
7
Dec 2019
4
0
4
Jan 2020
2
4
0
6
Feb 2020
1
7
0
8
Mar 2020
8
0
8
Apr 2020
4
0
4
May 2020
8
0
8
Jun 2020
5
13
0
18
Jul 2020
2
11
0
13
Aug 2020
1
5
0
6
Sep 2020
3
0
3
Oct 2020
2
0
2
Nov 2020
3
0
3
Dec 2020
3
0
3
Jan 2021
10
0
10
Feb 2021
6
0
6
Mar 2021
1
7
0
8
Apr 2021
3
0
3
May 2021
1
7
1
9
Jun 2021
1
2
0
3
Jul 2021
8
0
8
Aug 2021
1
6
0
7
Sep 2021
7
0
7
Oct 2021
13
0
13
Nov 2021
1
11
0
12
Dec 2021
7
0
7
Jan 2022
1
0
1
Feb 2022
2
0
2
Mar 2022
3
0
3
Apr 2022
6
0
6
May 2022
11
0
11
Jun 2022
8
0
8
Jul 2022
4
0
4
Aug 2022
22
0
22
Sep 2022
10
0
10
Oct 2022
1
1
0
2
Nov 2022
3
0
3
Dec 2022
1
2
0
3
Jan 2023
2
0
2
Feb 2023
3
0
3
Mar 2023
1
2
0
3
Apr 2023
1
0
1
May 2023
3
0
3
Jun 2023
2
2
0
4
Jul 2023
1
1
0
2
Aug 2023
6
0
6
Sep 2023
7
0
7
Oct 2023
2
0
2
Nov 2023
0
Dec 2023
1
0
1
Jan 2024
4
0
4
Feb 2024
3
0
3
Mar 2024
3
1
4
Apr 2024
6
0
6
May 2024
2
0
2
Jun 2024
5
0
5
Jul 2024
1
5
0
6
Aug 2024
2
3
0
5
Sep 2024
2
0
2
Oct 2024
3
0
3
Nov 2024
1
0
1
Dec 2024
2
0
2
Jan 2025
2
1
3
Feb 2025
1
2
0
3
Mar 2025
1
0
1
Apr 2025
6
0
6
May 2025
1
1
2
Jun 2025
2
0
2
Jul 2025
5
0
5
Aug 2025
1
0
1
Sep 2025
2
1
3
Oct 2025
7
0
7
Nov 2025
1
10
0
11
Dec 2025
0
Cumulative views and downloads
(calculated since 19 Nov 2018)
Month
HTML views
PDF downloads
XML downloads
Nov 2018
232
84
4
Dec 2018
304
100
4
Jan 2019
339
114
4
Feb 2019
361
117
4
Mar 2019
397
136
4
Apr 2019
416
158
5
May 2019
432
210
5
Jun 2019
434
213
5
Jul 2019
437
221
5
Aug 2019
440
226
5
Sep 2019
441
228
5
Oct 2019
443
231
5
Nov 2019
443
238
5
Dec 2019
443
242
5
Jan 2020
445
246
5
Feb 2020
446
253
5
Mar 2020
446
261
5
Apr 2020
446
265
5
May 2020
446
273
5
Jun 2020
451
286
5
Jul 2020
453
297
5
Aug 2020
454
302
5
Sep 2020
454
305
5
Oct 2020
454
307
5
Nov 2020
454
310
5
Dec 2020
454
313
5
Jan 2021
454
323
5
Feb 2021
454
329
5
Mar 2021
455
336
5
Apr 2021
455
339
5
May 2021
456
346
6
Jun 2021
457
348
6
Jul 2021
457
356
6
Aug 2021
458
362
6
Sep 2021
458
369
6
Oct 2021
458
382
6
Nov 2021
459
393
6
Dec 2021
459
400
6
Jan 2022
459
401
6
Feb 2022
459
403
6
Mar 2022
459
406
6
Apr 2022
459
412
6
May 2022
459
423
6
Jun 2022
459
431
6
Jul 2022
459
435
6
Aug 2022
459
457
6
Sep 2022
459
467
6
Oct 2022
460
468
6
Nov 2022
460
471
6
Dec 2022
461
473
6
Jan 2023
461
475
6
Feb 2023
461
478
6
Mar 2023
462
480
6
Apr 2023
462
481
6
May 2023
462
484
6
Jun 2023
464
486
6
Jul 2023
465
487
6
Aug 2023
465
493
6
Sep 2023
465
500
6
Oct 2023
465
502
6
Nov 2023
465
502
6
Dec 2023
465
503
6
Jan 2024
465
507
6
Feb 2024
465
510
6
Mar 2024
465
513
7
Apr 2024
465
519
7
May 2024
465
521
7
Jun 2024
465
526
7
Jul 2024
466
531
7
Aug 2024
468
534
7
Sep 2024
468
536
7
Oct 2024
468
539
7
Nov 2024
469
539
7
Dec 2024
469
541
7
Jan 2025
469
543
8
Feb 2025
470
545
8
Mar 2025
470
546
8
Apr 2025
470
552
8
May 2025
470
553
9
Jun 2025
470
555
9
Jul 2025
470
560
9
Aug 2025
470
561
9
Sep 2025
470
563
10
Oct 2025
470
570
10
Nov 2025
471
580
10
Dec 2025
471
580
10
Viewed (geographical distribution)
Total article views: 5,349 (including HTML, PDF, and XML)
Thereof 5,196 with geography defined
and 153 with unknown origin.
Total article views: 4,288 (including HTML, PDF, and XML)
Thereof 4,197 with geography defined
and 91 with unknown origin.
Total article views: 1,061 (including HTML, PDF, and XML)
Thereof 999 with geography defined
and 62 with unknown origin.
Total:
0
HTML:
0
PDF:
0
XML:
0
Total:
0
HTML:
0
PDF:
0
XML:
0
Total:
0
HTML:
0
PDF:
0
XML:
0
Latest update: 02 Dec 2025
